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DATA SHEET

Product specification
File under Integrated Circuits, IC02

November 1985

INTEGRATED CIRCUITS

TDA8440
Switch for CTV receivers

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Содержание TDA8440

Страница 1: ...DATA SHEET Product specification File under Integrated Circuits IC02 November 1985 INTEGRATED CIRCUITS TDA8440 Switch for CTV receivers ...

Страница 2: ...dressing 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 co...

Страница 3: ...ion Switch for CTV receivers TDA8440 Fig 1 Block diagram and test circuit 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 ...

Страница 4: ...ts S0 S1 and S2 can be connected to the supply voltage H or to ground L In this way no peripheral components are required for selection Table 1 Sub addressing NON I2C BUS CONTROL If the TDA8440 switching device has to be operated via the AUXILIARY VIDEO AUDIO plug inputs S2 S1 and S0 must be connected to the supply line 12 V The sources internal and external and the gain of the video amplifier can...

Страница 5: ...t fixed via S1 input A0 sub address bit fixed via S0 input R W read write bit has to be 0 only write mode allowed AC acknowledge bit 0 generated by the TDA8440 D7 1 audio la is selected to audio output a D7 0 audio la is not selected D6 1 audio lla is selected to audio output a D6 0 audio lla is not selected D5 1 audio lb is selected to audio output b D5 0 audio lb output is not selected D4 1 audi...

Страница 6: ...switches will be the same as described above RATINGS Limiting values in accordance with the Absolute Maximum System IEC 134 THERMAL RESISTANCE D0 OFF INPUT 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 MIN TYP MAX UNIT Supply voltage pin 15 VP 14 V Input voltage r...

Страница 7: ...nput video signal amplitude gain times 1 V1 4 4 5 V Output impedance Z16 4 7 Ω Output impedance in OFF state Z16 4 100 kΩ Isolation off state fo 5 MHz 60 dB Signal to noise ratio note 3 S S N 60 dB Output top sync level V16 4 2 4 2 8 3 2 V Differential gain G 3 Minimum crosstalk attenuation note 2 V16 4 60 dB Supply voltage rejection note 4 RR 36 dB Bandwidth 1 dB B 10 MHz Crosstalk attenuation fo...

Страница 8: ...al weighted source impedance 1 kΩ 80 dB Supply voltage rejection RR 50 dB Bandwidth 1 dB B 50 kHz I2C bus inputs outputs SDA pin 17 and SCL pin 18 Input voltage HIGH VIH 3 VP V Input voltage LOW VIL 0 3 1 5 V Input current HIGH 1 IIH 10 µA Input current LOW 1 IIL 10 µA Output voltage LOW at IOL 3 mA VOL 0 4 V Maximum output sink current IOL 5 mA Capacitance of SDA and SDL inputs pins 17 and 18 CI ...

Страница 9: ...ter reset has been activated transmission may only be started after a 50 µs delay 11 I2C bus load conditions are as follows 4kΩ pull up resistor to 5 V 200 pF to GND All values are referred to VIH 3 V and VIL 1 5 V Bus free before start 11 tBUF 4 µs Start condition set up time ts STA 4 µs Start condition hold time th STA 4 µs SCL SDA LOW period tLOW 4 µs SCL HIGH period tHIGH 4 µs SCL SDA rise tim...

Страница 10: ...November 1985 10 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 Fig 2 Timing diagram I2C bus ...

Страница 11: ...ns A min A max b max w ME e1 1 40 1 14 0 53 0 38 0 32 0 23 21 8 21 4 6 48 6 20 3 9 3 4 0 254 2 54 7 62 8 25 7 80 9 5 8 3 0 85 4 7 0 51 3 7 inches 0 055 0 044 0 021 0 015 0 013 0 009 1 40 1 14 0 055 0 044 0 86 0 84 0 26 0 24 0 15 0 13 0 01 0 10 0 30 0 32 0 31 0 37 0 33 0 033 0 19 0 020 0 15 MH c e 1 ME A L seating plane A1 w M b1 b2 e D A2 Z 18 1 10 9 b E pin 1 index 0 5 10 mm scale Note 1 Plastic ...

Страница 12: ...to 10 seconds If the bit temperature is between 300 and 400 C contact may be up to 5 seconds DEFINITIONS LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances devices or systems where malfunction of these products can reasonably be expected to result in personal injury Philips customers using or selling these products for use in such applications do so at the...

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