TDA7449L STMicroelectronics, TDA7449L Datasheet
TDA7449L
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TDA7449L Summary of contents
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... TWO INDEPENDENT SPEAKER CONTROL IN 1.0dB STEPS FOR BALANCE FACILITY – INDEPENDENT MUTE FUNCTION ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS 2 DESCRIPTION The TDA7449L is a volume control and balance (Left/Right) processor for quality audio applica- tions in TV systems. Figure 2. Block Diagram 8 L-IN1 100K ...
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... TDA7449L 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 MUXOUT(L) 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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... THD = 0.3% The selected input is grounded through a 2.2 capacitor 0 -24dB -1 -24 to -47dB -1 -24dB -24 to -47dB V adjacent attenuation steps from 0dB to A max V 0 -20dB -1 -20 to -56dB V adjacent attenuation steps TDA7449L = 10K , R = 600 , L G Typ. Max. Unit 100 K 2 2.5 Vrms 80 100 ...
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... TDA7449L Table 5. Electrical Characteristcs (continued) AUDIO OUTPUTS V Clipping Level CLIP R Output Load Resistance L R Output Impedance Voltage Level DC GENERAL E Output Noise NO E Total Tracking Error t S/N Signal to Noise Ratio S Channel Separation Left/Right C d Distortion BUS INPUT V Input Low Voltage IL V Input High Voltage ...
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... Both of them have 1dB step resolution. The very high resolution allows the implementation of systems free from any noisy acoustical effect. The TDA7449L audioprocessor provides 2 bands tones control. 3.1 CREF The suggested 10 F reference capacitor (CREF) value can be reduced to 4 the application requires faster power ON ...
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... TDA7449L BUS INTERFACE Data transmission from microprocessor to the TDA7449L and vice versa takes place through the 2 wires BUS interface, 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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... ACK = Acknowledge S = Start P = Stop A = Address B = Auto Increment 6 EXAMPLES 6.1 No Incremental Bus The TDA7449L receives a start condition, the correct chip address, a subaddress with the (no incre- mental bus), N-data (all these data concern the subaddress selected), a stop condition. Figure 12. CHIP ADDRESS MSB LSB S 1 ...
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... TDA7449L 6.2 Incremental Bus The TDA7449L receive a start conditions, the correct chip address, a subaddress with the incremen- tal bus): now loop condition with an autoincrease of the subaddress whereas SUBADDRESS from "XXX1000" to "XXX1111" of DATA are ignored. The DATA 1 concern the subaddress sent, and the DATA 2 concern the subaddress sent plus one in the loop etc, and at the end it receivers the stop condition ...
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... TDA7449L XXX10010 X0000000 XXXX1111 XXXX1111 XXXX1111 X0000010 LSB INPUT MULTIPLEXER D0 0 NOT ALLOWED 1 NOT ALLOWED 0 IN2 1 IN1 LSB INPUT GAIN D1 D0 2dB STEPS 0 0 0dB 0 1 2dB 1 0 4dB 1 1 6dB 0 0 8dB 0 1 10dB 1 0 12dB 1 1 14dB 0 0 16dB ...
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... TDA7449L Table 11. VOLUME SELECTION MSB VOLUME = 0 to 47dB/MUTE Table 12. SPEAKER ATTENUATE SELECTION MSB SPEAKER ATTENUATION = 0 to -79dB/MUTE 10/ LSB VOLUME D1 D0 1dB STEPS 0 0 0dB 0 1 -1dB 1 0 -2dB 1 1 -3dB 0 0 -4dB 0 1 -5dB 1 0 -6dB 1 1 -7dB 0dB -8dB -16dB ...
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... Figure 14. PIN : 20K CREF 20K Figure 15. PINS ROUT LOUT 20 A D96AU434 Figure 16. PINS 100K V REF Figure 17. PINS: 10, 11 MUXOUT D96AU430 Figure 18. PIN: 19, Figure 19. PIN SDA D96AU425 TDA7449L GND D96AU491 20 A SCL D96AU424 20 A D96AU423 20 A 11/14 ...
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... TDA7449L Figure 20. DIP20 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. a1 0.254 B 1.39 1.65 b 0.45 b1 0.25 D 25.4 E 8.5 e 2.54 e3 22.86 F 7.1 I 3.93 L 3.3 Z 1.34 12/14 inch MIN. TYP. MAX. 0.010 0.055 0.065 0.018 0.010 1.000 0.335 0.100 0.900 0.280 0.155 ...
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... Table 13. Revision History Date Revision April 1999 2 June 2004 3 Description of Changes Second Issue Modified the style-sheet in compliance with the last revision of the “Corporate Technical Pubblications Design Guide”. TDA7449L 13/14 ...
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... All other names are the property of their respective owners 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 © 2004 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES www.st.com TDA7449L 14/14 ...