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ADS7844EB 参数 Datasheet PDF下载

ADS7844EB图片预览
型号: ADS7844EB
PDF下载: 下载PDF文件 查看货源
内容描述: 12位8通道串行输出采样模拟数字转换器 [12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER]
分类和应用: 转换器模数转换器光电二极管
文件页数/大小: 14 页 / 205 K
品牌: BURR-BROWN [ BURR-BROWN CORPORATION ]
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®
ADS
784
4
ADS7844
ADS
7
844
12-Bit, 8-Channel Serial Output Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q
SINGLE SUPPLY: 2.7V to 5V
q
8-CHANNEL SINGLE-ENDED OR
4-CHANNEL DIFFERENTIAL INPUT
q
UP TO 200kHz CONVERSION RATE
q
±
1 LSB MAX INL AND DNL
q
GUARANTEED NO MISSING CODES
q
72dB SINAD
q
SERIAL INTERFACE
q
20-LEAD QSOP AND
20-LEAD SSOP PACKAGES
q
ALTERNATE SOURCE FOR MAX147
DESCRIPTION
The ADS7844 is an 8-channel, 12-bit sampling ana-
log-to-digital converter (ADC) with a synchronous
serial interface. Typical power dissipation is 3mW at
a 200kHz throughput rate and a +5V supply. The
reference voltage (V
REF
) can be varied between 100mV
and V
CC
, providing a corresponding input voltage
range of 0V to V
REF
. The device includes a shutdown
mode which reduces power dissipation to under 1µW.
The ADS7844 is guaranteed down to 2.7V operation.
Low power, high speed, and on-board multiplexer
make the ADS7844 ideal for battery operated systems
such as personal digital assistants, portable multi-
channel data loggers, and measurement equipment.
The serial interface also provides low-cost isolation
for remote data acquisition. The ADS7844 is available
in a 20-lead QSOP package and the MAX147 equiva-
lent 20-lead SSOP package and is guaranteed over the
–40°C to +85°C temperature range.
APPLICATIONS
q
DATA ACQUISITION
q
TEST AND MEASUREMENT
q
INDUSTRIAL PROCESS CONTROL
q
PERSONAL DIGITAL ASSISTANTS
q
BATTERY-POWERED SYSTEMS
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
V
REF
CDAC
Eight
Channel
Multiplexer
CS
Comparator
Serial
Interface
and
Control
SHDN
DIN
DOUT
BUSY
SAR
DCLK
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1998 Burr-Brown Corporation
PDS-1463D
Printed in U.S.A. July, 1999