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TDA7469
LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER
1

FEATURES
2 STEREO INPUT 1 STEREO OUTPUT TREBLE BOOST BASS CONTROL BASS AUTOMATIC LEVEL CONTROL VOLUME CONTROL IN 1dB STEPS MUTE STAND-BY FUNCTION SOFTWARE CONTROLLED ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS
Figure 1. Package
SSOP24
Table 1. Order Codes
Part Number TDA7469 TDA746913TR Package SSOP24 Tape & Reel
2
DESCRIPTION
The TDA7469 is a volume tone (bass and treble) processor for quality audio applications in Low voltage supply portable systems. Bass ALC (Automatic Level Control) function can be adjusted by a dedicated pin. The control of all the functions is accomplished by serial bus. Figure 2. Block Diagram
The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and DC stepping are obtained.
5.6K 3.3nF 68nF 68nF
0.47F IN1-R 25K
MUX_R
TREBLE-R
BASSI-R
BASSO-R
gm +6dB / 0dB VOLUME TREBLE RB 16 or 32 BASS x1 220F PGND-R PVS-R OUT-R
25K 0.47F IN2-R 25K
+6dB / -63dB SUPPLY BASS_ALC CONTROL
25K
0.47F
ALC
HALF_WAVE RECTIFIER
I2C BUS DECODER + LATCHES
SCL SDA
IN1-L 0.47F 25K +6dB / -63dB x1 VOLUME 25K +6dB / 0dB gm TREBLE BASS 16 or 32 RB VREF SUPPLY VS SUPPLY PVS-L PGND-L 25K 0.47F IN2-L 220F OUT-L
25K
D00AU1234
MUX_L 3.3nF
TREBLE-L
BASSI-L 68nF 68nF 5.6K
BASSO-L
GND
CREF
22F
December 2004
REV. 3 1/13
TDA7469
Table 2. ABSOLUTE MAXIMUM RATINGS
Symbol VS Tamb Tstg ESD Operating Supply Voltage Operating Ambient Temperature Storage Temperature Range Maximum ESD on PINS 11 and 12 (HBM) Parameter Value 5.5 0 to 70 -55 to 150 500 Unit V C C V
Figure 3. PIN CONNECTIONS (Top view)
VS IN1-L IN2-L MUX-L TREBLE-L BASSI-L BASSO-L PGND-L OUT-L PVS-L SDA SCL
1 2 3 4 5 6 7 8 9 10 11 12
D01AU1246
24 23 22 21 20 19 18 17 16 15 14 13
CREF IN1-R IN2-R MUX-R TREBLE-R BASSI-R BASSO-R PGND-R OUT-R PVS-R ALC GND
Table 3. THERMAL DATA
Symbol Rth j-pin Parameter Thermal Resistance Junction-pins Value 85 Unit C/W
Table 4. QUICK REFERENCE DATA
Symbol VS Vps Pomax THD Supply Voltage Power Supply Voltage Maximum output power THD 10% Total Harmonic Distortion V = 0.1Vrms f = 1KHz Volume Control (1dB step) Treble Control Bass Control Mute Attenuation -63 0 0 90 Parameter Min. 1.8 1.5 5 Typ. 2.4 2.4 10 0.1 0.5 6 12 14 Max. 5.0 5.0 Unit V V mW % dB dB dB dB
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Table 5. ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb = 25C, VS =2.4V, all controls flat (G = 0dB), f = 1KHz, unless otherwise specified)
Symbol SUPPLY VS VPS ISQ IPSQ IS IPS INPUT STAGE RIN AIN CRANGE AMAX ASTEP GMAX Gstep R1 Gb RB Gt Rt Gout Pomax ENO Input Resistance Input Attenuation Range Control Range Max. Attenuation Step Resolution Max. Gain Step Resolution Muxout Load Resistence Control Range Internal Feedback Resistance Control Range Internal Resistance Output Gain Max Output Power Output Noise THD = 10% All gains = 0dB Output Muted BW = 20Hz to 20KHz flat Av = 0, Vin = 0.1Vrms VS, f = 100Hz PVS, f = 100Hz 5 Max. Boost Max. Boost/on 75.6 35 0 -63 61 0.5 63 1 6 2 10 14 100.8 12 25 0 10 126 50 65 6 6 65 1.5 K dB dB dB dB dB dB K dB K dB K dB mW Supply Voltage Supply Voltage Supply Current pin 1 Quiescent Current pin10 + pin15 All circuit stop Headphone Amp. OFF Po = 0.5mW +0.5mW Po = 0.5mW +0.5mW 1.8 1.5 2.4 2.4 40 1 8 15 5.0 5.0 100 10 V V A A mA mA Parameter Test Condition Min. Typ. Max. Unit
VOLUME CONTROL
BASS CONTROL
TREBLE CONTROL
HEADPHONE OUTPUTS
GENERAL 5 10 0.1 50 -70 -75 0 1 0.5 1.9 VIN = 0.4V IO = 1.6mA -5 5 0.4 0.5 V V % dB dB dB dB V V A V
THD SC RR1 RR2
Distortion Channel Separation Left/Right Ripple Rejection Ripple Rejection Total Tracking Error
BUS INPUTS VIL VIH IIN VO Input Low Voltage Input High Voltage Input Current Output Voltage (ACK)
Note: 1. BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
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TDA7469
3
DATA BYTES
Address = (HEX) 10001000 3.1 FUNCTION SELECTION: The first byte (subaddress) Table 6.
