AD8279

更新时间： 2024-02-16 22:09:31

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
18页	409K
描述
Low Power, Wide Supply Range, Low Cost Difference Amplifiers, G = ½, 2

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AD8279 技术参数

Source Url Status Check Date：	2013-05-01 14:56:25.211	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	SOIC	包装说明：	SOP, SOP14,.25
针数：	14	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.75	放大器类型：	INSTRUMENTATION AMPLIFIER
标称带宽 (3dB)：	0.55 MHz	最小共模抑制比：	86 dB
最大输入失调电压：	200 µV	JESD-30 代码：	S-PDSO-G14
长度：	8.65 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：	0.0012%
功能数量：	1	端子数量：	14
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP14,.25	封装形状：	SQUARE
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	+-2/+-18/2/36 V	认证状态：	Not Qualified
座面最大高度：	1.75 mm	标称压摆率：	1.4 V/us
子类别：	Instrumentation Amplifier	最大压摆率：	0.4 mA
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：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

AD8279 数据手册

Low Power, Wide Supply Range,

Low Cost Difference Amplifiers, G = ½, 2

AD8279

Preliminary Technical Data

FEATURES

Wide input range beyond supplies

Rugged input overvoltage protection

Low supply current: 200 μA maximum

Low power dissipation: 0.5 mW at V_S= 2.5 V

Bandwidth: 1 MHz (G = ½)

FUNCTIONAL BLOCK DIAGRAM

CMRR: 80 dB minimum, dc to 20 kHz (G = ½)

Low offset voltage drift: 2 μV/°C maximum (B Grade)

Low gain drift: 1 ppm/°C maximum (B Grade)

Enhanced slew rate: 1.4 V/μs

Wide power supply range:

Single supply: 2 V to 36 V

Dual supplies: 2 V to 18 V

APPLICATIONS

Voltage measurement and monitoring

Current measurement and monitoring

Instrumentation amplifier building block

Portable, battery-powered equipment

Test and measurement

GENERAL DESCRIPTION

The AD8279 consists of two general-purpose difference

amplifiers intended for precision signal conditioning in power

critical applications that require both high performance and low

power. The AD8279 provides exceptional common-mode

rejection ratio (80 dB) and high bandwidth while amplifying

signals well beyond the supply rails. The on-chip resistors are

laser-trimmed for excellent gain accuracy and high CMRR. They

also have extremely low gain drift vs. temperature.

Figure 1.

The AD8279 operates on single supplies (2.0 V to 36 V) or dual

supplies ( 2 V to 18 V). The maximum quiescent supply current

is 200 μA per channel, which is ideal for battery-operated and

portable systems.

The AD8279 is available in a 14-lead SOIC package. It is

specified for performance over the industrial temperature range

of −40°C to +85°C and are fully RoHS compliant.

The common-mode range of the amplifiers extend to almost

triple the supply voltage (for G = ½), making them ideal for

single-supply applications that require a high common-mode

voltage range. The internal resistors and ESD circuitry at the

inputs also provide overvoltage protection to the op amp.

Table 1. Difference Amplifiers by Category

Low

Distortion

High

Voltage

Current

Sensing¹

Low Power

AD8276

AD8277

AD8278

AD8279

AD8270

AD8271

AD8273

AD8274

AMP03

AD628

AD629

AD8202 (U)

AD8203 (U)

AD8205 (B)

AD8206 (B)

AD8216 (B)

The AD8279 can be used as difference amplifiers with G = ½ or

G = 2. It can also be connected in a high precision, single-ended

configuration for non-inverting and inverting gains of −½, −2,

+3, +2, +1½, +1, or +½. The AD8279 provide an integrated

precision solution that has a smaller size, lower cost, and better

performance than a discrete alternative.

¹U = unidirectional, B = bidirectional.

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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