TDA7449L_04 STMICROELECTRONICS [STMicroelectronics], TDA7449L_04 Datasheet
TDA7449L_04
Related parts for TDA7449L_04
TDA7449L_04 Summary of contents
Page 1
DIGITALLY CONTROLLED AUDIO PROCESSOR 1 FEATURES INPUT MULTIPLEXER – 2 STEREO INPUTS – SELECTABLE INPUT GAIN FOR OPTIMAL ADAPTATION TO DIFFERENT SOURCES ONE STEREO OUTPUT VOLUME CONTROL IN 1.0dB STEPS TWO SPEAKER ATTENUATORS: – TWO INDEPENDENT SPEAKER CONTROL IN 1.0dB ...
Page 2
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 ...
Page 3
Table 5. Electrical Characteristcs (refer to the test circuit T all controls flat (G = 0dB), unless otherwise specified) Symbol Parameter SUPPLY V Supply Voltage S I Supply Current S SVR Ripple Rejection INPUT STAGE R Input Resistance IN V ...
Page 4
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 ...
Page 5
APLICATION SUGGESTIONS The first and the last stages are volume control blocks. The control range -47dB (mute) for the first one -79dB (mute) for the last one. Both of them have 1dB step resolution. ...
Page 6
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 ...
Page 7
Figure 10. Acknowledge on the I SCL SDA START 5 SOFTWARE SPECIFICATION 5.1 Interface Protocol The interface protocol comprises: A start condition (S) A chip address byte, containing the TDA7449L address A subaddress bytes A sequence of data (N byte ...
Page 8
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 ...
Page 9
Table 8. SUBADDRESS VOLUME DATA NOT USED 1 DATA NOT USED 2 DATA NOT USED 3 DATA SPEAKER_R DATA Table 9. INPUT SELECTION MSB Table ...
Page 10
TDA7449L Table 11. VOLUME SELECTION MSB VOLUME = 0 to 47dB/MUTE Table 12. SPEAKER ATTENUATE SELECTION MSB ...
Page 11
Figure 14. PIN : CREF Figure 15. PINS ROUT LOUT 20 A D96AU434 Figure 16. PINS 100K V REF Figure 17. PINS: 10, 11 ...
Page 12
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 ...
Page 13
Table 13. Revision History Date Revision April 1999 June 2004 2 Second Issue 3 Modified the style-sheet in compliance with the last revision of the “Corporate Technical Pubblications Design Guide”. Description of Changes TDA7449L 13/14 ...
Page 14
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. ...