AD8421ARZ

更新时间： 2024-01-28 08:02:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	656K
描述
3 nV/√Hz, Low Power

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

AD8421ARZ 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	DIE-11
针数：	0	Reach Compliance Code：	compliant
风险等级：	5.63	放大器类型：	INSTRUMENTATION AMPLIFIER
最大平均偏置电流 (IIB)：	0.008 µA	标称带宽 (3dB)：	10 MHz
最小共模抑制比：	80 dB	最大输入失调电流 (IIO)：	0.003 µA
最大输入失调电压：	135 µV	JESD-30 代码：	R-XUUC-N11
长度：	2.125 mm	负供电电压上限：	-18 V
标称负供电电压 (Vsup)：	-15 V	最大非线性：	0.005%
功能数量：	1	端子数量：	11
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	RECTANGULAR	封装形式：	UNCASED CHIP
座面最大高度：	0.3048 mm	标称压摆率：	35 V/us
子类别：	Instrumentation Amplifier	供电电压上限：	18 V
标称供电电压 (Vsup)：	15 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	NO LEAD
端子位置：	UPPER	最大电压增益：	10000
最小电压增益：	1	标称电压增益：	10
宽度：	1.555 mm	Base Number Matches：	1

AD8421ARZ 数据手册

3 nV/√Hz, Low Power

Instrumentation Amplifier

AD8421

Data Sheet

FEATURES

PIN CONNECTION DIAGRAM

Low power

2.3 mA maximum supply current

Low noise

3.2 nV/√Hz maximum input voltage noise at 1 kHz

200 fA/√Hz current noise at 1 kHz

Excellent ac specifications

AD8421

–IN

OUT

REF

–V

+IN

TOP VIEW

(Not to Scale)

10 MHz bandwidth (G = 1)

2 MHz bandwidth (G = 100)

Figure 1.

0.6 μs settling time to 0.001% (G = 10)

80 dB CMRR at 20 kHz (G = 1)

35 V/μs slew rate

High precision dc performance (AD8421BRZ)

94 dB CMRR minimum (G = 1)

10µ

1µ

G = 100

0.2 μV/°C maximum input offset voltage drift

1 ppm/°C maximum gain drift (G = 1)

500 pA maximum input bias current

Inputs protected to 40 V from opposite supply

2.5 V to 18 V dual supply (5 V to 36 V single supply)

Gain set with a single resistor (G = 1 to 10,000)

BEST AVAILABLE

7mA LOW NOISE IN-AMP

100n

10n

APPLICATIONS

BEST AVAILABLE

1mA LOW POWER IN-AMP

Medical instrumentation

Precision data acquisition

Microphone preamplification

Vibration analysis

AD8421

NOISE ONLY

100

10k

100k

Multiplexed input applications

ADC driver

SOURCE RESISTANCE, R (Ω)

Figure 2. Noise Density vs. Source Resistance

GENERAL DESCRIPTION

The AD8421 is a low cost, low power, extremely low noise, ultralow

bias current, high speed instrumentation amplifier that is ideally

suited for a broad spectrum of signal conditioning and data

acquisition applications. This product features extremely high

CMRR, allowing it to extract low level signals in the presence of

high frequency common-mode noise over a wide temperature

range.

The AD8421 delivers 3 nV/√Hz input voltage noise and

200 fA/√Hz current noise with only 2 mA quiescent current,

making it an ideal choice for measuring low level signals. For

applications with high source impedance, the AD8421 employs

innovative process technology and design techniques to provide

noise performance that is limited only by the sensor.

The AD8421 uses unique protection methods to ensure robust

inputs while still maintaining very low noise. This protection

allows input voltages up to 40 V from the opposite supply rail

without damage to the part.

The 10 MHz bandwidth, 35 V/μs slew rate, and 0.6 μs settling

time to 0.001% (G = 10) allow the AD8421 to amplify high speed

signals and excel in applications that require high channel count,

multiplexed systems. Even at higher gains, the current feedback

architecture maintains high performance; for example, at G = 100,

the bandwidth is 2 MHz and the settling time is 0.8 μs. The

AD8421 has excellent distortion performance, making it suitable

for use in demanding applications such as vibration analysis.

A single resistor sets the gain from 1 to 10,000. The reference

pin can be used to apply a precise offset to the output voltage.

The AD8421 is specified from −40°C to +85°C and has typical

performance curves to 125°C. It is available in 8-lead MSOP

and SOIC packages.

Rev. 0

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

12 3 4 5 6 7...28

下载PDF

与AD8421ARZ相关器件

型号	品牌	描述	获取价格	数据表
AD8421ARZ-R7	ADI	3 nV/√Hz, Low Power	获取价格
AD8421ARZ-RL	ADI	3 nV/√Hz, Low Power	获取价格
AD8421BRMZ	ADI	3 nV/√Hz, Low Power	获取价格
AD8421BRMZ-R7	ADI	3 nV/√Hz, Low Power	获取价格
AD8421BRMZ-RL	ADI	3 nV/√Hz, Low Power	获取价格
AD8421BRZ	ADI	3 nV/√Hz, Low Power	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8421ARZ

AD8421ARZ 技术参数

AD8421ARZ 数据手册

与AD8421ARZ相关器件

与AD8421ARZ相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8421ARZ

AD8421ARZ 技术参数

AD8421ARZ 数据手册

与AD8421ARZ相关器件

与AD8421ARZ相关文章

您还可以找

您在本页遇到什么问题？