Patent · US Active

Wideband switched current source

US7777655B2 · kind B2 · utility

1Cited by

2References

13Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Ankit Seedher · Kanchinakote, IN
Preetam Charan Anand Tadeparthy · Bengaluru, IN
Jomy G Joy · Bengaluru, IN

Key dates

Filing date	Oct 23, 2008
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Oct 23, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/453
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Traditionally, constant current source circuits (and, in particular, constant current source circuits that include cascoded current sources) had numerous drawbacks due to parasitic capacitances, especially at higher switching frequencies. Here, however, a constant current source circuit is provided which uses main and replica constant current source circuitry (with buffering therebetween) to counteract the problems created by parasitic capacitances. Thus, with these new circuits, a generally constant current can be generated, regardless of switching frequency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.