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STA540
4 x 13 W dual/quad power amplifier
Features
!
High output power capability - 2x 38 W into 4 at 18 V, 1 kHz, 10%THD - 2x 34 W into 8 at 22 V, 1 kHz, 10%THD - 2x 24 W into 4 at 14.4 V, 1 kHz, 10%THD - 2x 15 W into 8 at 16 V, 1 kHz, 10%THD - 4x 13 W into 2 at 15 V, 1 kHz, 10%THD - 4x 11 W into 4 at 18 V, 1 kHz, 10%THD - 4x 7 W into 4 at 14.4 V, 1 kHz, 10%THD Minimum external components count: - no bootstrap capacitors - no Boucherot cells - internally fixed gain 20 dB Standby function (CMOS compatible) No audible pop during standby operations Diagnostic facilities: - clip detector - output to GND short-circuit detector - output to VS short-circuit detector - soft short-circuit check at turn-on - thermal shutdown warning Multiwatt15
!
! ! !
Description
The STA540 is a 4-channel, class AB audio amplifier designed for high quality sound applications. The amplifiers have single-ended outputs with integrated short-circuit protection, thermal protection and diagnostic functions. The chip is housed in the 15-pin Multiwatt ECOPACK(R) Pb-free package which is RoHS (2002/95/EC) compliant.
Protection
! ! ! ! !
Output AC/DC short circuit Soft short-circuit check at turn-on Thermal cutoff/limiter to prevent chip from overheating High inductive loads ESD Device summary
Temperature range -40 to 150 C
Table 1.
Order code STA540
Package Multiwatt15 Tube
Packing
January 2008
Rev 4
1/23
www.st.com 1
Contents
STA540
Contents
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 1.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 2.2 2.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 4 5
Standard application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Thermal information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Heatsink specification examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1.1 5.1.2 5.1.3 Rth_HS calculation for 4 single-ended channels . . . . . . . . . . . . . . . . . . . 13 Rth_HS calculation for 2 single-ended channels plus 1 BTL channel . . . 13 Calculations using music power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6
Practical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1 6.2 6.3 6.4 6.5 6.6 Highly flexible amplifier configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Easy single-ended to bridge transition . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Internally fixed gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Silent turn on/off and muting/standby function . . . . . . . . . . . . . . . . . . . . . 15 Driving circuit for standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.6.1 6.6.2 Rail-to-rail output voltage swing without bootstrap capacitors . . . . . . . . 16 Absolute stability without external compensation . . . . . . . . . . . . . . . . . 16
6.7
Built-in protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.7.1 6.7.2 6.7.3 6.7.4 Diagnostic facilities (pin 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Clipping detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/23
STA540
Contents
6.8 6.9 6.10
Handling the diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 PCB ground layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Mute function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3/23
Block diagram and pin description
STA540
1
1.1
Block diagram and pin description
Block diagram
Figure 1. Block diagram
VCC2 VCC2
13
VCC1 VCC1
3 A1 + 1 OUT1
IN1
4 A2 INV +
ST-BY ST-BY IN2
7
2
-
OUT2
5 A3 + 12 A4 INV + 11 6 SVR 8 P-GND 10 9 S-GND
D06AU1630
15
OUT3
IN3
14
OUT4 DIAGNOSTIC DIAGNOSTICD OUTPUT
IN4
4/23
STA540
Block diagram and pin description
1.2
Pin description
Figure 2. Pin connection (top view)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
OUT3 OUT3 OUT4 OUT4 VCC2 VCC IN3 IN3 IN4 IN4 DIAGNOSTICD DIAGNOSTICD S-GND S-GND P-GND PW-GND ST-BY STAND-BY SVR SVR IN2 IN2 IN1 IN1 VCC1 VCC OUT2 OUT2 OUT1 OUT1
D06au1631
Table 2.
