| 摘要 |
A sense amplifier having improved common mode rejection has a differential input and a differential output. A first level shifting transconductance circuit is connected to receive the differential input. A gain and compensation circuit is connected to the level shifting transconductance circuit, and a buffer is connected to the gain and compensation circuit. The differential output of the sense amplifier is taken at an output of the buffer. A feedback network is connected between the output of the buffer and an input of the gain and compensation circuit. The feedback network includes a divider circuit connected to the output of the buffer and a second level shifting transconductance circuit connected between the divider circuit and the input of the gain and compensation circuit. The first and second level shifting transconductance circuits are preferably matched to one another for distortion cancellation.
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