Patent ID: 11949417
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Control (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An oscillator comprising:
a trimmable capacitor;
a trimmable current source coupled to the trimmable capacitor, wherein the trimmable current source includes:
a first trimmable resistor and a second trimmable resistor, and wherein the first trimmable resistor and the second trimmable resistor each include: a fixed resistor; a plurality of resistors; and a first plurality of switches, each of the first plurality of switches is coupled to a respective one of the plurality of resistors; and
a bias circuit coupled to a trim control, wherein the bias circuit includes a first portion current coupled to the first trimmable resistor and a second portion current coupled to the second trimmable resistor;

a comparator coupled to the trimmable current source, the comparator including a comparator output; and
a data storage element coupled to the comparator output, the data storage element including one of a flip-flop and a latch;
wherein the bias circuit includes:
a plurality of transistors coupled in parallel and a second plurality of switches, and wherein each of the second plurality of switches is coupled to a respective drain of the plurality of transistors.