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AD85531

更新时间： 2024-11-20 04:31:07
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器
页数 文件大小 规格书
10页 217K
描述
10 MHz, 20 V/レs, G = 1, 10, 100, 1000 i CMOS㈢ Programmable Gain Instrumentation Amplifier

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10 MHz, 20 V/μs, G = 1, 10, 100, 1000 iCMOS®  
Programmable Gain Instrumentation Amplifier  
Preliminary Technical Data  
AD8253  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
DGD  
Small package: 10-lead MSOP  
WR  
A1  
A0  
Programmable gains: 1, 10, 100, 1000  
Digital or pin-programmable gain setting  
Wide supply: 5 V to 15 V  
Logic  
-IN  
Excellent dc performance  
High CMRR 120 dB , G = 100  
Low gain drift: 10 ppm/°C  
Low offset drift: 1.2 μV/°C , G = 1000  
Excellent ac performance  
Fast settling time: 615 ns to 0.001%  
High slew rate: 20 V/ꢀs  
OUT  
+IN  
AD8253  
+VS  
-VS  
REF  
Low distortion:  
Figure 1.  
High CMRR over frequency: 80 dB to 50 kHz  
Low noise: 8 nV/√Hz, G = 1000  
Low power: 4 mA  
Table 1. Instrumentation and Difference Amplifiers by  
Category  
APPLICATIONS  
High  
Low  
High  
Mil  
Low  
Digital  
Gain  
Data acquisition  
Biomedical analysis  
Test and measurement  
Performance Cost  
Voltage Grade Power  
AD82201  
AD8221  
AD8222  
AD82241  
AD6231  
AD85531  
AD6271 AD82311  
AD628  
AD629  
AD620  
AD621  
AD524  
AD526  
AD624  
AD8250  
GENERAL DESCRIPTION  
AD8251  
AD85551  
AD85561  
AD85571  
The AD8253 is an instrumentation amplifier with digitally  
programmable gains that has GΩ input impedance, low output  
noise, and low distortion making it suitable for interfacing with  
sensors and driving high sample rate analog-to-digital converters  
(ADCs). It has high bandwidth of 10 MHz, low THD and fast  
settling time of 615 ns to 0.001%. Offset drift and gain drift are  
specified to 1.2 μV/°C and 10 ppm/°C, respectively for G = 1000.  
In addition to its wide input common voltage range, it boasts a  
high common-mode rejection of 80 dB at G = 1 from dc to  
50 kHz. The combination of precision dc performance coupled  
with high speed capabilities make the AD8253 an excellent  
candidate for data acquisition. Furthermore, this monolithic  
solution simplifies design and manufacturing, and boosts  
performance of instrumentation by maintaining a tight match  
of internal resistors and amplifiers.  
1 Rail-to-rail output.  
The AD8253 is available in a 10-lead MSOP package and is  
specified over the −40°C to +85°C temperature range, making it  
an excellent solution for applications where size and packing  
density are important considerations.  
The AD8253 user interface consists of a parallel port that allows  
users to set the gain in one of two different ways (see Figure 1  
for the functional block diagram). A 2-bit word sent via a bus  
WR  
can be latched using the  
input. An alternative is to use  
transparent gain mode where the state of logic levels at the gain  
port determines the gain.  
Rev. prA  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
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