Invention Grant
- Patent Title: Continuous-time delta-sigma ADC with scalable sampling rates and excess loop delay compensation
-
Application No.: US15440612Application Date: 2017-02-23
-
Publication No.: US10243578B2Publication Date: 2019-03-26
- Inventor: Elias Dagher , Yan Wang , Mohammad Meysam Zargham , Dinesh Jagannath Alladi
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: H03M3/00
- IPC: H03M3/00 ; H03M1/12

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
- US20180241409A1 CONTINUOUS-TIME DELTA-SIGMA ADC WITH SCALABLE SAMPLING RATES AND EXCESS LOOP DELAY COMPENSATION Public/Granted day:2018-08-23
Information query