Comparison of 5-bit Thermometer-to-Binary Decoders in 1.8V, 0.18µm CMOS Technology for Flash ADCs

Thermometer-to-binary decoders have become the bottleneck in Flash analog-to-digital converters. This paper describes five different 5-bit thermometer-to-binary decoders which are suitable for flash analog-to-digital converter in 1.8 V, 0.18 mum CMOS technology. Comparative study between these therm...

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Bibliographic Details
Main Authors: Madhumati, G.L., Rao, K.R., Madhavilatha, M.
Format: Conference Proceeding
Language:English
Subjects:
Analog-digital conversion
Binary codes
CMOS technology
Decoding
Delay
Energy consumption
Fat-tree
Flash ADC
Gray-ROM
Read only memory
Resistors
ROM
TC-to-BC Decoder
Temperature
Voltage
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Description
Summary:Thermometer-to-binary decoders have become the bottleneck in Flash analog-to-digital converters. This paper describes five different 5-bit thermometer-to-binary decoders which are suitable for flash analog-to-digital converter in 1.8 V, 0.18 mum CMOS technology. Comparative study between these thermometer-to-binary decoders is done based on power consumption, count of transistors and delay. The combination of medium power, low transistor count, more regular structure and shorter critical path makes the multiplexer-based decoder is a viable option for efficient Flash ADC design.
DOI:10.1109/ICSPS.2009.160