Invention Grant
- Patent Title: Complementary switches in current switching digital to analog converters
- Patent Title (中): 电流开关数模转换器中的互补开关
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Application No.: US14135198Application Date: 2013-12-19
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Publication No.: US09118346B2Publication Date: 2015-08-25
- Inventor: Matthew Louis Courcy , Martin Clara , Gabriele Manganaro , Gil Engel , Lawrence A. Singer
- Applicant: ANALOG DEVICES, INC.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Patent Capital Group
- Main IPC: H03M1/66
- IPC: H03M1/66 ; H03M1/74

Abstract:
The present disclosure provides embodiments of an improved current steering switching element for use in a digital to analog (DAC) converter. Typically, each current steering switching element in the DAC converter provides a varying set of currents for converting a digital input signal. Generally, the switches and drivers in the current steering switching elements are scaled down proportionally to the current being provided by the current steering switching element according to a ratio as less and less current is being driven by the switching element in order to overcome timing errors. However, device sizes are limited by the production process. When a switch is not scaled proportionally to the current, settling timing errors are present and affects the performance of the DAC. The improved current steering switching element alleviates this issue of timing errors by replacing the single switch with two complementary current steering switches.
Public/Granted literature
- US20150180501A1 COMPLEMENTARY SWITCHES IN CURRENT SWITCHING DIGITAL TO ANALOG CONVERTERS Public/Granted day:2015-06-25
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