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參數(shù)資料
| 型號： | LA70020 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Recording/Playback Amplifier for VHS VCRs |
| 中文描述： | 錄音/放音放大器適合于VHS錄像機 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 173K |
| 代理商： | LA70020 |
Video REC AMP Gain Control
The LA70020 eliminates recording current adjustment by adding an automatic gain control circuit to the recording
amplifier. It is also possible to change the recording current with the following methods.
REC-CURRENT-ADJ2 Open
The internal bias forces the DC level at pin 18 to 1/2 V
CC
(that is, approximately 2.5 V), and R
O
1 determines the
recording current.
Design values
R
O
1 = 1.5 k
= 16.0 mA (SP) (per channel)
R
O
1 = 1.5 k
= 12.7 mA (EP)
REC-CURRENT-ADJ2 Used
Applying a DC control voltage between 1 and 4 V to pin 18 adjusts the figure determined by R
O
1 between –6.0 dB and
+3.5 dB.
[
Note: One possible circuit for applying this voltage is the following, which provides 9 modes between 1 and 4 V.
Hi-Fi REC AMP Gain Control
The LA70020 eliminates recording current adjustment by adding an automatic gain control circuit to the recording
amplifier. It is also possible to change the recording current with the following methods.
REC-CURRENT-ADJ
R
O
1 determines the recording current.
Design values
R
O
1 = 1.0 k
= 24.0 mA (SP) (per channel)
R
O
1 = 1.5 k
= 16.0 mA (EP)
No. 5711-12/13
LA70020, 70020M
d
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA70020M | Recording/Playback Amplifier for VHS VCRs |
| LA70100M | SECAM CHROMA- SIGNAL PROCESSOR IC FOR VCR |
| LA7015N | VTR NOISE CANCELER FOR -VTR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA70020M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Recording/Playback Amplifier for VHS VCRs |
| LA7003 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA7003S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA7005 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA70056T-MPB-E | 制造商:ON Semiconductor 功能描述:HEAD AMPLIFIER FOR DVC |
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