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december 2008 rev 1 1/36 36 TS4999 filter-free stereo 2.8 w class d audio power amplifier with selectable 3d sound effects features operates from v cc = 2.4 to 5.5 v dedicated standby mode active low/channel output power per channel: 2.8 w at 5 v into 4 with 10% thd+n or 0.7 w at 3.6 v into 8 with 1% thd+n max. selectable 3d sound effect four gain setting steps: 3.5, 6, 9.5 and 12 db low current consumption pssr: 63 db typical at 217 hz. fast start up phase: 7.8 ms short-circuit and thermal shutdown protection flip chip 18-bump lead-free package applications cellular phones pdas notebook pcs description the TS4999 is a stereo fully-differential class d power amplifier. it can drive up to 1.35 w into a 8 load at 5 v per channel. the device has four different gain settings ut ilizing two discrete pins, g0 and g1. pop and click reduction circuitry provides low on/off switch noise while allowing the device to start within 8 ms. 3d enhancement effects are selected through one digital input pin that allows more amazing stereo audio sound. two standby pins (active low) allow each channel to be switched off separately. the TS4999 is available in a flip chip, 18-bump, lead-free package. pin connections (top view) flip chip 18-bump package lout+ lpvcc rout- rpvcc stdbyl g1 rout+ agnd g0 pgnd stdbyr lin+ lin- rin- rin+ 3d avcc lout- lout+ lpvcc rout- rpvcc stdbyl g1 rout+ agnd g0 pgnd stdbyr lin+ lin- rin- rin+ 3d avcc lout- www.st.com
contents TS4999 2/36 contents 1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.1 differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.2 gain settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.3 3d effect enhancement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.4 low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.5 circuit decoupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.6 wakeup (t wu ) and shutdown (t stby ) times . . . . . . . . . . . . . . . . . . . . . . . 26 4.7 consumption in shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.8 single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.9 output filter considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.10 short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.11 thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.1 flip chip package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.2 tape and reel package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
TS4999 absolute maximum ratings 3/36 1 absolute maximum ratings table 1. key parameters and their absolute maximum ratings symbol parameter value unit v cc supply voltage (1) 1. all voltages values are measur ed with respect to the ground pin. 6v v in input voltage (2) 2. the magnitude of input signal must never exceed v cc + 0.3 v / gnd - 0.3 v gnd to v cc v t oper operating free air temperature range -40 to + 85 c t stg storage temperature -65 to +150 c t j maximum junction temperature 150 c r thja thermal resistance junction to ambient (3) 3. device is protected in case of over temper ature by a thermal shutdown active at 150 c. 200 c/w pd power dissipation internally limited (4) 4. exceeding the power derating curves during a l ong period, involves abnorma l operating condition. esd hbm: human body model (5) 5. human body model: 100 pf discharged through a 1.5 k resistor between two pins of the device, done for all couples of pin combinati ons with other pins floating. 2kv esd mm: machine model (6) 6. machine model: a 200 pf capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ), done for all couples of pin combinations with other pins floating. 200 v latch-up latch-up immunity 200 ma v stby standby pin voltage maximum voltage gnd to v cc v lead temperature (soldering, 10 secs) 260 c output short-circuit protection (7) 7. implemented short-circuit protec tion protects the amplifier agains t damage by short- circuit between positive and negative outputs of each channel and between outputs and ground.
absolute maximum ratings TS4999 4/36 note: when the 3d effect is switched on, both channels must be in operation or in shutdown mode at the same time. table 2. operating conditions symbol parameter value unit v cc supply voltage (1) 1. for v cc from 2.4 to 2.5 v, the operating temperature range is reduced to 0 c t amb 70 c 2.4 to 5.5 v v in input voltage range gnd to v cc vstby standby voltage input (2) device on device off 2. without any signal on v stby , the device will be in standby (internal 300 k (+/-20 %) pull down resistor) 1.4 v stby v cc gnd v stby 0.4 (3) 3. minimum current consumption is obtained when v stby = gnd v rl load resistor 4 vih g0, g1, 3d, high level input voltage (4) 4. between g0, g1, 3d pins and gnd, there is an internal 300 k (+/-20 %) pull-down resistor. when pins are floating, the gain is 3.5 db and 3d effect is o ff. in full standby (left and right channels off), these resistors are disc onnected (hiz input). 1.4 v ih v cc v vil g0, g1, 3d, low level input voltage gnd v il 0.4 v r thja thermal resistance junction to ambient (5) 5. with a 4-layer pcb. 90 c/w table 3. 3d effect pin and sta ndby pins setting truth table 3d stbyl stbyr 3d effect left channel right channel 0 0 0 x stdby stdby 001offstdbyon 010offonstdby 011offonon 1 0 0 x stdby stdby 1 0 1 n/a n/a n/a 1 1 0 n/a n/a n/a 1 1 1 on on on
TS4999 application information 5/36 2 application information figure 1. typical application schematic note: see section 4.9: output filter considerations on page 29 . TS4999 left speaker right speaker cin cin left in+ left in- differential left input cin cin right in+ right in- differential right input standby control vcc cs l 1uf cs 0.1uf gain select control cs r 1uf 3d effect control vcc vcc gain select oscillator pwm pwm gain select standby control protection circuit bridge h bridge h lin+ lin- g0 g1 rin+ rin- stbyl stbyr lout+ d4 d6 a5 a7 e5 e7 c7 b4 e3 a3 d2 e1 c5 c3 b2 a1 lout- rout+ rout- rpvcc pgnd agnd avcc 3d effect c1 3d b6 lpvcc table 4. external component description components functional description c s , c sl , c sr supply capacitor that prov ides power supply filtering. c in input coupling capacitors that block the dc voltage at the amplifier input terminal. the capacitors also form a high pass filter with z in (f cl = 1 / (2 x x z in x c in )). note that the value of z in changes with each gain setting. these coupling capacitors are mandatory.
