发明名称 |
SOLID STATE ISOLATION DEVICE USING OPTO-ISOLATORS |
摘要 |
An isolation circuit (20) that is devoid of coupling transformers and yet suitable for use as a telephone line interface. The circuit is characterized by very wide bandwidth, low noise, and high linearity. Opto-isolators couple analog transmit and receive channels in a user device (12) across an isolation barrier (57) to a line pair for full duplex communication on the line pair. The interface circuit, which also includes a hybrid (55), includes first and second oppositely directed linear optocouplers (50,52). The first is disposed between the transmit channel and the hybrid; the second between the receive channel and the hybrid.
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申请公布号 |
US5245654(A) |
申请公布日期 |
1993.09.14 |
申请号 |
US19910775628 |
申请日期 |
1991.10.10 |
申请人 |
CERMETEK MICROELECTRONICS, INC. |
发明人 |
WILKISON, DENNIS E.;LEE, DON N. |
分类号 |
H04M1/00;H04M1/738;H04M7/00 |
主分类号 |
H04M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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