N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Pin description
Name OUT1 OUT2 VCC1 IN1 IN2 SVR ST-BY P-GND S-GND DIAGNOSTICD IN4 IN3 VCC2 OUT4 OUT3 Type OUT OUT PWR IN IN IN IN PWR PWR OUT IN IN PWR OUT OUT Channel 1 output Channel 2 output Power supply Channel 1 input Channel 2 input Supply voltage rejection Standby control pin Power ground Signal ground Diagnostics output Channel 4 input Channel 3 input Power supply Channel 4 output Channel 3 output Function
5/23
Electrical specifications
STA540
2
2.1
Electrical specifications
Absolute maximum ratings
Table 3.
Symbol
Absolute maximum ratings
Parameter Supply voltage idle mode (no signal) Value 24 22 20 36 -40 to150 0 to 70 Unit V V V W C C
Vs
Supply voltage operating Supply voltage AC-DC short safe
Ptot Tstg, Tj Top
Total power dissipation (Tcase = 85 C) Storage and junction temperature Operating temperature
2.2
Thermal data
Table 4.
Symbol
Thermal data
Parameter Value 1.8 35 Unit C/W C/W
Rth j-case Thermal resistance junction to case (max) Rth j-amb Thermal resistance junction to ambient (max)
2.3
Electrical characteristics
The test conditions are VS = 14.4 V, RL = 4 , f = 1 kHz, Tamb = 25 C unless otherwise specified. Table 5.
Symbol VS Id Vos
Electrical characteristics
Parameter Supply voltage range Total quiescent drain current Output offset voltage Output power, SE THD=10%, RL=4 THD=10%, RL=2 THD=10%, RL=4 , VS=22 V THD=10%, RL=4 THD=10%, RL=8 , VS=17 V THD=10%, RL=8 , VS=22 V RL = 4 , Po = 0.1 to 4 W 4.0 -150 6.5 7 11.5 16 24 20 34 0.02 Test condition Min 8 80 Typ Max 22 150 150 Unit V mA mV W
Po Output power, BTL THD ISC Total harmonic distortion Short-circuit output current
21
W % A
6/23
STA540 Table 5.
Symbol
Electrical specifications Electrical characteristics (continued)
Parameter Test condition f = 1 kHz single-ended f = 10 kHz single-ended f = 1 kHz BTL f = 10 kHz BTL Single-ended BTL Single-ended BTL Min Typ 70 60 55 60 20 10 19 25 30 15 20 26 21 27 0.5 Rgen = 0, "A" weighted, S.E.: Non-inverting channels Inverting channels BTL Rgen = 0, f = 22 Hz to 22 kHz SVR ASB ISB Supply voltage rejection Standby attenuation Current consumption in standby Pin ST-BY voltage for play VST-BY Pin ST-BY voltage for standby Pin ST-BY current Clipping detector output average current Clipping detector output average current Play mode, VST-BY = 5 V Max driving current under fault d = 1% (*) d = 5% (*) IDIAGNOSTICD = 1 mA sinking 140 150 160 90 160 0.7 3.5 50 5 Rgen = 0, f = 300 Hz, CSVR = 470 F Po = 1 W VST_BY = 0 to 1.5 V 50 80 90 100 1.5 2 5 3.5 k dB dB V V V dB dB A V V A mA A A V C C C Max Unit
CT
Crosstalk
dB
Rin Gv Gv
Input impedance Voltage gain Voltage gain match
EN
Input noise voltage
IST-BY Icd_off Icd_on
VDIAGNO Saturation voltage on pin DIAGNOSTICD STICD TW TM TS Thermal warning Thermal muting Thermal shutdown
7/23
Standard application circuits
STA540
3
Standard application circuits
Figure 3.
