Title:
デジタル式にプログラム可能なトランスコンダクタ
Document Type and Number:
Japanese Patent JP4049567
Kind Code:
B2
Abstract:
A cascode transconductor circuit controls the transconductance of a differential stage with an active load followed by a cascode or folded-cascode current follower in discrete steps. The circuit includes a transconductor receiving first and second input voltages, and outputting first and second internal currents, a first resistive divider receiving the first internal current at a digitally-selected first node, and generating a third internal current at a third node, a second resistive divider receiving the second internal current at a digitally-selected second node, and generating a fourth internal current at a fourth node, and a cascode circuit receiving the third and fourth internal currents and supplying first and second output currents.
Inventors:
Holia Juroiu
Application Number:
JP2001314679A
Publication Date:
February 20, 2008
Filing Date:
October 12, 2001
Export Citation:
Assignee:
Oki America, Inc.
International Classes:
H03F1/22; G06G7/06
Domestic Patent References:
| JP62071310A | ||||
| JP6510407A | ||||
| JP7162240A | ||||
| JP7212187A | ||||
| JP59080010A | ||||
| JP61242407A | ||||
| JP7058563A | ||||
| JP11177371A |
Attorney, Agent or Firm:
Minoru Maeda
Youichi Yamagata
Youichi Yamagata