WIDE RANGE TRANSIMPEDANCE AMPLIFIER

摘要

One aspect of this disclosure is a transimpedance amplifier circuit with multiple resistive feedback loops can be implemented with multiple Kelvin sensing channels. A transimpedance amplifier and multiple Kelvin sensing channels can be implemented on a single die having multiple contacts, such as pins, for connecting multiple resistors to the Kelvin sensing channels. The Kelvin sensing channels can be implemented with T-junction switch networks in certain embodiments.

主权项

1. An apparatus comprising a die, the die comprising:
a transimpedance amplifier; a switch network comprising an input switch, an intermediate node, and an output switch, the input switch being electrically connected to the output switch at the intermediate node, wherein the input switch is electrically connected between an output of the transimpedance amplifier and the intermediate node; and a contact configured to provide an electrical connection to the intermediate node external to the die.