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ADS7822U 参数 Datasheet PDF下载

ADS7822U图片预览
型号: ADS7822U
PDF下载: 下载PDF文件 查看货源
内容描述: 12位,高速, 2.7V微功耗采样模拟数字转换器 [12-Bit, High-Speed, 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER]
分类和应用: 转换器光电二极管
文件页数/大小: 20 页 / 430 K
品牌: TI [ TEXAS INSTRUMENTS ]
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ADS7822
ADS
782
2
OP
S7822
A65
8
AD
SBAS062A – JANUARY 1996 – REVISED MARCH 2005
12-Bit, High-Speed, 2.7V
microPower
Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q
75kHz SAMPLING RATE
q
MICRO POWER:
0.54mW at 75kHz
0.06mW at 7.5kHz
q
POWER DOWN: 3
µ
A max
q
MINI-DIP-8, SOIC-8, AND MSOP-8
q
PSEUDO-DIFFERENTIAL INPUT
q
SERIAL INTERFACE
DESCRIPTION
The ADS7822 is a 12-bit sampling analog-to-digital (A/D)
converter with ensured specifications over a 2.7V to 5.25V
supply range. It requires very little power even when oper-
ating at the full 75kHz rate. At lower conversion rates, the
high speed of the device enables it to spend most of its time
in the power-down mode—the power dissipation is less than
60µW at 7.5kHz.
The ADS7822 also features operation from 2.0V to 5V, a
synchronous serial interface, and a pseudo-differential input.
The reference voltage can be set to any level within the
range of 50mV to V
CC
.
Ultra low power and small size make the ADS7822 ideal for
battery-operated systems. It is also a perfect fit for remote
data acquisition modules, simultaneous multi-channel sys-
tems, and isolated data acquisition. The ADS7822 is avail-
able in a plastic mini-DIP-8, an SOIC-8, or an MSOP-8
package.
APPLICATIONS
q
q
q
q
BATTERY-OPERATED SYSTEMS
REMOTE DATA ACQUISITION
ISOLATED DATA ACQUISITION
SIMULTANEOUS SAMPLING,
MULTI-CHANNEL SYSTEMS
SAR
Control
V
REF
D
OUT
+In
CDAC
–In
S/H Amp
Comparator
Serial
Interface
DCLOCK
CS/SHDN
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1996-2005, Texas Instruments Incorporated
www.ti.com