A Low-Power 4GHz Comparator in 120nm CMOS Technology with a Technique to tune Resolution

Author

Goll, Bernhard ; Zimmermann, Horst

Author_Institution

Inst. of Electr. Measurements & Circuit Design, Vienna Univ. of Technol.

fYear

2006

fDate

19-21 Sept. 2006

Firstpage

320

Lastpage

323

Abstract

This paper presents a comparator with the capability of a high decision speed, but static power consumption was avoided. Furthermore the circuit implements a technique to enhance resolution while keeping the ability of a high switching speed. During the reset phase the comparator is pulled to ground level, which defines a logic voltage level. A test chip with the comparator was manufactured in a 120nm CMOS technology with a supply-voltage of 1.5V. For a bit-error-rate (BER) of 10^-9 the presented comparator is able to detect 11.2mV at 2GHz, 20mV at 3GHz, 26mV at 3.5GHz and 118mV at 4GHz. The power consumption was 788muW at 3.5GHz and 812muW at 4GHz

Keywords

CMOS integrated circuits; analogue-digital conversion; comparators (circuits); low-power electronics; 1.5 V; 11.2 mV; 118 mV; 120 nm; 2 GHz; 20 mV; 26 mV; 3 GHz; 3.5 GHz; 4 GHz; 788 muW; 812 muW; CMOS technology; high switching speed; logic voltage level; low-power comparator; resolution enhancement; CMOS technology; Circuits; Energy consumption; Inverters; Latches; Paper technology; Power supplies; Switches; Variable structure systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European

Conference_Location

Montreux

ISSN

1930-8833

Print_ISBN

1-4244-0303-0

Type

conf

DOI

10.1109/ESSCIR.2006.307595

Filename

4099768