ST_BY
10 F 100 nF
Quadraphonic
10 k
VS
1000 F
IN_1
220 nF
47 5 220 nF
13
3
1 2200 F
OUT_1 OUT_2 OUT_3 OUT_4
IN_2 IN_3
220 nF
STA540
12
2 2200 F 15
Suggested applications: 4x 13 W into 2 , at 15 V 4x 11 W into 4 , at 18 V 4x 9 W into 2 , at 12 V 4x 8 W into 4 , at 16 V 4x 5 W into 4 , at 12 V
IN_4
220 nF
11 68 47 F 9 14 10
2200 F
2200 F
Figure 4.
Alternative single-ended speaker connection
*
1
18 15
2
19 14
470F
470F
The best audio performance is obtained with the configuration where each speaker has its own DC blocking capacitor. However, if the application allows a little degradation of the spatial image it is possible to connect a couple of speakers with only one low-value DC blocking capacitor.
Figure 5.
ST_BY
Dual bridge
10 k
VS
10 F 100 nF 1000 F
IN_L
470 nF
47 5
13
3
1
OUT_L
Suggested applications: 2x 38 W into 4 , at 18 V, 1 kHz, 10% THD 2x 34 W into 8 , at 22 V, 1 kHz, 10% THD 2x 24 W into 4 , at 14.4 V, 1 kHz, 10% THD 2x 15 W into 8 , at 16 V, 1 kHz, 10% THD
IN_R
470 nF
STA540
12 15 11 68 47 F 9 14 10
2
OUT_R
8/23
STA540 Figure 6. Stereo plus bridge drive
10 k
Standard application circuits
ST_BY
10 F 100 nF
VS
1000 F
IN_L
220 nF
47 5 220 nF
13
3
1 2200 F
OUT_L OUT_R
IN_R IN_Bridge
470 nF
STA540
12
2 2200 F 15
11 68 47 F 9 14 10
OUT_Bridge
Suggested applications: 2x 9 W into 2 , +1x 18 W into 4 , at 12 V 2x 12 W into 2 , +1x 26 W into 4 , at 14.4 V 2x 8 W into 4 , +1x 16 W into 8 , at 16 V
9/23
Electrical characteristics curves
STA540
4
Figure 7.
Electrical characteristics curves
Quiescent drain current versus supply voltage (single-ended and bridge) Figure 8. Quiescent output voltage versus supply voltage (single-ended and bridge)
Figure 9.
20 18 16 14 12 10 8 6 4 2 0 Po (W)
Output power versus supply voltage Figure 10. Output power versus supply voltage
12 11 10 9 8 7 6 5 4 3 2 1 0 Po (W)
THD= 10 % SINGLE ENDED RL= 2 f= 1 KHz
SINGLE ENDED RL= 4 f= 1 KHz
THD= 10 %
THD= 1 %
THD= 1 %
8
9
10
11
12
13 14 Vs (V)
15
16
17
18
8
9
10
11
12
13 14 Vs (V)
15
16
17
18
Figure 11. Output power versus supply voltage Figure 12. Distortion versus output power
10/23
STA540
Electrical characteristics curves
Figure 13. Distortion versus output power
Figure 14. Distortion versus output power
Figure 15. Output power versus supply voltage Figure 16. Output power versus supply voltage
12 Po(W ) 11 10 9 8 7 6 5 4 3 2 1 0 +8 +10 +12 +14 +16 Vs(V) +18 +20 +22 +24 T.H.D=1% T.H.D=10% S.E. Rl=8ohm f=1KHz
Po(W) 35 32.5 30 27.5 25 22.5 20 17.5 15 12.5 10 7.5 5 2.5 0 +8 +10 +12 +14 Vs(V) +16 +18 +20 +22 T.H.D=1% T.H.D=10% BTL Rl=8ohm f=1KHz
Figure 17. Supply voltage rejection versus frequency
Figure 18. Crosstalk versus frequency
11/23
Electrical characteristics curves
STA540
Figure 19. Standby attenuation versus threshold voltage
Figure 20. Total power dissipation and efficiency versus output power
Figure 21. Total power dissipation and efficiency versus output power
12/23
STA540
Thermal information
5
Thermal information
In order to avoid the intervention of the thermal protection, placed at Tj =150 C for thermal muting and Tj=160 C for thermal shutdown, it is important to calculate the heatsink thermal resistance, Rth_HS, correctly. The parameters that influence the calculation are:
" " "
maximum dissipated power for the device (Pdmax) maximum thermal resistance junction to case (Rth_j-case) maximum ambient temperature Tamb_max
There is also an additional term that depends on the Iq (quiescent current).
