Invention Grant
US08760331B2 Continuous time delta sigma converter having a VCO based quantizer
有权
具有基于VCO的量化器的连续时间ΔΣ转换器
- Patent Title: Continuous time delta sigma converter having a VCO based quantizer
- Patent Title (中): 具有基于VCO的量化器的连续时间ΔΣ转换器
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Application No.: US13542691Application Date: 2012-07-06
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Publication No.: US08760331B2Publication Date: 2014-06-24
- Inventor: Rune Kaald
- Applicant: Rune Kaald
- Applicant Address: NO Tiller
- Assignee: Hittite Microwave Norway AS
- Current Assignee: Hittite Microwave Norway AS
- Current Assignee Address: NO Tiller
- Agency: Iandiorio Teska & Coleman, LLP
- Main IPC: H03M3/00
- IPC: H03M3/00

Abstract:
A continuous-time delta sigma converter includes a loop filter having a plurality of serially coupled integrators including a first integrator responsive to an input of the Delta Sigma converter and a last integrator responsive to a first feedback loop and providing an integrated output signal, and a voltage controlled oscillator (VCO) based quantizer responsive to the loop filter for integrating the integrated output signal and providing a digital output signal. The first feedback loop includes a first time delay circuit responsive to the output of the quantizer and at least one switched capacitor digital to analog converter (DAC) responsive to the first time delay circuit. The first feedback loop is configured to differentiate the digital output signal twice and provide the last integrator of the loop filter with a double differentiated analog signal to reduce excess loop delay.
Public/Granted literature
- US20130187803A1 Continuous Time Delta Sigma Converter Having A VCO Based Quantizer Public/Granted day:2013-07-25
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