application information TS4999 6/36 note: see table 3 on page 4 . table 5. pin description bump name function a1 lin+ left channel positive differential input b2 lin- left channel negative differential input c1 3d 3d effect digital input pin e1 rin+ right channel positive differential input d2 rin- right channel negative differential input a3 stbyl standby input pin (active low) for left channel output c3 g0 gain select input pin (lsb) e3 stbyr standby input pin (active low) for right channel output b4 agnd analog ground d4 avcc analog supply voltage a5 lout+ left channel negative output c5 g1 gain select input pin (msb) e5 rout+ right channel positive output b6 lpvcc left channel power supply voltage d6 rpvcc right channel power supply voltage a7 lout- left channel negative output c7 pgnd power ground e7 rout- right channel negative output table 6. truth table for output gain settings g1 g0 gain value (db) 0 0 3.5 01 6 10 9.5 11 12 table 7. truth table for 3d effects pin settings 3d 3d effect 0off 1on
TS4999 electrical characteristics 7/36 3 electrical characteristics . table 8. v cc = +5 v, gnd = 0 v, t amb = 25 c (unless otherwise specified) symbol parameter conditions min. typ. max. unit i cc supply current no input signal, no load, both channels 5 7 ma i standby standby current no input signal, vstdby = gnd 1 2 a voo output offset voltage floating inputs, rl = 8 , g = 3.5db, 3d effect off 20 mv po output power thd = 1% max, f = 1khz, r l = 4 2.25 w thd = 1% max, f = 1khz, r l = 8 1.35 thd = 10% max, f = 1khz, r l = 4 2.8 w thd = 10% max, f = 1khz, r l = 8 1.7 w thd+n total harmonic distortion + noise po = 0.9w/ch, g = 6db, f=1khz, r l = 8 0.2 % efficiency efficiency per channel po = 2.3 w rms , r l = 4 +15h 82 % po = 1.4 w rms , r l = 8 + 15h 89 psrr power supply rejection ratio with inputs grounded c in = 1f (1) ,3d effects off f = 217hz, r l = 8 , gain = 6db, vripple = 200mvpp, inputs grounded 65 db crosstalk channel separation f = 1khz, r l = 8 , 3d effects off 100 db cmrr common mode rejection ratio c in =1f, f = 217hz, r l = 8 , gain = 6db, v ic = 200mv pp , 3d effects off 57 db gain gain value with no load g1 = g0 = "0" 3 3.5 4 db g1 = "0" & g0 = "1" 5.5 6 6.5 g1 = "1" & g0 = "0" 9 9.5 10 g1 = g0 = "1" 11.5 12 12.5 z in single-ended input impedance referred to gnd g1 = g0 = 3d = "0" or g1 = "0" & g0 = "1" & 3d = "0" or g1 = "1" & g0 = "0" & 3d = "0" 24 30 36 k g1 = "1" & g0 = "1" & 3d = "0" 12 15 18 k g1 = g0 = "0" & 3d = "1" or g1 = "0" & g0 = "1" & 3d = "1" or g1 = "1" & g0 = "0" & 3d = "1" 13.5 17.1 20.5 k g1 = "1" & g0 = "1" & g3d = "1" 6.5 8.6 10.5 f pwm pulse width modulator base frequency 190 280 370 khz snr signal to noise ratio p o = 1.3w, a-weighting, r l = 8 , gain = 6db, 3d effects off 99 db t wu wake-up time total wake-up time (2) 9 13 16.5 ms
electrical characteristics TS4999 8/36 t stby standby time standby time (2) 11 15.8 20 ms v n output voltage noise f = 20hz to 20khz, a-weighted, gain = 3.5db filterless, 3d effect off, r l = 4 filterless, 3d effect on, r l = 4 with lc output filter, 3d effect off, r l = 4 with lc output filter, 3d effect on, r l = 4 filterless, 3d effect off, r l = 8 filterless, 3d effect on, r l = 8 with lc output filter, 3d effect off, r l = 8 with lc output filter, 3d effect on, r l = 8 31 50 30 48 32 51 31 50 v rms 1. dynamic measurements - 20*log(rms( vout)/rms(vripple)). vr ipple is the super-im posed sinus signal to v cc at f = 217 hz with fixed cin cap (inp ut decoupling capacitor). 2. see section 4.6: wakeup (t wu ) and shutdown (t stby ) times on page 26 . table 8. v cc = +5 v, gnd = 0 v, t amb = 25 c (unless otherwise specified) (continued) symbol parameter conditions min. typ. max. unit
TS4999 electrical characteristics 9/36 . table 9. v cc = +3.6v, gnd = 0v, t amb = 25c (unless otherwise specified) symbol parameter conditions min. typ. max. unit i cc supply current no input signal, no load, both channels 3.5 5.5 ma i standby standby current no input signal, vstdby = gnd 1 2 a voo output offset voltage floating inputs, rl = 8 , g = 3.5db, 3d effect off 20 mv po output power thd = 1% max, f = 1khz, r l = 4 1.15 w thd = 1% max, f = 1khz, r l = 8 0.7 thd = 10% max, f = 1khz, r l = 4 1.45 w thd = 10% max, f = 1khz, r l = 8 0.86 w thd+n total harmonic distortion + noise po = 0.45w/ch, g = 6db, f=1khz, r l = 8 0.15 % efficiency efficiency per channel po = 1.15 w rms , r l = 4 +15h 82 % po = 0.7 w rms , r l = 8 + 15h 89 psrr power supply rejection ratio with inputs grounded c in = 1f (1) ,3d effects off f = 217hz, r l = 8 , gain = 6db, vripple = 200mvpp, inputs grounded 64 db crosstalk channel separation f = 1khz, r l = 8 , 3d effects off 102 db cmrr common mode rejection ratio c in =1f, f = 217hz, r l = 8 , gain = 6db, v ic = 200mv pp , 3d effects off 55 db gain gain value with no load g1 = g0 = "0" 3 3.5 4 db g1 = "0" & g0 = "1" 5.5 6 6.5 g1 = "1" & g0 = "0" 9 9.5 10 g1 = g0 = "1" 11.5 12 12.5 z in single-ended input impedance referred to gnd g1 = g0 = 3d = "0" or g1 = "0" & g0 = "1" & 3d = "0" or g1 = "1" & g0 = "0" & 3d = "0" 24 30 36 k g1 = "1" & g0 = "1" & 3d = "0" 12 15 18 k g1 = g0 = "0" & 3d = "1" or g1 = "0" & g0 = "1" & 3d = "1" or g1 = "1" & g0 = "0" & 3d = "1" 13.5 17.1 20.5 k g1 = "1" & g0 = "1" & g3d = "1" 6.5 8.6 10.5 k f pwm pulse width modulator base frequency 190 280 370 khz snr signal to noise ratio p o = 0.67w, a-weighting, r l = 8 , gain = 6db, 3d effects off 97 db t wu wake-up time total wake-up time (2) 7.5 11.3 15 ms
