CS7620 Datasheet, PDF (1/70 Pages) Cirrus Logic – CCD IMAGER ANALOG PROCESSOR

CS7620
CCD Imager Analog Processor
Features
Description
l 13-Bit A/D Conversion Using DRX™
Technology
l Backlight Compensation
l Supports three Input Ranges of 0.53V,
1.07V, and 1.60V
l Multi-Sync CCD Timing Generator
l High Resolution Output Mode
l Low Resolution (Preview) Output Mode for
LCD Driver
l Integrated Correlated Double Sampler
l Digital Black Level Clamp
l Digital Outputs Selectable for 13, 12, or 10 Bits
l Two Integrated General Purpose DACs
l Low Power Consumption
l Power Down Mode
l High Speed Serial Interface
l Supports a Large Variety of Clock Input
Frequencies
l Low power mode option
The CS7620 is a low-power analog front-end processor
for interline or frame transfer CCD imagers. Main appli-
cations include digital still image cameras with up to
8k×8k pixels.
The architecture includes a correlated double sampler,
black level clamp and a 13-bit A/D conversion module
using patented DRX technology. In addition, the chip
contains a timing generator, which supports common
CCDs from IBM, and Polaroid. For CCDs using different
timing signals, the internal timing generator can be
bypassed.
There are 2 general purpose DACs available which can
be used to drive motors for iris and shutter control.
Chip parameters can be programmed using a high
speed 4-wire asynchronous digital interface.
The chip outputs digitized CCD data in either 13-bit, 12-
bit or 10-bit format. 10-bit outputs are generated from the
13-bit A/D output by a programmable companding curve.
ORDERING INFORMATION
CS7620-IQ -40 to +85 °C 64-pin TQFP
10x10x1.4mm
CCD OUTPUT
CDS/DRX
GAIN
DAC
OUTPUTS
2 DACS
MASTER
PLL
CLOCK
A/D
CONVERTER
BLACK
LEVEL
TIMING
GENERATOR
OUTPUT
COMPANDER
CLOCK
REGISTER
BLOCK
DATA OUT
CLOCK OUT
SERIAL
INTERFACE
CCD TIMING SIGNALS
SERIAL BUS
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
JUL ‘99
DS301PP2
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