METHODS AND APPARATUS FOR TUNING A CURRENT SOURCE AND SELECTING A REFERENCE VOLTAGE TO MAINTAIN A TRANSCONDUCTANCE AND TRANSITION FREQUENCIES OF TRANSISTORS OF AN INVERTER

摘要

A circuit including a current source, an inverter, and a device. The current source is configured to receive a first reference voltage and supply an output current. The inverter has a transconductance. The inverter includes a first transistor having a source and a drain and a second transistor having a source. The source of the first transistor is connected to the current source. The source of the first transistor is configured to receive a portion of the output current. The source of the second transistor is connected to the drain of the first transistor. The device is configured to select the first reference voltage such that the output current of the current source varies with changes in a temperature of the current source to maintain the transconductance of the inverter at a same value and prevent changes in respective transition frequencies of both the first transistor and the second transistor.

主权项

1. A circuit comprising:
a current source configured to (i) receive a first reference voltage, and (ii) supply an output current; an inverter having a transconductance, wherein the inverter comprises
a first transistor having a source and a drain, wherein the source of the first transistor is connected to the current source, and wherein the source of the first transistor is configured to receive a portion of the output current, anda second transistor having a source, wherein the source of the second transistor is connected to the drain of the first transistor; and a device configured to select the first reference voltage such that the output current of the current source varies with changes in a temperature of the current source to (i) maintain the transconductance of the inverter at a same value, and (ii) prevent changes in respective transition frequencies of both the first transistor and the second transistor.