AD8224

更新时间： 2024-11-03 04:30:59

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
27页	1382K
描述
Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier

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AD8224 数据手册

Precision, Dual-Channel, JFET Input

Rail-to-Rail Instrumentation Amplifier

Preliminary Technical Data

AD8224

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Two channels in a small 4 mm × 4 mm LFCSP

Low input currents

16 15 14 13

10 pA maximum input bias current (B grade)

0.6 pA maximum input offset current (B grade)

High CMRR

100 dB CMRR (minimum), G = 10 (B grade)

80 dB CMRR (minimum) to 5 kHz, G = 1 (B grade)

Excellent ac specifications and low power

1.5 MHz bandwidth (G = 1)

AD8224

–IN1

RG1

+IN1

–IN2

RG2

+IN2

14 nV/√Hz input noise (1 kHz)

Slew rate 2 V/μs

750 μA quiescent supply current per amplifier (maximum)

Versatility

Figure 1. 4mm × 4 mm LFCSP

Rail-to-rail output

Table 1. In Amps and Difference Amplifiers by Category

Input voltage range to below negative supply rail

4 kV ESD protection

4.5 V to 36 V single supply

2.25 V to 18 V dual supply

Gain set with single resistor (G = 1 to 1000)

High

Perform. Cost

Low

High

Volt.

Mil

Low

Digital

Gain

Grade Power

AD8220¹

AD8221

AD8222

AD8224¹

AD8553¹AD628 AD620 AD627¹AD8555¹

AD623¹

AD629 AD621

AD524

AD8556¹

AD8557¹

AD526

APPLICATIONS

AD624

Medical instrumentation

Precision data acquisition

Transducer interface

Differential drive for

High resolution input ADCs

Remote sensors

¹Rail-to-rail output.

GENERAL DESCRIPTION

The AD8224 is the first single-supply junction field effect

transistor (JFET) input instrumentation amplifier available in

the space-saving 16-lead, 4 mm×4 mm LFCSP. It requires the

same board area as a typical single instrumentation amplifier,

yet doubles the channel density and offers a lower cost per

channel without compromising performance.

Designed to alleviate this problem, the AD8224 can operate on a

18 V dual supply, as well as on a single +5 V supply. The device’s

rail-to-rail output stage maximizes dynamic range on the low

voltage supplies common in portable applications. Its ability to run

on a single 5 V supply eliminates the need for higher voltage, dual

supplies. The AD8224 draws a maximum of 750 μA of quiescent

current per amplifier, making it ideal for battery-powered devices.

Designed to meet the needs of high performance, portable

instrumentation, the AD8224 has a minimum common-mode

rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR

of 80 dB at 5 kHz for G = 1. Maximum input bias current is

10 pA and typically remains below 300 pA over the entire

industrial temperature range. Despite the JFET inputs, the

AD8224 typically has a noise corner of only 10 Hz.

In addition, the AD8224 can be configured as a single-channel,

differential output instrumentation amplifier. Differential

outputs provide high noise immunity, which can be useful when

the output signal must travel through a noisy environment, such

as with remote sensors. The configuration can also be used to

drive differential input ADCs.

With the proliferation of mixed-signal processing, the number of

power supplies required in each system has grown.

For a single-channel version, use the AD8220 device.

Rev. PrB

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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与AD8224相关器件

型号	品牌	获取价格	描述	数据表
AD8224_07	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD82241	ADI	获取价格	10 MHz, 20 V/レs, G = 1, 10, 100, 1000 i CMOS㈢
AD8224ACPZ-R7	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224ACPZ-RL	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224ACPZ-WP	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224BCPZ-R7	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224BCPZ-RL	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224BCPZ-WP	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224-EVALZ	ADI	获取价格	Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
AD8224HACPZ-R7	ADI	获取价格	Precision, Dual-Channel, JFET Input, Rail-to-Rail Instrumentation Amplifier

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