INTEGRATED CIRCUITS DATA SHEET TDA8440 Switch for CTV receivers Product specification File under Integrated Circuits, IC02 November 1985
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 GENERAL DESCRIPTION Features The TDA8440 is a versatile video/audio switch, intended to be used in CTV receivers equipped with an AUXILIARY VIDEO/AUDIO plug. • Combined analogue and digital circuitry gives maximum flexibility in channel switching 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).
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. Fig.1 Block diagram and test circuit.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 FUNCTIONAL DESCRIPTION The TDA8440 is a monolithic system of switches and can be used in CTV receivers equipped with an AUXILIARY VIDEO/AUDIO plug. The IC incorporates 3-state switches; they comprise: a) An electronic video switch with selectable gain (times 1 or times 2) for switching between an internal video signal (from the IF amplifier) and an AUXILIARY input signal.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 I2C BUS CONTROL Detailed information on the I2C bus is available on request. Table 2 TDA8440 I2C bus protocol.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 D0/OFF gating OFF INPUT D0 OUTPUTS 0 (off input active) H OFF 0 L in accordance with last defined D7 - D1 (may be entered while OFF = HIGH) 1 (off input inactive) H in accordance with D7 - D1 1 L in accordance with D7 - D1 Power-on reset The circuit is provided with a power-on reset function.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 CHARACTERISTICS Tamb = 25 °C; VP = 12 V; unless otherwise specified PARAMETER SYMBOL MIN. TYP. MAX.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 PARAMETER SYMBOL MIN. TYP. MAX.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 PARAMETER SYMBOL MIN. TYP. MAX.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 Fig.2 Timing diagram I2C bus.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 PACKAGE OUTLINE DIP18: plastic dual in-line package; 18 leads (300 mil) SOT102-1 ME seating plane D A2 A A1 L c e Z w M b1 (e 1) b b2 MH 10 18 pin 1 index E 1 9 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 b2 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 4.7 0.51 3.7 1.40 1.14 0.53 0.38 1.40 1.14 0.32 0.
Philips Semiconductors Product specification Switch for CTV receivers TDA8440 with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board.
