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參數資料
| 型號： | GT560 |
| 英文描述： | GT560 - Digitally Controlled Transconductance Block |
| 中文描述： | GT560 -數控跨導塊 |
| 文件頁數： | 4/5頁 |
| 文件大?。?/td> | 83K |
| 代理商： | GT560 |
4
510 - 64 - 03
7
2
3
6
1
10
1/3
LC508
9
5
0.1
0.1
8
GT560
V
B
=1.3VDC
S1
R
E
22k
0.1
1.2M
S3
3.9k
1/3
LC508
1/3
LC508
+
1.0
+
R
S
3.9k
S2
2
4
5
10
3
7
9
8
1
6
R
CVR
All resistors in ohms, all capacitors in microfarads unless otherwise stated
S1, S2 are momentary switches or contacts
Closing S1 increases gain
Closing S2 decreases gain
Fig. 3 Typical Hearing Aid Application
All resistors in ohms, all capacitors in microfarads unless otherwise stated
S1 can be a momentary SPST switch or a pair of contacts.
On initial power-up (insertion of the battery) the gain will be at a random setting
Fig. 2 Typical Hearing Aid Circuit
7
2
3
6
1
10
+
5
LC549
0.068
0.1
8
GT560
V
B
=1.3VDC
S1
7
0.1
6.8
1.2M
S2
6.8
1/2
LP508
1.0
R
S
3.9k
R
CVR
2
4
5
5
4
6
1
8
3
1
6.8
2
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