TDA7342 STMicroelectronics, TDA7342 Datasheet
TDA7342
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TDA7342 Summary of contents
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... BALANCE AND FADER FACILITIES - INDEPENDENT MUTE FUNCTION ALL FUNCTIONS PROGRAMMABLE VIA SE- 2 RIAL I CBUS DESCRIPTION The audioprocessor TDA7342 is an upgrade of the TDA731X audioprocessor family. Due to a highly linear signal processing, using CMOS-switching techniques instead of standard October 2003 LOUDNESS ORDERING NUMBER: TDA7342N bipolar multipliers, very low distortion and very low noise are obtained ...
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... TDA7342 BLOCK DIAGRAM BOUT(L) 2/14 ...
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... Bass Control 2dB step Fader and Balance Control 1.25dB step Input Gain 3.75dB step Mute Attenuation Parameter OUT MONO Parameter Parameter TDA7342 Value 10.5 - -55 to 150 24 OUT RF 23 OUT LR 22 OUT BOUT R 19 BIN R 18 BOUT L 17 BIN L D94AU105A Value 150 Min. Typ. Max ...
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... TDA7342 ELECTRICAL CHARACTERISTICS ( 1KHz. Refer to the test circuit, unless otherwise specified.) Symbol Parameter INPUT SELECTOR R Input Resistance I V Clipping Level CL S Input Separation I R Output Load Resistance L G Minimum Input Gain I MIN G Maximum Input Gain I MAX G Step Resolution step e Input Noise ...
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... WIN = 11 WIN = 10 WIN = 01 WIN = 00 0dB to Mute C = 22nF -20dB CSM MAX C = 22nF -20dB CSM MIN CSM MAX CSM MIN (note 2) Soft Mute Active Data Word = XXX11111 Adjacent Attenuation Steps d = 0.3% TDA7342 Min. Typ. Max. Unit 160 mV 80 100 0.7 1 1.7 ms ...
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... TDA7342 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter GENERAL V Supply Voltage CC I Supply Current CC PSRR Power Supply Rejection Ratio e Output Noise NO E Total Tracking Error t S/N Signal to Noise Ratio S Channel Separation C d Distortion BUS INPUTS V Input Low Voltage IL V Input High Voltage lN I Input Current ...
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... I C BUS INTERFACE Data transmission from microprocessor to the TDA7342 and viceversa takes place thru the 2 2 wires I C BUS interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be externally connected). Data Validity As shown in fig. 3, the data on the SDA line must be stable during the high period of the clock ...
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... TDA7342 SOFTWARE SPECIFICATION Interface Protocol The interface protocol comprises: A start condition (s) A chip address byte,(the LSB bit determines CHIP ADDRESS MSB LSB R/W ACK = Acknowledge S = Start P = Stop I = Auto Increment X = Not used MAX CLOCK SPEED 500kbits/s AUTO INCREMENT If bit I in the subaddress byte is set to "1", the autoincrement of the subaddress is enabled ...
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... IN3 ) LSB FUNCTION 0dB 0 1 -1.25dB 1 0 -2.5dB 1 1 -3.75dB 0 0 -5dB 0 1 -6.25dB 1 0 -7.5dB 1 1 -8.75dB 0 0 -10dB 0 1 -11.25dB 1 0 -12.5dB 1 1 -13.75dB 0 0 -15dB 0 1 -16.25dB 1 0 -17.5dB 1 1 -18.75dB D0 Loudness OFF (1) TDA7342 9/14 ...
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... TDA7342 Mute MSB additional direct mute function is included in the Speaker Attenuators. Note 4: Bass cut for very low frequencies; should not be used at +16 and +18dB bass boost (DC gain) Speaker Attenuators MSB For example an attenuation of 25dB on a selected output is given by 10/14 LSB D3 D2 ...
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... For example 12dB Treble and -8dB Bass give the following DATA BYTE TDA7342 LSB FUNCTION D0 TREBLE STEP 0 -14dB 1 -12dB 0 -10dB 1 -8dB 0 -6dB 1 -4dB 0 -2dB 1 0dB 1 0dB 0 2dB 1 4dB 0 6dB 1 8dB 0 10dB 1 12dB 0 14dB BASS STEPS -10dB -8dB -6dB -4dB -2dB 0dB 0dB 2dB 4dB 6dB 8dB 10dB 12dB 14dB 146B 18dB 11/14 ...
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... TDA7342 Volume MSB For example to select -47.81dB Volume the Data Byte is Power on RESET: All Bytes Set 12/ LSB FUNCTION D0 0.31dB Fine Attenuation Steps 0 0dB 1 -0.31dB 0 -0.62dB 1 -0.94dB 1.25dB Coarse Attenuation Steps 0dB -1.25dB -2.5dB -3.75dB -5dB -6.25dB -7.5dB -8.75dB 10dB Gain / Attenuation Steps ...
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... inch TYP. MAX. 0.063 0.006 Weight: 0.20gr 0.055 0.057 0.015 0.018 0.008 0.354 0.276 0.220 0.031 0.354 0.276 0.220 0.024 0.030 TQFP32 ( 1.40mm) 0.039 TQFP32 TDA7342 OUTLINE AND MECHANICAL DATA A2 A1 0.10mm .004 Seating Plane C K 0060661 C A 13/14 ...
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... TDA7342 2 Purchase Components of STMicrolectronics, conveys a license under the Philips I Rights to use these components Standard Specifications as defined by Philips. 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 ...