MSB D7 X X X X X X X X X X X X D6 D5 X X X X X X D4 B B B B B B D3 0 0 0 0 0 0 D2 0 0 0 0 1 1 D1 0 0 1 1 0 0 LSB D0 0 1 0 1 0 1 SUBADDRESS VOLUME TREBLE & BASS INPUT & MUTE STAND-BY & OTHERS BASS ALC1 BASS ALC2
B = 1 incremental bus; active B = 0 no incremental bus ;X = indifferent 0,1
Table 7. VOLUME
MSB D7 D6 D5 D4 D3 D2 D1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 LSB D0 0 1 0 1 VOLUME GAIN 6 4 2 0 1 dB STEPS 0 -1 -2 -3 -4 -5 -6 -7 8 dB STEPS 0 -8 -16 -24 -32 -40 -48 -56
VOLUME : +6 x -63dB
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Table 8. TREBLE & BASS
MSB D7 D6 D5 D4 D3 D2 D1 0 0 1 1 0 0 0 0 1 1 1 1 0 1 1 0 1 0 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 LSB D0 TREBLE 0 1 0 1 12dB 8dB 4dB 0dB BASS 14dB 12dB 10dB 8dB 6dB 4dB 2dB 0dB BASS ALC ALC: VOLUME mode ALC: BASS mode ALC: fc shift ALC: fc nonshift ALC: feedback gain x2 ALC: feedback gain x 1
Table 9. INPUT SELECT & MUTE
MSB D7 D6 D5 D4 D3 D2 D1 0 0 1 1 LSB D0 0 1 0 1 INPUT SELECT IN1 (0dB) IN1 (-6dB) IN2 (0dB) IN2 (-6dbB) MUTE 1 0 1 0 1 0 Input Mute ON Input Mute OFF Output SoftMute ON Output SoftMute OFF Output Mute ON Output Mute OFF HEADPHONE AMP. ST-BY 1 0 Headphone Amp. OFF Headphone Amp. ON
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TDA7469
Table 10. STAND_BY & OTHERS
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 1 0 1 0 1 0 0 0 0 STAND-BY ALL Circuits Stop ALL Circuits Work SOFT MUTE CAPACITOR Independent Capacitor Share ALC Capacitor REFERENCE LEVEL adaptive: (VDD-0.7)/2 1.10V 0.85V 0.55V 0.45V ZEROCROSS MODE ON OFF Zerocross Detect Point: Volume Zerocross Detect Point: Bass CREF STAND-BY CREF Circuit Stop CREF Circuit Work
0 0 1 1 1 0 1 0 1 0
0 1 0 1
Table 11. BASS ALC1
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 1 0 1 0 1 0 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 BASS ALC ALC MODE ON OFF DETECTOR ON OFF RELEASE CURRENT CIRCUIT ON OFF ATTACK TIME RESISTOR 12.5K 25K 50K 100K THRESHOLD THRESHOLD1 THRESHOLD2 THRESHOLD3 THRESHOLD4
Table 12. BASS ALC2
MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 1 0 1 0 BASS ALC ALC FULL FEEDBACK CURR. ON OFF BIG RELEASE CURRENT ON OFF
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Figure 4. Typical Application Circuit (SSO24)
VS C1 10F
VS C2 0.1F C3 0.47F
1
24
CREF C22 22F IN1-R C21 0.47F IN1-R C20 0.47F IN2-R MUX-R
IN1-L C4 0.47F IN2-L MUX-L
IN1-L
2
23
IN2-L
3 4 5
22 21 20
IN2-R
MUX-L TREBLE-L R1 10K C5 3.3nF
MUX-R TREBLE-R C19 3.3nF R9 10K
6 C6 68nF R2 5.6K C6 68nF C9 0.1F 10 PVS-L VDD R3 SDA SCL R4 SDA SCL 11 12 BASSI-L BASSO-L
19 BASSI-R BASSO-R C17 68nF C18 68nF R8 5.6K
7
18
PGND-L
8
