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参数资料
| 型号： | ILA1068N |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Versatile Telephone Transmission Circuit with Dialler Interface |
| 中文描述： | 多功能电话传输电路拨号器接口 |
| 文件页数： | 10/11页 |
| 文件大小： | 352K |
| 代理商： | ILA1068N |
ILA1068
10
Voltage gain is defined as G
V
= 20 log
For measuring gain from MIC+ and MIC- the MUTE input should be LOW or open. For measuring the DTMF
input, the MUTE input should be HIGH. Inputs not being tested should be open.
Figure 5. Test circuit for defining voltage gain of MIC+, MIC- and DTMF inputs.
Typical application of the ILA1068, shown here with a piezoelectric earpiece and DTMF dialling. The bridge to the
left and R10 limit the current into the circuit and the voltage across the circuit during line transients. Pulse dialling or
register recall require a different protection arrangement.
Figure 6. Application diagram.
V
O
V
I
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