Design of an 8-bit 100 KSPS 1 mW CMOS A/D converter for digital mobile communication

Author

Lee, Jungeun ; Song, Minkyu

Author_Institution

Dept. of Semicond. Sci., Dongguk Univ., Seoul, South Korea

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

178

Lastpage

185

Abstract

In this paper, an 8-bit 100 KSPS 1 mW CMOS A/D converter for digital mobile communication is proposed. The main architecture of the A/D converter is based on a cyclic type, in order to reduce power consumption. This is composed of a proposed Sample and Hold Amplifier (SHA), fully differential gain amplifier and comparator. As the proposed SHA is driven by an offset cancellation clock to reduce offset voltage, the input voltage is held accurately. The proposed fully differential gain amplifier employs a half magnitude of the input capacitance compared to that of the conventional one. Thus both the input capacitance and feedback capacitance have the same value. The A/D converter is fabricated with a 0.6 μm single-poly triple-metal n-well CMOS technology and has a power consumption of 980 μW at 3 V power supply. Further, the INL and DNL are within ±1 LSB and SNR is about 45 dB

Keywords

CMOS integrated circuits; analogue-digital conversion; capacitance; digital radio; low-power electronics; mobile radio; radio equipment; 0.6 micron; 3 V; 45 dB; 8 bit; 980 muW to 1 mW; CMOS A/D converter; CMOS ADC; DNL; INL; comparator; cyclic type architecture; digital mobile communication; feedback capacitance; fully differential gain amplifier; input capacitance; n-well CMOS technology; offset cancellation clock; offset voltage reduction; power consumption reduction; sample/hold amplifier; single-poly triple-metal process; Analog circuits; Analog-digital conversion; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS technology; Capacitance; Differential amplifiers; Energy consumption; Mobile communication; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-5705-1

Type

conf

DOI

10.1109/APASIC.1999.824058

Filename

824058