Datasheet > AD621ARZ

AD621ARZ

更新时间： 2024-11-18 20:50:15

品牌	Logo	应用领域
亚德诺 - ADI		放大器光电二极管
页数	文件大小	规格书
17页	575K
描述
Low Drift, Low Power Instrumentation Amp with fixed gains of 10 and 100

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AD621ARZ 数据手册

Low Drift, Low Power

Instrumentation Amplifier

AD621

CONNECTION DIAGRAM

8-Lead Plastic Mini-DIP (N), Cerdip (Q)

and SOIC (R) Packages

FEATURES

EASY TO USE

Pin-Strappable Gains of 10 and 100

All Errors Specified for Total System Performance

Higher Performance than Discrete In Amp Designs

Available in 8-Lead DIP and SOIC

Low Power, 1.3 mA Max Supply Current

Wide Power Supply Range (؎2.3 V to ؎18 V)

G = 10/100

–IN

AD621

TOPVIEW

+IN

OUTPUT

REF

(Not to Scale)

–V

EXCELLENT DC PERFORMANCE

0.15% Max, Total Gain Error

gain drift errors are achieved by the use of internal gain setting

resistors. Fixed gains of 10 and 100 can easily be set via external

pin strapping. The AD621 is fully specified as a total system,

therefore, simplifying the design process.

؎5 ppm/؇C, Total Gain Drift

125 ␮V Max, Total Offset Voltage

1.0 ␮V/؇C Max, Offset Voltage Drift

LOW NOISE

9 nV/√Hz, @ 1 kHz, Input Voltage Noise

For portable or remote applications, where power dissipation,

size, and weight are critical, the AD621 features a very low

supply current of 1.3 mA max and is packaged in a compact

8-lead SOIC, 8-lead plastic DIP or 8-lead cerdip. The AD621

also excels in applications requiring high total accuracy, such

as precision data acquisition systems used in weigh scales and

transducer interface circuits. Low maximum error specifications

including nonlinearity of 10 ppm, gain drift of 5 ppm/°C, 50 µV

offset voltage, and 0.6 µV/°C offset drift (“B” grade), make

possible total system performance at a lower cost than has been

previously achieved with discrete designs or with other mono-

lithic instrumentation amplifiers.

0.28 ␮V p-p Noise (0.1 Hz to 10 Hz)

EXCELLENT AC SPECIFICATIONS

800 kHz Bandwidth (G = 10), 200 kHz (G = 100)

12 ␮s Settling Time to 0.01%

APPLICATIONS

Weigh Scales

Transducer Interface and Data Acquisition Systems

Industrial Process Controls

Battery-Powered and Portable Equipment

PRODUCT DESCRIPTION

The AD621 is an easy to use, low cost, low power, high accu-

racy instrumentation amplifier that is ideally suited for a wide

range of applications. Its unique combination of high perfor-

mance, small size and low power, outperforms discrete in amp

implementations. High functionality, low gain errors, and low

When operating from high source impedances, as in ECG and

blood pressure monitors, the AD621 features the ideal combina-

tion of low noise and low input bias currents. Voltage noise is

specified as 9 nV/√Hz at 1 kHz and 0.28 µV p-p from 0.1 Hz to

10 Hz. Input current noise is also extremely low at 0.1 pA/√Hz.

The AD621 outperforms FET input devices with an input bias

current specification of 1.5 nA max over the full industrial tem-

perature range.

30,000

25,000

3 OP AMP

IN AMP

10,000

20,000

15,000

10,000

5,000

(3 OP 07S)

1,000

TYPICAL STANDARD

BIPOLAR INPUT

IN AMP

AD621A

100

AD621 SUPER␤ETA

BIPOLAR INPUT

SUPPLY CURRENT – mA

IN AMP

Figure 1. Three Op Amp IA Designs vs. AD621

0.1

10k

100k

10M

100M

SOURCE RESISTANCE – ⍀

Figure 2. Total Voltage Noise vs. Source Resistance

REV. B

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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AD621ARZ 替代型号

型号	品牌	替代类型	描述	数据表
AD621AR-REEL	ADI	完全替代	IC INSTRUMENTATION AMPLIFIER, 185 uV OFFSET-MAX, 0.2 MHz BAND WIDTH, PDSO8, PLASTIC, SOIC-
AD621BRZ	ADI	类似代替	Low Drift, Low Power Instrumentation Amplifier

与AD621ARZ相关器件

型号	品牌	获取价格	描述	数据表
AD621ARZ-REEL	ADI	获取价格	IC INSTRUMENTATION AMPLIFIER, 185 uV OFFSET-MAX, 0.2 MHz BAND WIDTH, PDSO8, PLASTIC, SOIC-
AD621ARZ-RL	ADI	获取价格	Low Drift, Low Power Instrumentation Amp with fixed gains of 10 and 100
AD621B	ADI	获取价格	Low Drift, Low Power Instrumentation Amplifier
AD621BN	ADI	获取价格	Low Drift, Low Power Instrumentation Amplifier
AD621BNZ	ADI	获取价格	Low Drift, Low Power Instrumentation Amplifier
AD621BR	ADI	获取价格	Low Drift, Low Power Instrumentation Amplifier
AD621BR-REEL	ADI	获取价格	INSTRUMENTATION AMPLIFIER, 215uV OFFSET-MAX, 0.2MHz BAND WIDTH, PDSO8, PLASTIC, SOIC-8
AD621BR-REEL7	ADI	获取价格	Low Drift, Low Power Instrumentation Amp with fixed gains of 10 and 100
AD621BRZ	ADI	获取价格	Low Drift, Low Power Instrumentation Amplifier
AD621BRZ-REEL	ADI	获取价格	IC INSTRUMENTATION AMPLIFIER, 215 uV OFFSET-MAX, 0.2 MHz BAND WIDTH, PDSO8, PLASTIC, SOIC-

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