Invention Grant
US08791845B2 Circuitry and method for reducing area and power of a pipelince ADC
有权
用于减少流水线ADC的面积和功率的电路和方法
- Patent Title: Circuitry and method for reducing area and power of a pipelince ADC
- Patent Title (中): 用于减少流水线ADC的面积和功率的电路和方法
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Application No.: US13600559Application Date: 2012-08-31
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Publication No.: US08791845B2Publication Date: 2014-07-29
- Inventor: Gautam S. Nandi , Rishubh Khurana
- Applicant: Gautam S. Nandi , Rishubh Khurana
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Alan A. R. Cooper; Frederick J. Telecky, Jr.
- Main IPC: H03M1/06
- IPC: H03M1/06 ; H03M1/10 ; H03M1/12

Abstract:
A pipeline ADC (analog-to-digital converter) (14) includes a residue amplifier (7) for applying a first residue signal (Vres1) to a first input of a residue amplifier (11A) and to an input of a sub-ADC (8) for resolving a predetermined number (m) of bits and producing a redundancy bit in response to the first residue signal. A level-shifting MDAC (9A) converts the predetermined number of bits and the redundancy bit to an analog signal (10) on the a second input of the residue amplifier, which amplifies the difference between the first residue signal and the analog signal to generate a second residue signal (Vres2). The MDAC causes the residue amplifier to shift the second residue signal back within a predetermined voltage range (±Vref/2) by the end of the amplifying if the second residue signal is outside of the predetermined voltage range.
Public/Granted literature
- US20140062736A1 CIRCUITRY AND METHOD FOR REDUCING AREA AND POWER OF A PIPELINE ADC Public/Granted day:2014-03-06
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