Title :
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
fDate :
2/1/2001 12:00:00 AM
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;
Journal_Title :
Solid-State Circuits, IEEE Journal of