17
PGND-R C15 0.1F C16 10F PVS-R
C8 10F PVS-L
15 PVS-R 14 ALC
13 GND 9 OUT-L OUT-R STEREO MINI JAC C12 220F Jumper C13 0.1F R7 4.7 16
C14 0.47F
R6 4.7
C10 0.1F
Jumper J1
C11 220F
J2
OUT-L
OUT-R
D00AU1243
For listering tests
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TDA7469
Figure 5. THD+Noise vs Amplitude @VCC 2.5V, Rload 16
THD (%)
10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 5m 10m 15m 20m 25m 30m
Figure 7. THD+Noise vs Amplitude @VCC 2.5V, Rload 32
THD (%)
10 5 2
Vcc = 2.5V Rload = 16ohm f = 1KHz
1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 2m 4m 6m 8m 10m 12m 14m 16m 18m 20m
Vcc = 2.5V Rload = 32ohm f = 1KHz
Pout (W)
Pout (W)
Figure 6. THD+Noise vs Amplitude @VCC 2.8V, Rload 16
THD (%)
10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 5m 10m 15m 20m 25m 30m 35m
Figure 8. THD+Noise vs Amplitude @VCC 2.8V, Rload 32
THD (%)
10 5 2 1
Vcc = 2.8V Rload = 16ohm f =1KHz
0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 5m 10m 15m 20m 25m 30m
Vcc = 2.8V Rload = 32ohm f = 1KHz
Pout (W)
Pout (W)
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Figure 9. TDA7469 Components Layout
Figure 10. TDA7469 P.C. Board Layout (Top view)
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Figure 11. TDA7469 P. C. Board (Backside view)
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Figure 12. SSO24 Mechanical Data & Package Dimensions
mm DIM. MIN. A A1 A2 B (2) C D (1) E E1 (1) e L L1 k ddd 0.55 0.05 1.65 0.22 0.09 7.9 7.4 5.0 8.2 7.8 5.3 0.65 0.75 1.25 0.95 0.022 1.75 1.85 0.38 0.25 8.5 8.2 5.6 TYP. MAX. 2.00 0.002 0.060 0.009 0.003 0.31 0.29 0.20 0.32 0.30 0.21 0.025 0.029 0.05 0.004 0.079 0.015 0.01 0.33 0.32 0.22 MIN. TYP. MAX. 0.079 inch
OUTLINE AND MECHANICAL DATA
0 (min), 4 (typ), 8 (max) 0.1 0.004
(1) "D and E1" dimensions do not include mold flash or protusions, but do include mold mismatch and are mesaured at datum plane "H". Mold flash or protusions shall not exceed 0.20mm in total (both side). (2) "B" dimension does not include dambar protusion/intrusion.
SSO24 Shrink Small Outline Package
SEATING PLANE C
0.25mm GAGE PLANE
DATUM PLANE H
A2 A1
A K
B
e
ddd
C
L E1 L1
C
D
24
13
E
1
1
2
SSO24ME
0053237 C
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Table 13. Revision History
Date July 2001 July 2004 15 December 2004 Revision 1 2 3 First Issue Removed packages and new style-sheet Modified value Pomax typ. from 8 to 10mW and add. ESD in table 2 Description of Changes
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TDA7469
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
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