Invention Grant
- Patent Title: Methods and apparatus for reducing noise, power and settling time in multi-modal analog multiplexed data acquisition systems
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Application No.: US15084052Application Date: 2016-03-29
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Publication No.: US09667289B2Publication Date: 2017-05-30
- Inventor: Arup Polley , Ajit Sharma , Seung Bae Lee , Sriram Narayanan , Srinath Ramaswamy
- 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: H04L27/06
- IPC: H04L27/06 ; H04B1/10

Abstract:
Reduced noise and power with rapid settling time and increased performance in multi-modal analog multiplexed data acquisition systems. An example apparatus arrangement includes a circuit input configured to receive a plurality of analog input signals; an analog to digital converter circuit configured to output a digital representation of an analog voltage; a selection circuit configured to select one of the analog input signals received at the circuit input; a buffer coupled to receive the selected one of the analog input signals; a filter coupled to the buffer and configured to perform a high bandwidth sample operation and a low bandwidth sample operation and having a filter output, responsive to a control signal; and a sampling capacitor coupled to the filter to sample the filter output, and having an output coupled to the analog to digital converter. Methods and additional apparatus arrangements are disclosed.
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