Invention Grant
- Patent Title: System and method for pulse width modulation digital-to-analog converter
- Patent Title (中): 脉宽调制数模转换器的系统和方法
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Application No.: US13685178Application Date: 2012-11-26
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Publication No.: US08773297B2Publication Date: 2014-07-08
- Inventor: Martin Kinyua , Eric Soenen
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: H03M1/66
- IPC: H03M1/66

Abstract:
A system and method is disclosed for a digital to analog converter which includes an interpolation filter to up-sample a digital signal, a noise shaping modulator to suppress in-band quantization errors due to digital pulse width modulation and truncation errors, and a hybrid finite impulse response filter/digital to analog converter coupled to a reconstruction filter which outputs the analog signal. The hybrid finite impulse response filter/digital to analog converter uses N-taps implemented digitally and N-tap weights implemented in analog using switched capacitors.
Public/Granted literature
- US20140062748A1 SYSTEM AND METHOD FOR PULSE WIDTH MODULATION DIGITAL-TO-ANALOG CONVERTER Public/Granted day:2014-03-06
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