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TDA6151-5X Datasheet

  • TDA6151-5X

  • Satellite-Video IC

  • 15頁

  • INFINEON   INFINEON

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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. After
passing through the de-emphasis networks the baseband signals are fed into two inputs of the de-
Semiconductor Group
1
04.95

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