Invention Grant
US08258863B2 Circuit and method for reducing input leakage in chopped amplifier during overload conditions
有权
在过载条件下减少斩波放大器输入漏电的电路和方法
- Patent Title: Circuit and method for reducing input leakage in chopped amplifier during overload conditions
- Patent Title (中): 在过载条件下减少斩波放大器输入漏电的电路和方法
-
Application No.: US12930366Application Date: 2011-01-05
-
Publication No.: US08258863B2Publication Date: 2012-09-04
- Inventor: Amit K. Gupta , Karthikeyan Soundarapandian
- Applicant: Amit K. Gupta , Karthikeyan Soundarapandian
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John J. Patti; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: H03F1/02
- IPC: H03F1/02
Abstract:
A chopper-stabilized amplifier (20A) includes an amplifier (3), an input chopper (2A) having a first input (4) receiving an input signal (VIN+), an output (5) coupled to a first input of the amplifier, and a feedback resistor (9) coupled to an output (6) of the amplifier to couple a feedback signal (VFB+) to a second input of the amplifier (3). The input chopper operates in response to a chopping clock (CHOP_CLK). If the amplifier (3) is unacceptably close to a saturation condition, the chopping clock (CHOP_CLK) is disabled to reduce input leakage current (ILEAKAGE) of the chopper-stabilized amplifier.
Public/Granted literature
- US20120169416A1 CIRCUIT AND METHOD FOR REDUCING INPUT LEAKAGE IN CHOPPED AMPLIFIER DURING OVERLOAD CONDITIONS Public/Granted day:2012-07-05
Information query
IPC分类:
