Invention Grant
- Patent Title: Low power switched capacitor integrator, analog-to-digital converter and switched capacitor amplifier
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Application No.: US15593618Application Date: 2017-05-12
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Publication No.: US09866237B1Publication Date: 2018-01-09
- Inventor: Rajavelu Thinakaran , Sumit Dubey
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Main IPC: H03M3/00
- IPC: H03M3/00 ; H03H19/00 ; H03M1/12

Abstract:
Disclosed examples include switched capacitor integrator circuits including an amplifier, a feedback capacitor, a sampling capacitor, a loading capacitor and a switching circuit, along with a controller that operates the switching circuit to sample an input signal to the sampling capacitor during a sample portion of a given sample and hold cycle, to couple the sampling capacitor to an amplifier input during a first hold portion of each sample and hold cycle, and to couple the sampling capacitor and the loading capacitor to the amplifier input in a second hold portion of each sample and hold cycle to reduce the bandwidth and power consumption by the integrator circuit.
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