TDA7448 STMicroelectronics, TDA7448 Datasheet
TDA7448
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TDA7448 Summary of contents
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... CHANNEL INPUTS 6 CHANNEL OUTPUTS VOLUME ATTENUATION RANGE -79dB VOLUME CONTROL IN 1.0dB STEPS 6 CHANNEL INDEPENDENT CONTROL ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS 2 DESCRIPTION The TDA7448 channel volume controller for quality audio applications in Multi-Channels Audio Systems Figure 2. Block Diagram 2 IN1 19 IN2 3 IN3 ...
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... TDA7448 Table 2. Absolute Maximum Ratings Symbol V Operating Supply Voltage S T Operating Ambient Temperature amb T Storage Temperature Range stg Figure 3. Pin Connection (Top view) Table 3. Thermal Data Symbol R thermal Resistance junction-pins th j-pin Table 4. Quick Reference Data Symbol V Supply Voltage S V Max Input Signal Handling ...
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... Test Condition THD = 0.3% The selected input is grounded through a 2.2 capacitor -24dB -24 to -79dB -24dB -24 to -79dB V adyacent attenuation steps THD = 0. 20Hz to 20KHz All gains = 0dB, Flat All gains = 0dB 1Vrms 1Vrms 0. 1.6mA O TDA7448 Min. Typ. Max. Unit 4. 2.5 Vrms 0 ...
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... TDA7448 Figure 4. Test circuit 0.47 F IN1 0.47 F IN2 0.47 F IN3 0.47 F IN4 0.47 F IN5 0.47 F IN6 APPLICATION SUGGESTIONS The volume control range -79dB, by 1dB step resolution. The very high resolution allows the implementation of systems free from any noise acoustical effect. 3.1 CREF The suggested 10 F reference capacitor (CREF) value can be reduced to 4 ...
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... I C BUS INTERFACE Data transmission from microprocessor to the TDA7448 and vice versa takes place through the 2 wires I terface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be connected). 4.1 Data Validity As shown in fig. 8, the data on the SDA line must be stable during the high period of the clock. The HIGH and LOW state of the data line can only change when the clock signal on the SCL line is LOW ...
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... LSB D96AU420 ACK = Acknowledge Start; 5.1 EXAMPLES 5.1.1 No Incremental Bus The TDA7448 receives a start condition, the correct chip address, a subaddress with the (no incremental bus), N-data (all these data concern the subaddress selected), a stop condition. CHIP ADDRESS MSB D96AU421 5.1.2 Incremental Bus The TDA7448 receivea start conditions, the correct chip address, a subaddress with the (incremental bus): now loop condition with an autoincrease of the subaddress whereas SUBADDRESS from " ...
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... Table 8. SPEAKER ATTENUATION SELECTION MSB value = 0 to -79dB and MUTE TDA7448 XXX10010 XXXXXXXX XXXXXXXX 00000000 XXXXXXXX XXXXXXXX 00101111 LSB SPEAKER ATTENUATION D0 0 0dB 1 -1dB 0 -2dB 1 -3dB 0 -4dB 1 -5dB 0 -6dB 1 -7dB -0dB -8dB -16dB -24dB -32dB -40dB -48dB -56dB -64dB -72dB MUTE 7/14 ...
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... TDA7448 Figure 11. PIN: CREF Figure 12. PINS 14, 15 OUT1 to OUT6 20 A D02AU1398 Figure 13. PINS 17, 18 100K V REF 8/14 Figure 14. PINS: 10 20K 20K D96AU430 Figure 15. PINS D96AU425 20 A SCL D96AU424 SDA 20 A D96AU423 ...
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... C14 C15 100µF 16V 0.1µ GND C2 22µF 16V 7 C4 22µF 16V 14 C6 22µF 16V 6 C8 22µF 16V 15 C10 22µF 16V 5 C12 22µF 16V JP1 TDA7448 J2 OUT1 J4 OUT1 1 OUT2 2 OUT3 3 OUT4 4 OUT5 5 OUT6 6 GND DGND 3 SCL 4 SDA I2C 9/14 ...
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... TDA7448 Figure 17. Component Layout (65 x 72mm) Figure 18. PC Board (Component side) 10/14 ...
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... Figure 19. PC Board (Solder side) TDA7448 11/14 ...
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... TDA7448 Figure 20. SO-20 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 2.35 2.65 A1 0.10 0.30 B 0.33 0.51 C 0.23 0.32 (1) 12.60 13. 7.40 7.60 e 1.27 H 10.0 10.65 h 0.25 0.75 L 0.40 1.27 k 0˚ (min.), 8˚ (max.) ddd 0.10 (1) “D” dimension does not include mold flash, protusions or gate burrs ...
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... Table 9. Revision History Date Revision January 2004 June 2004 1 First Issue 3 Modified the style-sheet in compliance with the last revision of the “Corporate Technical Pubblications Design Guide”. Description of Changes TDA7448 13/14 ...
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... TDA7448 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 ...