Blending temperature-dependent currents to generate bias current with temperature dependent profile
AssigneeQUALCOMM Incorporated
InventorsMohamed Abouzied, Ibrahim Ramez Chamas, Bhushan Shanti Asuri
Life of this patent
Estimating the term…
Abstract
An apparatus for generating a temperature-dependent current. The apparatus includes an input current scaling circuit configured to generate a first current that varies with temperature in accordance with a first programmable slope, and a second current that varies with temperature in accordance with a second programmable slope; and a current temperature blending circuit configured to generate a third current based on the first current over a first temperature range and the second current over a second temperature range, wherein the first temperature range is different than the second temperature range.
Claims30
An apparatus, comprising:
- an input current scaling circuit configured to:
- generate a first current that varies with temperature in accordance with a first programmable slope;
- and
- generate a second current that varies with temperature in accordance with a second programmable slope;
- and
- a current temperature blending circuit configured to generate a third current based on the first current over a first temperature range and the second current over a second temperature range, wherein the first temperature range is different than the second temperature range.
A method, comprising:
- generating a first current that varies with temperature in accordance with a first programmable slope;
- generating a second current that varies with temperature in accordance with a second programmable slope;
- and
- generating a third current based on the first current over a first temperature range and the second current over a second temperature range, wherein the first temperature range is different than the second temperature range.
An apparatus, comprising:
- means for generating a first current that varies with temperature in accordance with a first programmable slope;
- means for generating a second current that varies with temperature in accordance with a second programmable slope;
- and
- means for generating a third current based on the first current over a first temperature range and the second current over a second temperature range, wherein the first temperature range is different than the second temperature range.
Dependencies are inferred from the claim text.