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TDA5940-2 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Video and Sound IF with V & S SCART - Siemens Semiconductor

भाग संख्या TDA5940-2
समारोह Video and Sound IF with V & S SCART
मैन्युफैक्चरर्स Siemens Semiconductor 
लोगो Siemens Semiconductor लोगो 
पूर्व दर्शन
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TDA5940-2 pdf
TDA 5940-2
Circuit Description
Video IF Section
The video IF section incorporates a four-stage, capacitively coupled, symmetrical and controlled
amplifier, a limiter with selection and a mixer for quasi-synchronous demodulation of negative
modulated IF signals followed by a video output amplifier. The video demodulator output and the
SCART-switch input are connected by means of a sound trap. The SCART switch has two inputs
(for signals from video demodulator and SCART socket) and two outputs (SCART socket and TV
output). Parallel to the video output amplifier the video signal is used for generating the AGC
voltage. The control circuit is designed on the integralaction AGC principle, employing a noise-free
peak value detector. A delayed tuner AGC voltage with positive control direction is derived from the
AGC -voltage via a threshold amplifier that is set by means of an external potentiometer.
Sound IF Section
The sound IF section incorporates a five-stage, symmetrical limiter amplifier followed by a PLL
demodulator. The AF section contains an analog switch for the Full-SCART interface and a volume
control with AF output.
Semiconductor Group
45

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भाग संख्याविवरणविनिर्माण
TDA5940-2Video and Sound IF with V & S SCARTSiemens Semiconductor
Siemens Semiconductor


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