electrical characteristics TS4999 10/36 t stby standby time standby time (2) 10 13.8 18 ms v n output voltage noise f = 20hz to 20khz, a-weighted, gain = 3.5db filterless, 3d effect off, r l = 4 filterless, 3d effect on, r l = 4 with lc output filter, 3d effect off, r l = 4 with lc output filter, 3d effect on, r l = 4 filterless, 3d effect off, r l = 8 filterless, 3d effect on, r l = 8 with lc output filter, 3d effect off, r l = 8 with lc output filter, 3d effect on, r l = 8 29 49 28 48 29 50 29 50 v rms 1. dynamic measurements - 20*log(rms( vout)/rms(vripple)). vr ipple is the super-im posed sinus signal to v cc at f = 217 hz with fixed cin cap (inp ut decoupling capacitor). 2. see section 4.6: wakeup (t wu ) and shutdown (t stby ) times on page 26 . table 9. v cc = +3.6v, gnd = 0v, t amb = 25c (unless otherwise specified) (continued) symbol parameter conditions min. typ. max. unit
TS4999 electrical characteristics 11/36 table 10. v cc = +2.5 v, gnd = 0v, t amb = 25 c (unless otherwise specified) symbol parameter conditions min. typ. max. unit i cc supply current no input signal, no load, both channels 2.8 4 ma i standby standby current no input signal, vstdby = gnd 1 2 a voo output offset voltage floating inputs, rl = 8 , g = 3.5db, 3d effect off 20 mv po output power thd = 1% max, f = 1khz, r l = 4 0.53 w thd = 1% max, f = 1khz, r l = 8 0.33 thd = 10% max, f = 1khz, r l = 4 0.67 w thd = 10% max, f = 1khz, r l = 8 0.4 w thd+n total harmonic distortion + noise po = 0.2w/ch, g = 6db, f=1khz, r l = 8 0.07 % efficiency efficiency per channel po = 0.52 w rms , r l = 4 +15h 81 % po = 0.33 w rms , r l = 8 + 15h 88 psrr power supply rejection ratio with inputs grounded c in = 1f (1) ,3d effects off f = 217hz, r l = 8 , gain = 6db, vripple = 200mvpp, inputs grounded 63 db crosstalk channel separation f = 1khz, r l = 8 , 3d effects off 104 db cmrr common mode rejection ratio c in =1f, f = 217hz, r l = 8 , gain = 6db, v ic = 200mv pp , 3d effects off 55 db gain gain value with no load g1 = g0 = "0" 3 3.5 4 db g1 = "0" & g0 = "1" 5.5 6 6.5 g1 = "1" & g0 = "0" 9 9.5 10 g1 = g0 = "1" 11.5 12 12.5 z in single-ended input impedance referred to gnd g1 = g0 = 3d = "0" or g1 = "0" & g0 = "1" & 3d = "0" or g1 = "1" & g0 = "0" & 3d = "0" 24 30 36 k g1 = "1" & g0 = "1" & 3d = "0" 12 15 18 k g1 = g0 = "0" & 3d = "1" or g1 = "0" & g0 = "1" & 3d = "1" or g1 = "1" & g0 = "0" & 3d = "1" 13.5 17.1 20.5 k g1 = "1" & g0 = "1" & g3d = "1" 6.5 8.6 10.5 k f pwm pulse width modulator base frequency 190 280 370 khz snr signal to noise ratio p o = 0.3w, a-weighting, r l = 8 , gain = 6db, 3d effects off 94 db t wu wake-up time total wake-up time (2) 37.812ms
electrical characteristics TS4999 12/36 t stby standby time standby time (2) 81216ms v n output voltage noise f = 20hz to 20khz, a-weighted, gain = 3.5db filterless, 3d effect off, r l = 4 filterless, 3d effect on, r l = 4 with lc output filter, 3d effect off, r l = 4 with lc output filter, 3d effect on, r l = 4 filterless, 3d effect off, r l = 8 filterless, 3d effect on, r l = 8 with lc output filter, 3d effect off, r l = 8 with lc output filter, 3d effect on, r l = 8 28 47 27 45 28 48 28 47 v rms 1. dynamic measurements - 20*log(rms( vout)/rms(vripple)). vr ipple is the super-im posed sinus signal to v cc at f = 217 hz with fixed cin cap (inp ut decoupling capacitor). 2. see section 4.6: wakeup (t wu ) and shutdown (t stby ) times on page 26 . table 10. v cc = +2.5 v, gnd = 0v, t amb = 25 c (unless otherwise specified) (continued) symbol parameter conditions min. typ. max. unit
TS4999 electrical characteristics 13/36 3.1 electrical characteristic curves the graphs shown in this section use the following abbreviations. r l + 15 h or 30 h = pure resistor + very low series resistance inductor. filter = lc output filter (1 f+ 30 h for 4 and 0.5 f+15 h for 8 ). all measurements are done with c sl = c sr =1 f and c s = 100 nf (see figure 2 ), except for the psrr where c sl , c sr is removed (see figure 3 ). figure 2. measurement test diagram vcc cin cin cs l 1/2 TS4999 cs 100nf in+ in- 15 h or 30 h ? or lc filter out+ out- 1 f 4 or 8 rl 5th order 50khz low-pass filter audio measurement bandwith < 30khz gn d gn d gn d (csr)
