A 4-bit 1.356 Gsps ADC Using Current Processing Method

Author

Koo, Ja-Hyun ; Kim, Yun-Jeong ; Park, Bong-Hyuck ; Choi, Sang-Seong ; Lim, Shin-Il ; Kim, Suki

Author_Institution

Dept. of Electron. Eng., Korea Univ., Seoul

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

343

Lastpage

346

Abstract

In this paper, a 4-bit 1.356GS/S analog to digital (A/D) converter using current pre-processing (CMA, DSA) is presented. To achieve low power consumption and high conversion rate, the proposed converter is designed with current mode amplifier (CMA) and each preamplifier includes a dual sense amplifier (DSA). The A/D converter can sample input frequencies above 650MHz with this current mode processing technique. The A/D converter achieves 3.7 effective number of bits (ENOBs) for a 30MHz sinusoidal input and 3.35 ENOBs for a 650MHz input at a 1.356 GHz sampling rate. At 1.356GS/S, the current consumption is 38mA including digital logic with a power supply of 1.8V. The proposed A/D converter is fabricated using a 0.18-mum 6Metal Poly CMOS process and the active area is 0.35mm²

Keywords

analogue-digital conversion; current-mode circuits; low-power electronics; preamplifiers; 0.18 micron; 1.356 GHz; 1.8 V; 30 MHz; 38 mA; 650 muHz; ADC; CMA; DSA; ENOB; current mode amplifier; current pre processing; digital logic; dual sense amplifier; effective number of bits; high conversion rate; low power consumption; Analog-digital conversion; Bandwidth; Encoding; Energy consumption; Frequency conversion; High power amplifiers; Logic; Sampling methods; Tail; Voltage; ADC; Current Mode;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342440

Filename

4145401