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參數資料
| 型號： | TDA5931-65 |
| 廠商： | SIEMENS A G |
| 元件分類： | 接收器 |
| 英文描述： | Video IF Amplifier and Demodulator with Full-SCART |
| 中文描述： | AM, VIDEO DISCRIMINATOR, PDIP18 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 297K |
| 代理商： | TDA5931-65 |
Functional Description
Video IF for all European standards for positive and negative modulation. The video section
contains a Full-SCART interface. An output for the demodulated video signal (pin 9) allows the
insertion of a sound trap into the signal path to the input or the SCART switch and the SCART output
buffer amplifier (pin 7). The analog setting function (delayed AGC threshold) is controlled via a
potentiometer, all other switch functions are controlled via open-collector transistors.
Circuit Description
The component includes a four-stage, capacitively coupled, symmetrically designed and controlled
amplifier, a limiter with selection, and a mixer for quasi-synchronous demodulation of positive and
negative modulated IF signals. In addition a video output amplifier and noise suppression circuitry
are included. This output is used for generating the AGC voltage. The AGC for both modulation
types has been realized as integral AGC with noise free peak and mean value detector (only for
positive modulation). For SCART applications this output is switched a video source switch with two
inputs (for the demodulator signal or SCART socket) and two outputs (SCART- and TV output). The
demodulator output (pin 9) provides a video signal output level 3 dB higher than the level required
for the operation of the TV set or to drive the SCART connector. Therefore it is possible to insert a
sound trap in between this output and the input of the SCART switch (pin 7). The insertion loss of
the sound trap has to attenuate the signal level at pin 9 by a factor 2/3 or 3 dB (AC and DC) to avoid
distortions in the SCART switch.
The delayed tuner AGC is generated by a threshold amplifier driven by the control voltage. The
amplifier response can be controlled by means of an external potentiometer. (The increase of the
tuner AGC voltage shall create a higher tuner gain = positive control).
Type
Ordering Code
Package
TDA 5931-65
Q67000-A5136
P-DIP-18
Video IF Amplifier and Demodulator
with Full-SCART
Bipolar IC
TDA 5931-65
P-DIP-18
Features
G
Multistandard video IF
G
Interference suppression circuitry
G
Mean/peak value control
G
Area of application: TV set with Full-SCART
Semiconductor Group
31
06.94
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| TDA5931 | Video IF Amplifier and Demodulator with Full-SCART |
| TDA5940 | Video and Sound IF with V & S SCART |
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| TDA5950 | Video and Sound IF with FM-PLL Demodulator, AFC and V & S SCART |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TDA5940 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video and Sound IF with V & S SCART |
| TDA5940-2 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video and Sound IF with V & S SCART |
| TDA5950 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video and Sound IF with FM-PLL Demodulator, AFC and V & S SCART |
| TDA5950X | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video and Sound IF with FM-PLL Demodulator, AFC and V & S SCART |
| TDA6050-5 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Video IF with FPLL, MAC State |
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