Invention Grant
- Patent Title: Analog-to-digital converter with an increased resolution first stage
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Application No.: US15676581Application Date: 2017-08-14
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Publication No.: US10200051B2Publication Date: 2019-02-05
- Inventor: Sabu Paul , Raghu Nandan Srinivasa
- 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: H03M1/00
- IPC: H03M1/00 ; H03M1/06 ; H03M1/16

Abstract:
One example includes a pipelined analog-to-digital converter device. The pipelined analog-to-digital converter device includes a capacitive digital-to-analog converter, a first analog-to-digital converter, and a second analog-to-digital converter. The capacitive digital-to-analog converter includes a capacitor comprised of a top plate and a bottom plate, the capacitive digital-to-analog converter sampling an analog input signal applied to the pipelined analog-to-digital converter device while the capacitor is grounded, holding the sampled analog input while the top plate is floated, and outputting a residue voltage. The second analog-to-digital converter is coupled to the top plate of the capacitor, the second analog-to-digital converter producing a second digital representation of voltage on the top plate of the capacitor after the top plate is floated, wherein the second digital representation represents fine bits produced by the first stage of the pipelined analog-to-digital converter device.
Public/Granted literature
- US20180191361A1 ANALOG-TO-DIGITAL CONVERTER WITH AN INCREASED RESOLUTION FIRST STAGE Public/Granted day:2018-07-05
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