Invention Application
- Patent Title: CONTINUOUS-TIME DELTA-SIGMA ADC WITH SCALABLE SAMPLING RATES AND EXCESS LOOP DELAY COMPENSATION
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Application No.: US15440612Application Date: 2017-02-23
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Publication No.: US20180241409A1Publication Date: 2018-08-23
- Inventor: Elias DAGHER , Yan WANG , Mohammad Meysam ZARGHAM , Dinesh Jagannath ALLADI
- Applicant: QUALCOMM Incorporated
- Main IPC: H03M1/12
- IPC: H03M1/12 ; H03M3/00

Abstract:
Certain aspects of the present disclosure provide methods and apparatus for implementing sampling rate scaling of an excess loop delay (ELD)-compensated continuous-time delta-sigma modulator (CTDSM) analog-to-digital converter (ADC). One example ADC generally includes a loop filter; a quantizer having an input coupled to an output of the loop filter; one or more digital-to-analog converters (DACs), each having an input coupled to an output of the quantizer, an output coupled to an input of the loop filter, and a data latch comprising a clock input for the DAC coupled to a clock input for the ADC; and a clock delay circuit having an input coupled to the clock input for the ADC and an output coupled to a clock input for the quantizer.
Public/Granted literature
- US10243578B2 Continuous-time delta-sigma ADC with scalable sampling rates and excess loop delay compensation Public/Granted day:2019-03-26
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