Latch-Controlled Current Cell for Low Power Current-Steering D/A Converter

This paper introduces the design and implementation of a novel current cell in current-steering digital-to-analog converter (DAC). The current cell consists of current switch and source which are independently controlled by latch. A sequential switch-on process similar to thermometer decoding is imp...

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Bibliographic Details
Main Authors: Chan-Soo Lee, Jung-Woong Park, Hyung-Gyoo Lee, Nam-Soo Kim, Hai-Feng Jin
Format: Conference Proceeding
Language:English
Subjects:
Arrays
Current cell
DAC
Decoding
latch
Latches
Microprocessors
power consumption
Power demand
Switches
Online Access:Request full text
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Summary:This paper introduces the design and implementation of a novel current cell in current-steering digital-to-analog converter (DAC). The current cell consists of current switch and source which are independently controlled by latch. A sequential switch-on process similar to thermometer decoding is implemented in source to reduce the power consumption. A 12-b DAC has been fabricated using a single-poly four-metal 0.35 μm CMOS process. Comparison with conventional DAC shows that the proposed DAC produces a power reduction in the order of 35% without degradation of linearity.
DOI:10.1109/UKSim.2012.100