| 摘要 |
PROBLEM TO BE SOLVED: To provide a small amplitude differential interface circuit for adopting a configuration not causing DC level variations in an output signal and suitable for adoption of a low voltage. SOLUTION: The small amplitude differential interface circuit includes first, second and third current sources I1, I2 and I3 and first and second switching elements SW1, SW2. The current of the generating section current source I1 is equal to the current of the second current source I2 each other and the current of the third current source I3 is twice the current of the first and second current sources I1, I2. The first current source I1 and the third current source I3 are connected via the first switching element SW1, and the second current source I2 and the third current source I3 are connected via the second switching element SW2. A first output Vo1 is extracted from a connecting point between the first switching element SW1 and the first current source I1 and a second output Vo2 is extracted from a connecting point between the second switching element SW2 and the second current source I2, respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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