Invention Grant
- Patent Title: Parallel sample-and-hold circuit for a pipelined ADC
- Patent Title (中): 用于流水线ADC的并行采样和保持电路
-
Application No.: US14565017Application Date: 2014-12-09
-
Publication No.: US09362940B2Publication Date: 2016-06-07
- Inventor: Jan Mulder
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H03M1/00
- IPC: H03M1/00 ; H03M1/46 ; G11C27/02

Abstract:
A parallel sample-and-hold circuit includes a sampling switch and a hold capacitor for each of the ADC and MDAC of a converter stage for a pipelined ADC. Each sampling switch couples the analog input of the first converter stage to its hold capacitor at the time a sample is desired to be taken. After the sample is placed on the hold capacitor, the sampling switch is opened and the hold capacitor stores the sample. To compensate for mismatches in the signal paths of these sample-and-hold circuits, a compensation switch is further used. The compensation switch couples the terminals of the hold capacitors together, creating a parallel sample-and-hold circuit. The compensation switch is controlled such that it is closed after the sampling switches are opened to equalize a voltage of the samples.
Public/Granted literature
- US20160105195A1 Parallel Sample-and-Hold Circuit for a Pipelined ADC Public/Granted day:2016-04-14
Information query