5.1
5.1.1
Heatsink specification examples
Rth_HS calculation for 4 single-ended channels
Given VS = 14.4 V, RL = 4 x 4 channels, Rth_j-case = 1.8 C/W, Tamb_max = 50 C and Pout = 4 x 7 W then the maximum power dissipated in the device is: V CC P dmax = NChannel ------------------ = 4 2.62 = 10.5W 2 2 R L and the required thermal resistance of the heatsink is: 150 - T amb_max R th_HS = ----------------------------------------- - R th_j-case = 150 - 50 - 1.8 = 7.7C/W --------------------10.5 P dmax
2
5.1.2
Rth_HS calculation for 2 single-ended channels plus 1 BTL channel
Given VS = 14.4 V, RL = 2x 2 (SE) + 1x 4 (BTL), Pout = 2 x 12 W + 1 x 26 W then the maximum power dissipated in the device is: V CC 2V CC P dmax = 2 ------------------ + ----------------- = 2 5.25 + 10.5 = 21W 2 2 2 R L R L and the required thermal resistance of the heatsink is: 150 - T amb_max R th_HS = ----------------------------------------- - R th_j-case = 150 - 50 - 1.8 = 3C/W --------------------21 P dmax
2 2
13/23
Thermal information
STA540
5.1.3
Calculations using music power
The thermal resistance value calculated in each of the two above examples specifies a heatsink capable of sustaining the maximum dissipated power. Realistically, however, and as explained in the Application Note (AN1965), the heatsink can be smaller when the application is musical content. When music power is considered the resulting dissipation is about 40% less than the calculated maximum. Thus, smaller or cheaper heatsinks can be employed. The heatsink thermal resistance values are modified as follows: for example 5.1.1: 10.5 W - 40% = 6.3 W, thus giving Rth_c-amb = 14 C/W, for example 5.1.2: 21 W - 40% = 12.6 W, thus giving Rth_c-amb = 6 C/W.
14/23
STA540
Practical information
6
6.1
Practical information
Highly flexible amplifier configuration
The availability of four independent channels makes it possible to accomplish several kinds of applications ranging from four speakers stereo (F/R) to two-speaker bridge solutions. When working with single-ended configurations, the polarity of the speakers driven by the inverting amplifier must be reversed with respect to those driven by non-inverting channels. This is to avoid phase irregularities causing sound alterations especially during the reproduction of low frequencies.
6.2
Easy single-ended to bridge transition
The change from single-ended to bridge configuration is made simple by connecting the two inputs together and also the speaker directly between the two outputs (no need for additional external components, in fact the output DC blocking capacitors are eliminated). However, take care to use an inverting/non-inverting amplifier pair.
6.3
Internally fixed gain
The advantages in internally fixing the gain (to 20 dB in single-ended configuration and to 26 dB in bridge configuration) are:
" "
components and space saving, output noise, supply voltage rejection and distortion optimization.
6.4
Silent turn on/off and muting/standby function
The standby mode can be easily activated by means of a CMOS logic level applied to pin ST-BY through a RC filter. Under standby conditions, the device is turned off completely (supply current = 1 mA typical, output attenuation = 80 dB minimum). All on/off operations are virtually pop-free. Furthermore, at turn-on the device stays in mute condition for a time determined by the value of the SVR capacitor. This prevents transients, coming from previous stages, from producing unpleasant acoustic effects at the speakers.
