Invention Grant
- Patent Title: Tri-level digital-to-analog converter
- Patent Title (中): 三电平数模转换器
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Application No.: US14633888Application Date: 2015-02-27
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Publication No.: US09172393B2Publication Date: 2015-10-27
- Inventor: David Stoops , Min Gyu Kim , Vinod Jayakumar
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Fiala & Weaver P.L.L.C.
- Main IPC: H03M3/00
- IPC: H03M3/00

Abstract:
Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.
Public/Granted literature
- US20150171891A1 TRI-LEVEL DIGITAL-TO-ANALOG CONVERTER Public/Granted day:2015-06-18
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