CRD5376 Datasheet, PDF (1/68 Pages) Cirrus Logic – Multichannel Seismic Reference Design

CRD5376
Multichannel Seismic Reference Design
Features
z Four Channel Seismic Acquisition Node
– CS3301 geophone amplifiers (2x)
– CS3302 hydrophone amplifiers (2x)
– CS5372 dual ∆Σ modulators (2x)
– CS5376A quad digital filter (1x)
– CS4373A ∆Σ test DAC (1x)
– Precision voltage reference
– Clock recovery PLL
z On-board Microcontroller
– SPI™ interface to digital filter
– USB communication with PC
z PC Evaluation Software
– Register setup & control
– FFT frequency analysis
– Time domain analysis
– Noise histogram analysis
General Description
The CRD5376 board is a reference design for the Cirrus
Logic multichannel seismic chip set. Data sheets for the
CS3301, CS3302, CS4373A, CS5371/72, and CS5376A
devices should be consulted when using the CRD5376
reference design.
Pin headers connect external differential geophone or
hydrophone sensors to the analog inputs of the mea-
surement channels. An on-board test DAC creates
precision differential analog signals for in-circuit perfor-
mance testing without an external signal source.
The reference design includes an 8051-type microcon-
troller with hardware SPI™ and USB serial interfaces.
The microcontroller communicates with the digital filter
via SPI and with the PC evaluation software via USB.
The PC evaluation software controls register and coeffi-
cient initialization and performs time domain, histogram,
and FFT frequency analysis on captured data.
ORDERING INFORMATION
CRD5376
Reference Design
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Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
FEB ‘06
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