RECONFIGURABLE AMPLIFIER

摘要

An amplifier receives a differential signal and, in response, generates a first negative input current and a first positive input current. In a first operating mode, the amplifier receives a second differential signal, and, in response, generates a second negative input current and a second positive input current. In a second operating mode, the amplifier receives the second differential signal, and, in response, generates a third negative input current and a third positive input current. When the device is operating in the first operating mode, the first negative input current is summed with the second negative input current and the first positive input current is summed with the second positive input current. When the device is operating in the second operating mode, the first negative input current is summed with the third negative input current and the first positive input current is summed with the third positive input current.

主权项

1. A device, comprising:
a first input pair for receiving a first differential signal coupled to a first inverting terminal and to a first non-inverting terminal, and, in response thereto, respectively generating a first negative input current and a first positive input current; a second input pair for receiving a second differential signal coupled to a second inverting terminal and to a second non-inverting terminal, and, in response thereto, respectively generating a second negative input current and a second positive input current when the device is operating in a first operating mode; a third input pair for receiving the second differential signal coupled between a third inverting terminal and a third non-inverting terminal, and, in response thereto, respectively generating a third negative input current and a third positive input current when the device is operating in a second operating mode; and a gain stage for: summing the first negative input current with the second negative input current when the device is operating in the first operating mode; summing the first positive input current with the second positive input current when the device is operating in the first operating mode; summing the first negative input current with the third negative input current when the device is operating in the second operating mode; and summing the first positive input current with the third positive input current when the device is operating in the second operating mode.