參數(shù)資料
型號: XRD98L62ACV
廠商: EXAR CORP
元件分類: 消費(fèi)家電
英文描述: CCD Image Digitizers with CDS, PGA and 12-Bit A/D
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, TQFP-48
文件頁數(shù): 1/37頁
文件大小: 286K
代理商: XRD98L62ACV
EXAR
Corporation, 48720 Kato Road, Fremont, CA 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
XRD98L62
CCD Image Digitizers with
CDS, PGA and 12-Bit A/D
July 2000-4
FEATURES
12-bit Resolution ADC
30MHz Sampling Rate
10-bit Programmable Gain: 0dB to 36dB PGA
Digitally Controlled Offset-Calibration with Pixel
Averager and Hot Pixel Clipper
DNS Filter Removes Black Level Digital Noise
Widest Black Level Calibration Range at
Maximum Gain
1ns/step Programmable Aperture Delay on SPIX,
SBLK and ADCLK
Manual Control of Offset DAC via Serial Port for
use with High-speed Scanners
Single 2.7V to 3.6V Power Supply
Optimize Power with External Resistor to 180mW
View Finder Mode, 6-bit Resolution, 25%
Less Power
Low Power for Battery Operation
APPLICATIONS
Mega pixel Digital Still Cameras
Digital Camcorders
3 CCD Professional/Broadcast Camera
Line Scan Cameras
PC Video Cameras
CCTV/Security Cameras
Industrial/Medical Cameras
2D Bar Code Readers
High Speed Scanners
Digital Copiers
GENERAL DESCRIPTION
The XRD98L62 is a complete, low power CCD Image
Digitizer for digital motion and still cameras. The
product includes a high bandwidth differential Corre-
lated Double Sampler (CDS), 10-bit digitally Program-
mable Gain Amplifier (PGA), 12-bit Analog-to-Digital
Converter (ADC) and improved digitally controlled
black level auto-calibration circuitry with program-
mable pixel averager, hot pixel clipper, and a DNS
filter.
Two 8-bit serial controlled digital-to-analog converter
(DACs) are provided to control external analog signals
(Iris, Focus, Flash, etc.)
The Correlated Double Sampler (CDS) subtracts the
CCD output signal black level from the video level.
Common mode signal and power supply noise are
rejected by the differential CDS input stage.
The PGA is digitally controlled with 10-bit resolution on
a linear dB scale, resulting in a gain range of 0dB to
36dB with 0.047dB per LSB of the gain code.
The auto calibration circuit compensates for any inter-
nal offset of the XRD98L62 as well as black level offset
from the CCD.
The PGA and black level auto-calibration are con-
trolled through a simple 3-wire serial interface. The
timing circuitry is designed to enable users to select a
wide variety of available CCD and image sensors for
their applications. Readback of the serial data regis-
ters is available from the digital output bus.
The XRD98L62 has direct access to the ADC and PGA
inputs for digitizing other analog signals.
The XRD98L62 is packaged in 48-lead TQFP to reduce
space and weight, and is suitable for hand-held and
portable applications.
Rev. P2.00
Two Serial Controlled 8-bit D/A Converters
0.5mA Stand-by Mode Current
Three-state Digital Outputs
2,000V ESD Protection
48-pin TQFP Package
Preliminary
ORDERING INFORMATION
Operating
Power Supply
3.0V
Maximum
Sampling Rate
30 MSPS
Part No.
XRD98L62ACV
Package
48-Pin TQFP
Temperature Range
-15°C to 70°C
相關(guān)PDF資料
PDF描述
XRD98L62 CCD Image Digitizers with CDA,PGS and 12-Bit A/D(CCD圖像數(shù)字轉(zhuǎn)換器(帶CDA,PGS和12位A/D轉(zhuǎn)換器))
XRDAN28 Frequency Response Effects of Overampling and Averaging on A/D Output Data
XRDAN29 Criteria for Accurate Sampling of Analog Signals
XRDAN30 CMOS Current Output D/A Converter Design Concepts for Wide Bandwidth Applications
XRK32308_07 3.3V ZERO DELAY BUFFER
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