Invention Grant
- Patent Title: Variable gain circuit and tuner system provided with same
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Application No.: US15014621Application Date: 2016-02-03
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Publication No.: US09673769B2Publication Date: 2017-06-06
- Inventor: Takafumi Nasu , Shinichiro Uemura
- Applicant: SOCIONEXT INC.
- Applicant Address: JP Kanagawa
- Assignee: SOCIONEXT INC.
- Current Assignee: SOCIONEXT INC.
- Current Assignee Address: JP Kanagawa
- Agency: McDermott Will & Emery LLP
- Priority: JP2013-164186 20130807
- Main IPC: H03F3/193
- IPC: H03F3/193 ; H03G3/30 ; H03F1/02 ; H03G1/00 ; H03F1/22 ; H03F3/45 ; H03F1/32
Abstract:
A variable gain transconductance amplifier includes an amplifier transistor connected to an input node, a cascode transistor having a source connected to a drain of the amplifier transistor and having a drain connected to an output node, and a switching circuit connecting or disconnecting a node to which the amplifier transistor and the cascode transistor are connected to or from a fixed potential in a switchable manner. A variable gain circuit may include the variable gain transconductance amplifier.
Public/Granted literature
- US20160156323A1 VARIABLE GAIN CIRCUIT AND TUNER SYSTEM PROVIDED WITH SAME Public/Granted day:2016-06-02
Information query
IPC分类:
