Invention Grant
US08289082B2 Circuit and method for adjusting an offset output current for an input current amplifier
有权
用于调整输入电流放大器的偏移输出电流的电路和方法
- Patent Title: Circuit and method for adjusting an offset output current for an input current amplifier
- Patent Title (中): 用于调整输入电流放大器的偏移输出电流的电路和方法
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Application No.: US12977034Application Date: 2010-12-22
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Publication No.: US08289082B2Publication Date: 2012-10-16
- Inventor: Armin Prohaska , Terje Saether , Holger Vogelmann
- Applicant: Armin Prohaska , Terje Saether , Holger Vogelmann
- Applicant Address: US CA San Jose
- Assignee: Atmel Corporation
- Current Assignee: Atmel Corporation
- Current Assignee Address: US CA San Jose
- Agency: Baker Botts L.L.P.
- Priority: DE102009060504 20091223
- Main IPC: H03F3/04
- IPC: H03F3/04

Abstract:
A circuit and a method for correcting an offset is provided that includes a current amplifier and an adjusting circuit for correcting an offset of an output current of the current amplifier. Wherein the adjusting circuit has a controlled current source, an output of the controlled current source is connected to the current amplifier for impressing an output current of the controlled current source in the current amplifier, an input of the controlled current source to form a regulation element of a control loop is connected by a first switching device of the adjusting circuit to an output of the current amplifier and to form a holding element is disconnected from the output of the current amplifier by the first switching device. The controlled current source, acting as a regulation element in the control loop, is set up to regulate the offset to a minimum by setting of a current value of the output current, and the controlled current source, acting as a holding element, is set up to hold the current value, associated with the minimum, of the output current.
Public/Granted literature
- US20110148380A1 CIRCUIT AND METHOD FOR ADJUSTING AN OFFSET OUTPUT CURRENT FOR AN INPUT CURRENT AMPLIFIER Public/Granted day:2011-06-23
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