electrical characteristics TS4999 14/36 figure 3. psrr measurement test diagram vcc cin cin 1/2 TS4999 cs 100nf in+ in- 15 h or 30 h ? or lc filter out+ out- 4 or 8 rl 5th order 50khz low-pass filter rms se l e ctiv e me as u re me n t b an d wi t h =1 % of fm ea s gn d gn d gn d 1 f 1 f gn d 5th order 50khz low-pass filter reference 20hz to 20khz vripple vcc
TS4999 electrical characteristics 15/36 figure 4. current consumption vs. power supply voltage figure 5. current consumption vs. standby voltage (one channel) 012345 0 1 2 3 4 5 6 one channel active no load tamb = 25 c current consumption (ma) power supply voltage (v) both channels active 012345 0 1 2 3 vcc=2.5v vcc=3.6v one channel active current consumption (ma) standby voltage (v) no load tamb = 25 c vcc=5v figure 6. standby current consumption vs. power supply voltage figure 7. efficiency vs. output power (one channel) 012345 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 standby current ( a) power supply voltage (v) no load v stbyl = v stbyr = gnd tamb = 25 c 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 0 20 40 60 80 100 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 power dissipation vcc = 5v rl = 4 + 15 h f = 1khz thd+n 10% effi c i ency ( % ) output power (w) efficiency dissipated power (w) figure 8. efficiency vs. output power (one channel) figure 9. efficiency vs. output power (one channel) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 power dissipation vcc = 3.6v rl = 4 + 15 h f = 1khz thd+n 10% efficiency (%) output power (w) efficiency dissipated power (w) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 20 40 60 80 100 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24 power dissipation vcc = 2.5v rl = 4 + 15 h f = 1khz thd+n 10% efficiency (%) output power (w) efficiency dissipated power (w)
electrical characteristics TS4999 16/36 figure 10. efficiency vs. output power (one channel) figure 11. efficiency vs. output power (one channel) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0 20 40 60 80 100 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24 0.26 0.28 0.30 power dissipation vcc = 5v rl = 8 + 15 h f = 1khz thd+n 10% efficiency (%) output power (w) efficiency dissipated power (w) 0.00.10.20.30.40.50.60.70.80.9 0 20 40 60 80 100 0.00 0.05 0.10 0.15 power dissipation vcc = 3.6v rl = 8 + 15 h f = 1khz thd+n 10% efficiency (%) output power (w) efficiency dissipated power (w) figure 12. efficiency vs. output power (one channel) figure 13. thd+n vs. output power 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 20 40 60 80 100 0.00 0.02 0.04 0.06 0.08 power dissipation vcc = 2.5v rl = 8 + 15 h f = 1khz thd+n 10% efficiency (%) output power (w) efficiency dissipated power (w) 0.01 0.1 1 0.1 1 10 vcc=2.5v vcc=3.6v f = 1khz rl = 4 + 15 h g = +6db bw < 30khz tamb = 25 c thd + n (%) output power (w) vcc=5v figure 14. thd+n vs. output power figure 15. thd+n vs. output power 0.01 0.1 1 0.1 1 10 vcc=2.5v vcc=3.6v f = 1khz rl = 4 + 30 h g = +6db bw < 30khz tamb = 25 c thd + n (%) output power (w) vcc=5v 0.01 0.1 1 0.1 1 10 vcc=2.5v vcc=3.6v f = 1khz rl = 8 + 15 h g = +6db bw < 30khz tamb = 25 c thd + n (%) output power (w) vcc=5v
TS4999 electrical characteristics 17/36 v figure 16. thd+n vs. output power figure 17. thd+n vs. frequency 0.01 0.1 1 0.1 1 10 vcc=2.5v vcc=3.6v f = 1khz rl = 8 + 30 h g = +6db bw < 30khz tamb = 25 c thd + n (%) output power (w) vcc=5v 100 1000 10000 0.01 0.1 1 10 po=750mw po=1500mw thd + n (%) frequency (hz) vcc = 5v rl = 4 + 15 h g = +6db bw < 30khz tamb = 25 c 20 figure 18. thd+n vs. frequency figure 19. thd+n vs. frequency 100 1000 10000 0.01 0.1 1 10 po=400mw po=800mw thd + n (%) frequency (hz) vcc = 3.6v rl = 4 + 15 h g = +6db bw < 30khz tamb = 25 c 20 100 1000 10000 0.01 0.1 1 10 po=200mw po=400mw thd + n (%) frequency (hz) vcc = 2.5v rl = 4 + 15 h g = +6db bw < 30khz tamb = 25 c 20 figure 20. thd+n vs. frequency figure 21. thd+n vs. frequency 100 1000 10000 0.01 0.1 1 10 po=750mw po=1500mw thd + n (%) frequency (hz) vcc = 5v rl = 4 + 30 h g = +6db bw < 30khz tamb = 25 c 20 100 1000 10000 0.01 0.1 1 10 po=400mw po=800mw thd + n (%) frequency (hz) vcc = 3.6v rl = 4 + 30 h g = +6db bw < 30khz tamb = 25 c 20
electrical characteristics TS4999 18/36 figure 22. thd+n vs. frequency figure 23. thd+n vs. frequency 100 1000 10000 0.01 0.1 1 10 po=750mw po=1500mw thd + n (%) frequency (hz) vcc = 5v rl = 4 + 30 h g = +6db bw < 30khz tamb = 25 c 20 100 1000 10000 0.01 0.1 1 10 po=450mw po=900mw thd + n (%) frequency (hz) vcc = 5v rl = 8 + 15 h g = +6db bw < 30khz tamb = 25 c 20 figure 24. thd+n vs. frequency figure 25. thd+n vs. frequency 100 1000 10000 0.01 0.1 1 10 po=225mw po=450mw thd + n (%) frequency (hz) vcc = 3.6v rl = 8 + 15 h g = +6db bw < 30khz tamb = 25 c 20 100 1000 10000 0.01 0.1 1 10 po=100mw po=200mw thd + n (%) frequency (hz) vcc = 2.5v rl = 8 + 15 h g = +6db bw < 30khz tamb = 25 c 20 figure 26. thd+n vs. frequency figure 27. thd+n vs. frequency 100 1000 10000 0.01 0.1 1 10 po=450mw po=900mw thd + n (%) frequency (hz) vcc = 5v rl = 8 + 30 h g = +6db bw < 30khz tamb = 25 c 20 100 1000 10000 0.01 0.1 1 10 po=225mw po=450mw thd + n (%) frequency (hz) vcc = 3.6v rl = 8 + 30 h g = +6db bw < 30khz tamb = 25 c 20
