Philips TDA8421 free download

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INTEGRATED CIRCUITS DATA SHEET TDA8421 Hi-fi stereo audio processor; I2C bus Product specification File under Integrated Circuits, IC02 May 1988 Philips Semiconductors Product specification Hi-fi stereo audio processor; I2C bus TDA8421 GENERAL DESCRIPTION The TDA8421 is a monolithic bipolar integrated stereo sound circuit with a loudspeaker channel (CH1) and a headphone channel (CH2), digital controlled via the I2C bus, for application in hi-fi audio and television sound. Features · Input selector · Mode selector · Loudspeaker channel (CH1); with volume control, balance control and mute · Headphone channel (CH2); with volume control, balance control and mute · Pseudo stereo and spatial function · Bass and treble control · Electrostatic discharge protection diodes QUICK REFERENCE DATA PARAMETER Supply voltage (pin 4) Input signal handling Input sensitivity full power at the output stage Signal plus noise-to-noise ratio Total harmonic distortion Channel separation Volume control range CH1 Treble control range Bass control range Volume control range CH2 PACKAGE OUTLINE 28-lead dual in-line; plastic (SOT117); SOT 117-1; 1996 november 19. Vi (S+N)/N THD G G G G - - - - -62 -12 -12 -62 200 90 0,05 75 - - - - - - - - 16 12 15 0 mV dB % dB dB dB dB dB SYMBOL VCC VI MIN. 7,5 2 TYP. 12 - MAX. 14 - V V UNIT May 1988 2 May 1988 Philips Semiconductors Hi-fi stereo audio processor; I2C bus 3 Product specification * These values are dependent on the required frequency response and effect. TDA8421 Fig.1 Block diagram. Philips Semiconductors Product specification Hi-fi stereo audio processor; I2C bus PINNING TDA8421 Fig.2 Pinning diagram. FUNCTIONAL DESCRIPTION Input selector The input to channel 1 (CH1) and channel 2 (CH2) is determined by the input selector. The selection is made from the following AF input signals: · IN1 L (pin 26); IN1 R (pin 28) or · IN2 L (pin 1); IN2 R (pin 3) Where IN1 is an internal input signal and IN2 an external input signal. Mode selector For each channel (CH1 and CH2) there is a mode selector which selects between stereo, sound A and sound B in the event of bilingual transmission. Both mode selectors can be controlled independently. May 1988 4 Philips Semiconductors Product specification Hi-fi stereo audio processor; I2C bus Headphone channel (CH2) Volume control and balance The stages for volume control for CH2 consist of two parts for left and right. In each part the gain can be adjusted between 0 and -62 dB in steps of 2 dB. An additional step allows an attenuation of 90 dB. Both parts can be controlled independently over the whole range, which allows the balance to be varied by controlling the volume of left and right. Loudspeaker channel (CH1) Volume control and balance The loudspeaker channel (CH1) also consists of two parts for volume control (left and right). In each part the gain can be adjusted between + 16 dB and -62 dB in steps of 2 dB. An additional step allows an attenuation of 90 dB. Bo