6.5
Driving circuit for standby mode
Some precautions need to be taken when designing the driving circuit for pin 7, ST-BY. For instance, the pin cannot be directly driven by a voltage source having a current capability higher than 5 mA. In practical cases a series resistance must be inserted, giving it the double purpose of limiting the current at pin 7 and to smooth down the standby on/off transitions. And, when done in combination with a capacitor, prevents output pop. A capacitor of at least 100 nF from pin 7 to S-GND, with no resistance in between, is necessary to ensure correct turn-on.
15/23
Practical information
STA540
6.6
Output stage
The fully complementary output stage is possible with the power ICV PNP component. This novel design is based on the connection shown in Figure 22 and allows the full exploitation of its capabilities. The clear advantages this new approach has over classical output stages are described in the following sections.
6.6.1
Rail-to-rail output voltage swing without bootstrap capacitors
The output swing is limited only by the VCEsat of the output transistors, which are in the range of 0.3 (Rsat) each. Classical solutions adopting composite PNP-NPN for the upper output stage have higher saturation loss on the top side of the waveform. This unbalanced saturation causes a significant power reduction. The only way to recover power includes of the addition of expensive bootstrap capacitors.
6.6.2
Absolute stability without external compensation
With reference to the circuit shown in Figure 22, the low frequency gain Vout/Vin is greater than unity, that is, approximately 1 + R2/R1. The DC output level (VCC / 2) is fixed by an auxiliary amplifier common to all the channels. By controlling the amount of this local feedback it is possible to force the loop gain (A*) to less than unity at frequency where the phase shift is 180. This means that the output buffer is intrinsically stable and not prone to oscillation. The above feature has been achieved even though there is very low closed-loop gain of the amplifier. This contrasts with the classical PNP-NPN stage which makes use of external RC networks, namely the Boucherot cells, for reducing the gain at high frequencies. Figure 22. The new output stage
16/23
STA540
Practical information
6.7
6.7.1
Built-in protection
Diagnostic facilities (pin 10)
The STA540 is equipped with diagnostic circuitry that is able to detect the following events:
" " "
clipping of the output signal, thermal shutdown, output fault: - - - short circuit to GND, short circuit to VS, soft short circuit at turn-on.
The event is signalled when the open collector output of pin 10 begins to sink current.
6.7.2
Short-circuit protection
Reliable and safe operation in the presence of all kinds of output short circuit is assured by the built-in protection. As well as the AC/DC short circuit to GND and to VS, and across the speaker, there is a soft short-circuit condition, which is signalled on pin 10 (DIAGNOSTICD) during the turn-on phase, to verify output circuit integrity in order to ensure correct amplifier operation. This particular kind of protection acts in such a way as to prevent the device being turned on (via pin ST-BY) when a resistive path (that is a DC path) less than 16 exists between the output and GND. This would avoid loud speaker damage should, for example, the output coupling capacitor develop an internal short circuit. As mentioned previously, it is important to limit the external current driving pin ST-BY to 5 mA. The reason is that the associated circuitry is normally disabled with currents greater than 5 mA. The soft short-circuit protection is particularly attractive when, in the single-ended configuration, one capacitor is shared between two outputs (see Figure 23). Figure 23. Shared capacitor in single-ended configuration
17/23
Practical information
STA540
6.7.3
Clipping detection
Figure 24. Clipping detection waveforms
Current sinking at pin 10 occurs when a certain distortion level is reached at each output. This function initiates a gain-compression facility whenever the amplifier is overdriven.