TS4999 electrical characteristics 19/36 figure 28. thd+n vs. frequency figure 29. output power vs. power supply voltage 100 1000 10000 0.01 0.1 1 10 po=100mw po=200mw thd + n (%) frequency (hz) vcc = 2.5v rl = 8 + 30 h g = +6db bw < 30khz tamb = 25 c 20 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 rl=8 + 15 h rl=4 + 15 h f = 1khz bw < 30khz tamb = 25 c output power at 1% thd + n (w) supply voltage (v) figure 30. output power vs. power supply voltage figure 31. crosstalk vs. frequency (3d effect off) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 rl=8 + 15 h rl=4 + 15 h f = 1khz bw < 30khz tamb = 25 c output power at 10% thd + n (w) supply voltage (v) 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=500mw po=1500mw po=1000mw crosstalk level (db) frequency (hz) vcc = 5v rl = 4 + 15 h g = +6db cin = 1 f tamb = 25 c po=1800mw 20 figure 32. crosstalk vs. frequency (3d effect off) figure 33. crosstalk vs. frequency (3d effect off) 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=250mw po=750mw po=500mw crosstalk level (db) frequency (hz) vcc = 3.6v rl = 4 + 15 h g = +6db cin = 1 f tamb = 25 c po=900mw 20 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=125mw po=325mw po=250mw crosstalk level (db) frequency (hz) vcc = 2.5v rl = 4 + 15 h g = +6db cin = 1 f tamb = 25 c po=450mw 20
electrical characteristics TS4999 20/36 figure 34. crosstalk vs. frequency (3d effect off) figure 35. crosstalk vs. frequency (3d effect off) 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=600mw po=900mw po=300mw crosstalk level (db) frequency (hz) vcc = 5v rl = 8 + 15 h g = +6db cin = 1 f tamb = 25 c po=1100mw 20 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=160mw po=500mw po=320mw crosstalk level (db) frequency (hz) vcc = 3.6v rl = 8 + 15 h g = +6db cin = 1 f tamb = 25 c po=600mw 20 figure 36. crosstalk vs. frequency (3d effect off) figure 37. gain vs. frequency (3d effect off) 100 1000 10000 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 po=75mw po=225mw po=150mw crosstalk level (db) frequency (hz) vcc = 2.5v rl = 8 + 15 h g = +6db cin = 1 f tamb = 25 c po=270mw 20 100 1k 10k 0 1 2 3 4 5 rl=4 +30 h rl=4 +15 h rl=8 +30 h rl=8 +15 h no load gain = 3.5db vin = 400mvrms cin = 10 f tamb = 25 c gain (db) frequency (hz) 20 20k figure 38. gain vs. frequency (3d effect off) figure 39. gain vs. frequency (3d effect off) 100 1k 10k 2 3 4 5 6 7 8 rl=4 +30 h rl=4 +15 h rl=8 +30 h rl=8 +15 h no load gain = 6db vin = 300mvrms cin = 10 f tamb = 25 c gain (db) frequency (hz) 20 20k 100 1k 10k 5 6 7 8 9 10 11 12 rl=4 +30 h rl=4 +15 h rl=8 +30 h rl=8 +15 h no load gain = 9.5db vin = 200mvrms cin = 10 f tamb = 25 c gain (db) frequency (hz) 20 20k
TS4999 electrical characteristics 21/36 figure 40. gain vs. frequency (3d effect off) figure 41. psrr vs. frequency (3d effect off) 100 1k 10k 8 9 10 11 12 13 14 rl=4 +30 h rl=4 +15 h rl=8 +30 h rl=8 +15 h no load gain = 12db vin = 150mvrms cin = 10 f tamb = 25 c gain (db) frequency (hz) 20 20k 100 1000 10000 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 5v, 3d effect off vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 figure 42. psrr vs. frequency (3d effect off) figure 43. psrr vs. frequency (3d effect off) 100 1000 10000 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 3.6v, 3d effect off vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 100 1000 10000 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 2.5v, 3d effect off vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 figure 44. psrr vs. frequency (3d effect on) figure 45. psrr vs. frequency (3d effect on) 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 5v, 3d effect on vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 3.6v, 3d effect on vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20
electrical characteristics TS4999 22/36 figure 46. psrr vs. frequency (3d effect on) figure 47. cmrr vs. frequency (3d effect off) 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db psrr (db) frequency (hz) inputs grounded vcc = 2.5v, 3d effect on vripple = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 5v, 3d effect off vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 figure 48. cmrr vs. frequency (3d effect off) figure 49. cmrr vs. frequency (3d effect off) 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 3.6v, 3d effect off vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 2.5v, 3d effect off vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 figure 50. cmrr vs. frequency (3d effect on) figure 51. cmrr vs. frequency (3d effect on) 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 5v, 3d effect on vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 3.6v, 3d effect on vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20
