Invention Grant
- Patent Title: Integrated circuit of an integrator with enhanced stability and related stabilization method
- Patent Title (中): 具有增强稳定性和相关稳定方法的积分器集成电路
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Application No.: US13561355Application Date: 2012-07-30
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Publication No.: US08373488B2Publication Date: 2013-02-12
- Inventor: Maurizio Zuffada , Massimo Pozzoni
- Applicant: Maurizio Zuffada , Massimo Pozzoni
- Applicant Address: IT Agrate Brianza (MB)
- Assignee: STMicroelectronics S.R.L.
- Current Assignee: STMicroelectronics S.R.L.
- Current Assignee Address: IT Agrate Brianza (MB)
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Priority: ITVA2009A0061 20091001
- Main IPC: G06F7/64
- IPC: G06F7/64 ; G06G7/18 ; G06G7/19
Abstract:
An integrated circuit integrator includes a first transconductance amplifier having a gain adjustable based upon a first control signal, and receives, as an input, a signal to be filtered, and generates, as an output, a corresponding amplified signal. The first transconductance amplifier includes an R-C output circuit to filter components from the amplified signal, and an output resistance being adjustable based upon a second control signal. A second transconductance amplifier is matched with the first transconductance amplifier, and has a gain adjustable based upon the first control signal, and a matched output resistance adjustable based upon the second control signal. A circuit is configured to force a reference current through the matched output resistance. An error correction circuit is coupled to the second transconductance amplifier and is configured to generate the second control signal so as to keep constant a voltage on an output of the second transconductance amplifier.
Public/Granted literature
- US20120286870A1 INTEGRATED CIRCUIT OF AN INTEGRATOR WITH ENHANCED STABILITY AND RELATED STABILIZATION METHOD Public/Granted day:2012-11-15
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