A low-power 416-lag 1.5-b 0.5-TMAC correlator in 0.6-μm CMOS

Author

Edman, Anders ; Christensen, Jacob ; Emrich, Anders ; Svensson, Christer

Author_Institution

SwitchCore AB, Lund, Sweden

Volume

36

Issue

2

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

258

Lastpage

265

Abstract

The autocorrelation spectrometer is an important instrument for radio astronomy. In satellite-based spectrometers, low power consumption is essential. The correlator chip presented in this paper reduces the power consumption more than five times compared to other full-custom designs. This has been achieved by reducing the number of clocked transistors, using a compact layout of cells, which reduces wire lengths, and using parallel processing of data. Also, the low power performance is combined with a large number of lags and a high data throughput. The correlator performs 0.5-TMAC operations in 416 lags at a sample rate of 1.28-GSample/s with an input data precision of 1.5-b and a correlation period of one second. The chip is also designed to reduce noise generation by using multiple internal clock phases

Keywords

CMOS digital integrated circuits; correlators; digital signal processing chips; integrated circuit design; low-power electronics; parallel architectures; radiofrequency spectrometers; timing; 0.6 micron; CMOS low-power correlator chip; DSP chip; autocorrelation spectrometer; compact layout; high data throughput; low power consumption; low power performance; multiple internal clock phases; noise generation reduction; parallel processing; radioastronomy; satellite-based spectrometers; Autocorrelation; Clocks; Correlators; Energy consumption; Instruments; Parallel processing; Radio astronomy; Spectroscopy; Throughput; Wire;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.902766

Filename

902766