TS4999 electrical characteristics 23/36 figure 52. cmrr vs. frequency (3d effect on) figure 53. power derating curves 100 1000 10000 -80 -70 -60 -50 -40 -30 -20 -10 0 g=+6db cmrr(db) frequency (hz) vcc = 2.5v, 3d effect on vic = 200mvpp cin = 10 f rl = 8 + 15 h tamb = 25 c g=+9.5db g=+12db g=+3.5db 20 0 255075100125150 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 with a 4-layer pcb flip-chip package power dissipation (w) ambiant temperature ( c) no heat sink amr value figure 54. startup and shutdown phase v cc = 5 v, g= 6 db, c in =1f, v in =2v pp , f= 500 hz figure 55. startup and shutdown phase v cc =5v, g=6db, c in = 1 f, inputs grounded out+ - out- standby out+ out- out+ out- standby out+ - out-
application information TS4999 24/36 4 application information 4.1 differential configuration principle the TS4999 is a monolithic fully-d ifferential input/output class d stereo power amplifier. the TS4999 also features 3d effect enhancement t hat can be switched on or off by one digital pin. additionally, since the load is connec ted differentially compared to a single-ended topology, the output is four times higher for the same power supply voltage. a fully-differential amplifier of fers the following advantages. a high psrr (power supply rejection ratio). a high common mode noise rejection. virtually zero pop with no additional circuitry, giving a faster start-up time compared to conventional single-ended input amplifiers. easier interfacing with differential output audio dacs. 4.2 gain settings in the flat region of the frequency-response curve (no input coupling capacitor or internal feedback loop + load effect), the differential gain can be set to 3.5, 6, 9.5 or 12 db, depending on the logic level of the g0 and g1 pins, as shown in ta bl e 1 1 . note: between pins g0, g1 and gnd there is an internal 300 k (+/-20%) resistor. when the pins are floating, the gain is 6 db. in full standby (left and right channels off), these resistors are disconnected (hiz input). 4.3 3d effect enhancement the TS4999 features 3d audio effects which can be switched off and switched on through input pin 3d when used as a digital interface. the relation between the logic level of this pin and the on/off 3d effect is shown in table 3 on page 4 and table 7 on page 6 . the 3d audio effect evokes the perception of spatial hearing of stereo audio signals and improves this effect in cases where the stereo speakers are too close to each other, such as in small or portable devices. the perceived amount of 3d effect also depends on many factors such as speaker position, distance between speakers, listener/frequency spectrum of the audio signal, as well as the difference of signal between the left and right channel. table 11. gain settings with g0 and g1 pins g1 g0 gain (db) gain (v/v) 003.51.5 0162 109.53 11124
TS4999 application information 25/36 in some cases, the speaker volume can increase when the 3d effect is switched on. this factor is dependent on the composition and frequency spectrum of listened stereo audio signal. note: 1 when the 3d effect is switched on, both channels must be in operation or shutdown mode at the same time. 2 between pin 3d and gnd there is an internal 300 k (+/-20%) resistor. when the pin is floating, the 3d effect is off. in full standby (left and right channels off), this resistor is disconnected (hiz input). 4.4 low frequency response if a low frequency bandwidth limitation is require d, input coupling capacitors can be used. in the low frequency region, the input coupling capacitor c in starts to have an effect. c in forms, with the input impedance z in , a first order high-pass filter with a -3 db cut-off frequency. so, for a desired cut-off frequency f cl , c in is calculated as follows: with f cl in hz, z in in and c in in f. the input impedance z in is for the whole power supply voltage range and changes with the gain setting. there is also a tolerance around the typical values (see ta b l e 8 , ta b l e 9 and ta bl e 1 0 . figure 56. cut-off frequency vs. input capacitor f cl 1 2 z in c in ?? ? -------------------------------------------- = c in 1 2 z in f cl ?? ? --------------------------------------------- - = 0.1 1 1 10 100 g=3.5db, 6db, 9.5db 3d on, zin=17.1k typ. g=3.5db, 6db, 9.5db 3d off, zin=30k typ. g=12db, 3d on zin=8.6k typ. g=12db, 3d off zin=15k typ. tamb=25 c low -3db cut off frequency (hz) input capacitor cin ( f)
