NXP Semiconductors TDA8440
The TDA8440 is a versatile video/audio switch, intended to be used in CTV receivers equipped with an AUXILIARY VIDEO/AUDIO plug. It provides two 3-state switches for audio channels and one 3-state switch for the video channel and a video amplifier with selectable gain (times 1 or times 2). The integrated circuit can be used in conjunction with a microcontroller from the MAB8400 family, and is controlled via a bidirectional I2C bus.GENERAL DESCRIPTION
Sufficient sub-addressing is provided for the I2C bus mode. It can also be controlled directly by d.c. switching signals.FEATURES
● Combined analogue and digital circuitry gives maximum flexibility in channel switching● 3-state switches for all channels
● Selectable gain for the video channels
● Sub-addressing facility
● I2C bus or non-I2C bus mode (controlled by d.c. voltages)
● Slave receiver in the I2C bus mode
● External OFF command
● System expansion possible up to 7 devices (14 sources)
● Static short-circuit proof outputs QUICK REFERENCE DATA Supply voltage range Supply current (without load) Storage temperature Operating ambient temperature range PACKAGE OUTLINE 18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19. V15-4 I15 Tstg Tamb 10 to 13,2 V typ. max. max. 33 mA 50 mA + 125 °C 0 to + 70 °C November 1985 2 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 S0, S1, S2 and OFF (pins 11, 13, 6 and 2) connected to VP or GND. If more than 1 device is used, then the outputs and the pins 8 (bias decoupling of the audio inputs) may be connected in parallel.