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參數資料
| 型號： | LA7289 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | VCR Audio Signal Record and Playback Processor |
| 中文描述： | 錄像機音頻信號處理器記錄和回放 |
| 文件頁數： | 10/11頁 |
| 文件大?。?/td> | 210K |
| 代理商： | LA7289 |
No. 5642-10/11
LA7289
Continued from the preceding page.
Pin No.
18
Function
Function description
When the pin 18 voltage is:
Internal circuit
Muting control
3.6 to 6.0 V: Muting will be on.
0.0 to 1.5 V: Muting will be off.
19
Record/EE control
When the pin 19 voltage is:
3.0 to 6.0 V: Record mode
0.0 to 1.0 V: EE mode
20
Power supply (V
CC
)
V
CC
max = 14 V
V
CC
= 8.5 V to 12.5 V
Connect an electrolytic capacitor between
21
Ripple filter
this pin and ground to remove ripple
from the power supply.
22
Record amplifier output
Output impedance
→
50
(typical)
23
Record bias automatic control input
EE and playback modes
→
On
Record mode
→
Off
On resistance
→
20
(typical)
and playback switch
24
EQ switch 2
This pin switches the high-band peaking
frequency in record and playback modes.
REC PB
EP On On
LP On Off
SP Off Off
On resistance: 30
(typical)
Power supply
for all circuit
blocks
A06836
A06837
A06838
A06839
A06840
A06841
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