Related Manuals for Philips TDA8440
Summary of Contents for Philips TDA8440
- Page 1 DATA SHEET TDA8440 Switch for CTV receivers Product specification File under Integrated Circuits, IC02 INTEGRATED CIRCUITS November 1985...
-
Page 2: General Description
Philips Semiconductors Switch for CTV receivers 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 video amplifier with selectable gain (times 1 or times 2). - Page 3 Philips Semiconductors Switch for CTV receivers S0, S1, S2 and OFF (pins 11, 13, 6 and 2) connected to V 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: Functional Description
Philips Semiconductors Switch for CTV receivers 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. -
Page 5: I 2 C Bus Control
fixed via S sub-address bit, fixed via S read/write bit (has to be 0, only write mode allowed) acknowledge bit (= 0) generated by the TDA8440 1 audio la is selected to audio output a 0 audio la is not selected... - Page 6 Philips Semiconductors Switch for CTV receivers /OFF gating 0 (off input active) 1 (off input inactive) 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...
- Page 7 Philips Semiconductors Switch for CTV receivers CHARACTERISTICS = 25 C; V = 12 V; unless otherwise specified PARAMETER Supply Supply voltage Supply current (without load) Video switch Input coupling capacitor Voltage gain (times 1; SCL = L) (times 2; SCL = H) Voltage gain (times 1;...
- Page 8 Philips Semiconductors Switch for CTV receivers PARAMETER Voltage gain Isolation (off state) (f = 20 kHz) Signal-to-noise ratio (note 5) Total harmonic distortion (note 7) Crosstalk attenuation for interferences caused by video signals (note 6) Weighted Unweighted Crosstalk attenuation for interferences...
- Page 9 SCL, SDA rise time SCL, SDA fall time Data set-up time (write) Data hold time (write) Acknowledge (from TDA8440) set-up time Acknowledge (from TDA8440) hold time Stop condition set-up time Notes to the characteristics 1. Also if the supply is switched off.
- Page 10 Philips Semiconductors Product specification Switch for CTV receivers TDA8440 Fig.2 Timing diagram I C bus. November 1985...
- Page 11 Philips Semiconductors Switch for CTV receivers PACKAGE OUTLINE DIP18: plastic dual in-line package; 18 leads (300 mil) pin 1 index DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT max. min. max. 1.40 0.51 1.14 0.055 inches 0.19 0.020...
-
Page 12: Life Support Applications
Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.