application information TS4999 26/36 4.5 circuit decoupling power supply capacitors, referred to as c s , c sl and c sr , are needed to correctly bypass the TS4999. the TS4999 has a typical switching frequency of 280 khz and an output fall and rise time of approximately 5 ns. due to these very fast transients, careful decoupling is mandatory. a 1 f ceramic capacitor between each pvcc and pgnd (c sl , c sr ) and one additional ceramic capacitor between avcc and agnd 0.1 f (c s ) are sufficient, but they must be located as close as possible to the TS4999 in order to avoid any extra parasitic inductance or resistance created by a long track wire. parasitic loop inductance, in relation to di/dt, introduces overvoltage that decreases the global efficiency of the device and may cause, if this parasitic inductance is too high, the device to break down. in addition, even if a ceramic capacitor has an adequate high frequency esr (equivalent series resistance) valu e, its current capability is also im portant. a 0603 size is a good compromise, particularly when a 4 load is used. another important parameter is the rated voltage of the capacitor. a 1 f/6.3 v capacitor used at 5 v, loses about 50% of its value. with a power supply voltage of 5 v, the decoupling value, instead of 1 f, could be reduced to 0.5 f. as c s has particular influence on the thd+n in the medium-to-high frequency region , this capacitor variation becomes decisive. in addition, less decoupling means higher overshoots which can be problematic if they reach the power supply amr value (6 v). 4.6 wakeup (t wu ) and shutdown (t stby ) times during the wake-up sequence, there is a delay when the standby is released to switch the device on. the wake-up sequence of the TS4999 consists of two phases. during the first phase t wu-a , a digitally-generated delay, mutes the outputs. then, the gain increasing- phase t wu-a begins. the gain increases smoothly from the mute state to the preset gain selected by the digital pins g0 and g1. this startup sequence avoid any pop noise during startup of the amplifier. see figure 57: wake-up phase
TS4999 application information 27/36 figure 57. wake-up phase when the standby command is set, the time required to set the output stage to high impedance and to put the internal circuitry in shutdown mode is called the standby time. this time is used to decrease the gain from it s nominal value set by the digital pins g0 and g1 to mute and avoid any pop noise during shutdown. the gain decreases smoothly until the outputs are muted. see figure 58: shutdown phase . figure 58. shutdown phase preset gain gain increasing t wu-a t wu t wu-b stby mute time time gain stby level stby lo hi mute preset gain t stby stby time time gain stby level gain decreasing lo hi mute stby mute
application information TS4999 28/36 4.7 consumption in shutdown mode between the shutdown pin and gnd there is an internal 300 k (+-/20%) resistor. this resistor forces the TS4999 to be in shutdown mode when the shutdown input is left floating. however, this resistor also introduces add itional shutdown power consumption if the shutdown pin voltage is not at 0 v. with a 0.4 v shutdown voltage pin for example, you must add 0.4 v/300 k = 1.3 a typical (0.4 v/240 k = 1.66 a in maximum) for each shutdown pin to the standby current specified in ta bl e 8 , ta bl e 9 and ta b l e 1 0 . of course, this current will be provided by the external control device for standby pins. 4.8 single-ended input configuration it is possible to use the TS4999 in a single-ended input configuration. input coupling capacitors are also mandatory in this configuration. the schematic diagram in figure 59 shows a typical single-ended input application. figure 59. typical single-ended input application TS4999 left speaker right speaker cin cin left input cin cin right input standby control vcc cs l 1uf cs 0.1uf gain select control cs r 1uf 3d effect control vcc vcc gain select oscillator pwm pwm gain select standby control protection circuit bridge h bridge h lin+ lin- g0 g1 rin+ rin- stbyl stbyr lout+ d4 d6 a5 a7 e5 e7 c7 b4 e3 a3 d2 e1 c5 c3 b2 a1 lout- rout+ rout- rpvcc pgnd agnd avcc 3d effect c1 3d b6 lpvcc
