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Philips TDA8440 manual

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Table of contents for the manual

  • Page 1

    DA T A SH EET Product specification File under Integrated Circuits, IC02 November 1985 INTEGRA TED CIRCUITS TDA8440 Switch for CTV receivers[...]

  • Page 2

    November 1985 2 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 GENERAL DESCRIPTION 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 vid[...]

  • Page 3

    November 1985 3 Philips Semiconductors Product specification 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 V P 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.[...]

  • Page 4

    November 1985 4 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 (ti[...]

  • Page 5

    November 1985 5 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 I 2 C BUS CONTROL Detailed information on the I 2 C bus is available on request. T able 2 TDA8440 I 2 C bus protocol. OFF FUNCTION With the OFF input all outputs can be switched off (mode high ohmic), depending on the value of D 0 . ST A A 6 A 5 A 4 A 3 A[...]

  • Page 6

    November 1985 6 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 D 0 /OFF gating Power-on reset The circuit is provided with a power-on reset function. When the power supply is switched on an internal pulse will be generated that will reset the internal memory S 0 , in the initial state all the switches will be in the [...]

  • Page 7

    November 1985 7 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 CHARACTERISTICS T amb =2 5 ° C; V P = 12 V ; unless otherwise specified P ARAMETER SYMBOL MIN. TYP . MAX. UNIT Supply Supply voltage V 15-4 10 − 13,2 V Supply current (without load) I 15 − 37 50 mA Video switch Input coupling capacitor C 1 C 3 100 ?[...]

  • Page 8

    November 1985 8 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 V oltage gain V 9-12 − 10 + 1d B V 10-12 − 10 + 1d B V 5-14 − 10 + 1d B V 7-14 − 10 + 1d B Isolation (off state) (f = 20 kHz) 90 −− dB Signal-to-noise ratio (note 5) S/S + N9 0 −− dB T otal harmonic distortion (note 7) THD −− 0,1 % Cro[...]

  • Page 9

    November 1985 9 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 Notes to the characteristics 1. Also if the supply is switched off. 2. Caused by drive on any other input at maximum level, measured in B = 5 MHz, source impedance for the used input 75 Ω , 3. 4. Supply voltage ripple rejection = 20 5. 6. Caused by driv[...]

  • Page 10

    November 1985 10 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 Fig.2 Timing diagram I 2 C bus.[...]

  • Page 11

    November 1985 11 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 P ACKAGE OUTLINE REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE IEC JEDEC EIAJ SOT102-1 93-10-14 95-01-23 UNIT A max. 12 b 1 (1) (1) (1) b 2 cD E e M Z H L mm DIMENSIONS (inch dimensions are derived from the original mm dimensions) A min. A ma[...]

  • Page 12

    November 1985 12 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 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. However, wave soldering is not always suitab[...]