TDA7575 STMicroelectronics, TDA7575 Datasheet
TDA7575
Specifications of TDA7575
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TDA7575 Summary of contents
Page 1
... This device is equipped with a full diagnostic array that communicates the status of each speaker through the I bility of driving loads down to 1 paralleling the outputs into a single channel also possible to disable the and control the TDA7575 by means of the usual ST- BY and MUTE pins ADDRESS A B ...
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... TDA7575 PIN CONNECTION (Top view) OUT1+ OUT1+ PWGND PWGND OUT1- OUT1- OUT2- OUT2- PWGND PWGND OUT2+ OUT2+ ABSOLUTE MAXIMUM RATINGS Symbol V Operating Supply Voltage Supply Voltage S V Peak Supply Voltage (for t = 50ms) peak V CK pin Voltage CK V Data Pin Voltage DATA ...
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... O HE MODE 4- 1-12W 10kHz MODE Single channel configuration (1 pin >2.5V 4-30W 600 600 ; Gv = 26dB filter 20 to 22kHz Rg = 600 ; Gv = 12dB filter 20 to 22kHz f = 100Hz to 10kHz 1Vpk 600 g (-3dB) Mute & Play V = 1Vpk-pk TDA7575 Min. Typ. Max. Unit 130 200 125 130 140 ...
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... TDA7575 ELECTRICAL CHARACTERISTCS: (continued) Symbol Parameter V Maximum common mode input MC level SR Slew Rate V Mute/Unmute Transient PM V Mute/Stand-by Transient TO T Turn on Delay ON T Turn off Delay OFF V St-By pin for St-By OFF V St-By pin for standard bridge SB V St-By pin for Hi-eff ...
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... Shorted Load det. Test Condition CD on; V < 300mV CD D0 (IB1 (IB1 Power Amplifier in st-by condition Power Amplifier in st-by Power Amplifier in Mute or Play condition, one or more short circuits protection activated Pow. Amp. mode Line Driver mode TDA7575 Min. Typ. Max. Unit 1 mA 0.8 1.3 2 ...
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... I C BUS INTERFACE Data transmission from microprocessor to the TDA7575 and viceversa takes place through the 2 wires I face, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be connected). Data Validity As shown by fig. 1, the data on the SDA line must be stable during the high period of the clock. ...
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... In order to implement this feature, outputs are to be connected on the board as follows: OUT1+ (PIN35 and PIN36) shorted to OUT2+ (PIN19 and PIN20) OUT1- (PIN28 and PIN29) shorted to OUT2- (PIN26 and PIN27). 2 CBUS DATA LINE CHANGE STABLE, DATA DATA VALID ALLOWED 2 CBUS D99AU1032 2 3 D99AU1033 D99AU1031 2 I CBUS STOP ACKNOWLEDGMENT FROM RECEIVER TDA7575 7/17 ...
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... STD MODE: 3.5V < stby (PIN5) < 5 – HE MODE: Vstby (PIN5) > 7V – PLAY MODE: Vmute (pin 4) >3.5V For both STD and HE MODE the play/mute mode can be set acting on Vmute pin. 8/ PIN (PIN16) and control the TDA7575 by means of the C PIN must be set as follows bus interface short I 2 ...
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... SOFTWARE SPECIFICATIONS All the functions of the TDA7575 are activated by I The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from P to TDA7575) or read instruction (from TDA7575 to P). ADDRESS SELECTION R R the P sends 2 "Instruction Bytes": IB1 and IB2. ...
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... TDA7575 If R the TDA7575 sends 2 "Diagnostics Bytes" DB1 and DB2. DB1 D7 Thermal warming (if Tchip Diag. cycle not activated or not terminated ( Diag. cycle terminated ( Channel 1 D4 Turn-on diagnostic ( Permanent diagnostic ( Channel 1 D3 Normal load ( Short load ( Channel 1 Turn-on diag.: No open load ( Offset diag.: No output offset ( ...
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... ACK ACK IB1 ACK X000XXXX ACK IB1 ACK X0XXXXXX ACK IB1 ACK XX1XX1XX ACK DB1 ACK 2 C bus request. Detectable output faults are: TDA7575 IB2 ACK STOP DB2 ACK STOP IB2 ACK STOP XXX1XX1X IB2 ACK STOP XXX0XXXX IB2 ACK STOP ...
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... TDA7575 Afterwards, when the Amplifier is biased, the PERMANENT diagnostic takes place. The previous Turn On state is kept until a short appears at the outputs. Fig A: Turn - On diagnostic: working principle Isource Isink Fig. B and C show SVR and OUTPUT waveforms at the turn-on (stand-by out) with and without TURN-ON DI- AGNOSTIC ...
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... The following additional features are provided: – OUTPUT OFFSET DETECTION The TDA7575 has 2 operating statuses: 1) RESTART mode. The diagnostic is not enabled. Each audio channel operates independently from each oth- er. If any of the a.m. faults occurs, only the channel(s) interested is shut down. A check of the output status is made every 1 ms (fig ...
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... TDA7575 relevant data are stored inside the device and can be read by the microprocessor. When one cycle has terminated, the next one is activated throughout the car-radio operating time. – To check the status of the device a sampling system is needed. The timing is chosen at microproces- sor level (over than half a second is recommended). ...
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... OFFSET ENABLE - 30ms - I 2 (repeat I C reading until high-offset message disappears). S. GND (sk GND GND S. GND read (repeat until All faults disappear reading TDA7575 2 C reading and faults removal, S. Across L. Open L. S. GND S. GND S. GND Open L. (*) Across L. N.A. / Open L. (*) new cycle will be able to start, 15/17 ...
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... TDA7575 mm DIM. MIN. TYP. MAX. A 3.25 3.5 0.128 A2 3.3 A4 0.8 1 0.031 A5 0 0.075 b 0.22 0.38 0.008 c 0.23 0.32 0.009 D 15.8 16 0.622 D1 9.4 9 13.9 14.5 0.547 E1 10.9 11.1 0.429 E2 2.9 E3 5.8 6.2 0.228 E4 2.9 3.2 0.114 e 0.65 e3 11. 0.075 H 15.5 15 ...
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