TS4999 application information 29/36 4.9 output filter considerations the TS4999 is designed to operate without an output filter. however, due to very sharp transients on the TS4999 output, emi-radiated emissions may cause some standard compliance issues. these emi standard compliance issues can appear if the distance between the TS4999 outputs and loudspeaker terminal are long (typically more than 50 mm, or 100 mm in both directions, to the speaker terminals). because the pcb layout and internal equipment device are different for each configuration, it is difficult to provide a one-size-fits-all solution. however, to decrease the prob ability of emi issues, there are several simple rules to follow. reduce, as much as possible, the distance between the TS4999 output pins and the speaker terminals. use a ground plane for "shielding" sensitive wires. place, as close as possible to the TS4999 and in series with each output, a ferrite bead with a rated current of at least 2.5 a and impedance greater than 50- at frequencies above 30 mhz. if, after testing, these ferrite beads are not necessary, replace them by a short-circuit. allow extra footprint to place, if necessary, a capacitor to short perturbations to ground (see figure 60 ). figure 60. ferrite chip bead placement in the case where the distance between the TS4999 output and the speaker terminals is too long, it is possible to encounter low frequency emi issues due to the fact that the typical operating pwm frequency is 280 khz and that the fall and rise time of the output signal is less than or equal to 5 ns. in this configuration, it is necessary to use the output filter represented in figure 61 on page 30 , which consists of l1, c1, l2 and c2 being placed as close as possible to the TS4999 outputs. in particular cases where the outp ut filter is used and there is the possibility to disconnect a load, we recommended using an rc network that consists of c3 and r, as shown in figure 61 . in this case, when the output filter is connected without any load, the filter acts as a short-circuit for frequencies above 10 khz in the output frequency spectrum of the amplifier. the rc network corrects the frequency response of the output filter and compensates this limitation. to speaker about 100pf gnd ferrite chip bead from output
application information TS4999 30/36 figure 61. lc output filter with rc network 4.10 short-circuit protection the TS4999 includes an output short-circuit protection. this protection prevents the device from being damaged when faults occur on the amplifier outputs. when a channel is in operating mode and a short-circuit occurs between two outputs of the channel or between an output and ground, the short-circuit protection detects this situation and puts the appropriate channel into standby mode. to put the channel back into operating mode, it is necessary to put the channel?s standby pin to logical lo and then back to logical hi and wake-up the channel. 4.11 thermal shutdown the TS4999 device has an internal thermal shutdown protection mechanism to protect the device from overheating in the event of extreme temperatures. the thermal shutdown mechanism is activated when the device reaches 150 c. when the temperature decreases to safe levels (around 135 c), the circuit switches back to normal operation. table 12. example of component selection component r l = 4 r l = 8 l1 15 h / 1.4a 30 h / 0.7a l2 15 h / 1.4a 30 h / 0.7a c1 2 f / 10v 1 f / 10v c2 2 f / 10v 1 f / 10v c3 1 f / 10v 1 f / 10v r22 / 0.25w 47 / 0.25w from ts2007 l lc output filter l1 c1 l2 c3 r c2 r out+ out- rc network
TS4999 package mechanical data 31/36 5 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack? packages, depending on their level of environmental compliance. ecopack? specifications, grade definitions and product status are available at: www.st.com. ecopack? is an st trademark. 5.1 flip chip package figure 62. flip chip package 866 m 866 m 500 m 750 m 2420 m 2280 m 600 m 40 m* 866 m 866 m 500 m 750 m 2420 m 2280 m 600 m 40 m* die size: 2.42x2.28 mm 100m die height (including bumps): 600m bumps diameter: 315m 50m bump diameter before reflow: 300m 10m bumps height: 250m 40m die height: 350m 20m pitch: 500m 50m coplanarity: 50m max optional*: back coating height: 40m
package mechanical data TS4999 32/36 figure 63. pinout (top view) figure 64. marking (top view) 1 5 4 3 2 7 6 ae d c b lout+ lpvcc rout- rpvcc stdbyl g1 rout+ agnd g0 pgnd stdbyr lin+ lin- rin- rin+ 3d avcc lout- st logo symbol for lead-free: e two first product code: k9 third x: assembly line plant code three digits date code: y for year - ww for week the dot is for marking pin a1 k9 x yww e k9 x yww e
TS4999 package mechanical data 33/36 5.2 tape and reel package figure 65. schematic (top view) figure 66. recommended footprint data user direction of feed 8 die size x + 70m die size y + 70m 4 1.5 4 all dimensions are in mm a 1 1 a user direction of feed 8 die size x + 70m die size y + 70m 4 1.5 4 all dimensions are in mm a 1 1 1 1 a
ordering information TS4999 34/36 6 ordering information table 13. order codes part number temperature range package packing marking TS4999eijt -40c to +85c flip chip 18 tape & reel k9
TS4999 revision history 35/36 7 revision history table 14. document revision history date revision changes 18-dec-2008 1 initial release.
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