6.7.4
Thermal shutdown
With the thermal shutdown feature, the diagnostics output (pin 10) signals the closeness of the junction temperature to the shutdown threshold. Typically, current sinking at pin 10 starts approximately 10 C before the shutdown temperature is reached. Figure 25. Output fault waveforms (see Figure 26)
Figure 26. Fault waveforms
ST-BY PIN VOLTAGE 2V t OUT TO Vs SHORT OUTPUT WAVEFORM SOFT SHORT t OUT TO GND SHORT
Vpin 10
CORRECT TURN-ON FAULT DETECTION t CHECK AT TURN-ON (TEST PHASE)
D05AU1603mod
SHORT TO GND OR TO Vs
18/23
STA540
Practical information
6.8
Handling the diagnostic information
As different diagnostic information (clipping detection, output fault, approaching thermal shutdown) becomes available at pin 10 so the behavior of the signal at this pin changes. In order to discriminate the event, signal DIAGNOSTICD, pin 10, must be interpreted correctly. Figure 27 shows a combination of events on the output waveform and the corresponding output on pin 10. This events could be diagnosed based on the timing of the output signal on pin 10. For example, the clip-detector signalling under fault conditions could produce a low level for a short time. On the other hand, an output short circuit would probably produce a low level for a much longer time. With these assumptions, an interface circuit based on the one shown in Figure 28 could differentiate the information and flag the appropriate circuits. Figure 27. Waveforms
ST-BY PIN VOLTAGE
t
Vs OUTPUT WAVEFORM t
Vpin 10 WAVEFORM t CLIPPING
D05AU1604mod
SHORT TO GND OR TO Vs
THERMAL PROXIMITY
Figure 28. Interface circuit diagram
19/23
Practical information
STA540
6.9
PCB ground layout
The device has two distinct ground pins, P-GND (power ground) and S-GND (signal ground) which are disconnected from each other at chip level. For superior performance the pins P-GND and S-GND must be connected together on the PCB by low-resistance tracks. For the PCB-ground configuration, a star-like arrangement, where the center is represented by the supply-filtering electrolytic capacitor ground, is recommended. In an arrangement such as this, at least two separate paths must be provided, one for P-GND and one for S-GND. The correct ground assignments are as follows:
"
on S-GND: - - - standby capacitor (pin 7, or any other standby driving networks), SVR capacitor (pin 6), to be placed as close as possible to the device, input signal ground (from active/passive signal processor stages) power supply filtering capacitors for pins 3 and 13. The negative terminal of the electrolytic capacitor(s) must be directly tied to the battery negative line and this should represent the starting point for all the ground paths.
"
on P-GND: -
6.10
Mute function
If the mute function is desired, it can be implemented on pin 6, SVR, as shown in Figure 29. Figure 29. Optional mute function circuit
10K ST-BY 10F 0.22F 7 13 3 100nF VS 1000F
IN L
4
1 2200F
OUT L
IN R
0.22F
5
2 2200F
OUT R
IN BRIDGE MUTE 5V 0 PLAY R2 10K R1 3.3K
0.47F
12 11
15 OUT BRIDGE 9 10 14
470F
6
8
DIAGNOSTICS
D06AU1632
VS = 10 to 16 V, mute off: VSVR 0.6 to 0.8 V, mute on: VSVR 0.2 V
Using a different value for R1 than the suggested 3.3 k, results in two different situations:
"
R1 > 3.3 k: - - pop noise improvement, lower mute attenuation; pop noise degradation, higher mute attenuation.
"
R1 < 3.3 k: - -
20/23
STA540
Package information
7
Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 30. Mechanical data and package dimensions (Multiwatt15)
DIM. A5 B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.73 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.43 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.186 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.87 1.27 17.78 1 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.214 0.102 0.102 0.152 0.050 0.700 2.65 1.6 0.039 0.022 0.030 0.060 0.710 mm MIN. TYP. MAX. MIN. inch TYP. MAX. 0.197 0.104 0.063
OUTLINE AND MECHANICAL DATA
Multiwatt15 (Vertical)
0016036 J
21/23
Revision history
STA540
8
Revision history
Table 6.
Date 21-Jan-2008
Document revision history
Revision 4 Changes Updated power specifications on pages 1, 6 and 8 Updated short-circuit output current in Table 5 Updated description on page 1 Updated pin naming, numbering in all relevant figures Minor non-technical edits Minor non-technical edits Initial release
Oct-2007 Sep-2006 May-2006
3 2 1
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STA540
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