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参数资料
| 型号： | TA8189N |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 4 CHANNEL, AUDIO PREAMPLIFIER, PDIP24 |
| 封装： | SDIP-24 |
| 文件页数： | 11/15页 |
| 文件大小： | 1399K |
| 代理商： | TA8189N |
TA8189N
2002-10-30
5
Terminal
No.
Symbol
Function
Equivalent Circuit
19
Tape A / tape B
SW
Play back AMP input
selector
Application Information And Application Method
1. Input level of play amp.
In case that input voltage (Vin > 0.0245Vrms (-30dBm)) is applied to A-head and B-head at same time on a set,
use A-head for reproducing only and, B-head for recording or reproducing.
In case that the over-voltage is applied to A-head and B-head at same time, the transistor Q3, Q4 are made a
saturation condition and NF condenser is discharged by base-current of Q3, Q4 and the output DC voltage of
pin 3 / 22 are raised.
In case of the high input, use B-head, because of building in the diode against saturation on Q4.
2. Power source line
In case of including the ripple on the power source line, stabilize by using a transistor as following figure.
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