TDA6151-5X

Satellite-Video IC TDA 6151-5 TDA 6151-5X Preliminary Data Bipolar IC Features q Adjustable gain for different FM deviations q Video buffer and special baseband output for the sound processor SDA 6102-5X are available q Clamping circuit for elimination of "Energy Dispersal" signal q Built-in video switch for external applied video signal q Application in satellite receiving systems. P-DIP-20-1 P-DSO-20-1 Type TDA 6151-5 TDA 6151-5X Ordering Code Q67000-A5175 Q67000-A5074 Package P-DIP-20-1 P-DSO-20-1 (SMD) The video circuit for a satellite application consists of a voltage controlled AGC-amplifier, driver for two external de-emphasis networks, followed by a three-stage switch. An additional baseband output is available via a driver. The output signal of the video switch is applied to a video clamping circuit, this clamping circuit removes the energy dispersal signal from the video signal. The clamped signal is applied via a video switch to the SCART-output. Circuit Description The demodulated FM-satellite video signal is fed via a buffer amplifier to a gain controlled amplifier. The gain control is done using an external applied DC-voltage. The output signal of this amplifier is used to drive three separate signal pathes. First of all the baseband is fed via a high pass filter with a cut off frequency of approx. 4 MHz to the input of a SAT-TV-sound processor, e.g. TDA 6160 X. A second output with a buffer amplifier is used to drive two external de-emphasis networks. ...