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參數(shù)資料
| 型號： | LA75520K |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | 0.300 INCH, DIP-24 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 134K |
| 代理商： | LA75520K |
LA75520K
No.A0648-11/12
Continued from preceding page.
Pin No.
Pin name
Function
Equivalent Circuit
16
IF AGC
IF AGC filter connection pin.
The signal peak-detected by the built-in AGC
detector is converted to the AGC voltage at pin 16.
Additionally, a second AGC filter (a lag-lead filter)
used to create the dual time constants is provided
internally in the IC.
Use a 0.022
μF capacitor as the external capacitor
(C1), and adjust the value according to the sag,
AGC speed, and other characteristics.
16
5k
Ω
1k
Ω
1k
Ω
C1
17
18
VIF IN2
VIF IN1
VIF amplifier input pin
The input circuit is a balanced circuit, and the input
impedance is as follows:
R
≈ 1.0kΩ
18
1k
Ω
17
1k
Ω
19
GND
20
RF AGC VR
RF AGC volume connection pin
This pin sets the tuner RF AGC operating point.
Also, the FM output and the video output can both
be muted at the same time by connecting this pin to
ground.
20
1k
Ω
1k
Ω
21
SIF CARRIER OUT
First SIF output pin
This is an emitter-follower output with a 200
Ω
resistor attached in series.
21
200
Ω
22
AUDIO BIAS
FILTER
Connection pin for a filter used to hold the FM
detector output DC voltage fixed. Normally, a 1
μF
electrolytic capacitor should be used. The
capacitance (CI) should be increased if the low
band (around 50Hz) frequency characteristics need
to be improved.
22
300
Ω
300
Ω 40kΩ
40k
Ω
C1
+
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA75520K | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| LA75520VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75521VA | AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75521VA | AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75525AVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA75520KVA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC IF Signal Processing (VIF+SIF) IC that Supports the PAL Video Standard for TV Sets and VCRs |
| LA75521VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal Processing (VIF+SIF) IC that Supports the PAL Video Standard for TV Sets and VCRs |
| LA75525AVA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:VIF/SIF Signal-Processing IC |
| LA75525VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC For TV Sets and VCRs VIF/SIF Signal-Processing IC |
| LA7555 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal Processing (VIF+SIF) Cricuit for TV/VCR Use |
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