AD526

更新时间： 2024-11-04 06:36:11

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/μs, G = 1, 10, 100, 1000 i CMOS® 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

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

AD627¹AD8231¹

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.

¹Rail-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

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

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