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AD8279ARZ PDF预览

AD8279ARZ

更新时间: 2024-01-30 20:33:41
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
24页 513K
描述
Low Power, Wide Supply Range, Low Cost Difference Amplifiers,

AD8279ARZ 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:14Reach Compliance Code:compliant
ECCN代码:EAR99HTS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 µVJESD-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 mmBase Number Matches:1

AD8279ARZ 数据手册

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Low Power, Wide Supply Range,  
Low Cost Difference Amplifiers, G = ½, 2  
AD8278/AD8279  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
+VS  
Wide input range beyond supplies  
7
Rugged input overvoltage protection  
Low supply current: 200 μA maximum (per amplifier)  
Low power dissipation: 0.5 mW at VS = 2.5 V  
Bandwidth: 1 MHz (G = ½)  
CMRR: 80 dB minimum, dc to 20 kHz (G = ½, B Grade)  
Low offset voltage drift: 1 ꢀV/°C maximum (B Grade)  
Low gain drift: 1 ppm/°C maximum (B Grade)  
Enhanced slew rate: 1.4 V/μs  
AD8278  
20k  
40kΩ  
40kΩ  
2
5
6
–IN  
+IN  
SENSE  
OUT  
20kΩ  
3
1
REF  
4
Wide power supply range  
–VS  
Single supply: 2 V to 36 V  
Dual supplies: 2 V to 18 V  
8-lead SOIC, 14-lead SOIC, and 8-lead MSOP packages  
Figure 1. AD8278  
+VS  
11  
AD8279  
20k  
APPLICATIONS  
40kΩ  
2
12  
13  
–INA  
SENSEA  
OUTA  
Voltage measurement and monitoring  
Current measurement and monitoring  
Instrumentation amplifier building block  
Portable, battery-powered equipment  
Test and measurement  
3
6
14  
+INA  
–INB  
REFA  
40kΩ  
40kΩ  
20kΩ  
20kΩ  
10  
9
SENSEB  
OUTB  
GENERAL DESCRIPTION  
The AD8278 and AD8279 are general-purpose difference  
amplifiers intended for precision signal conditioning in power  
critical applications that require both high performance and low  
power. The AD8278 and AD8279 provide exceptional common-  
mode rejection ratio (80 dB) and high bandwidth while amplifying  
input signals that are 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.  
5
8
+INB  
REFB  
40kΩ  
20kΩ  
4
–VS  
Figure 2. AD8279  
Table 1. Difference Amplifiers by Category  
Low  
Distortion  
AD8270  
AD8271  
AD8273  
AD8274  
AMP03  
High Voltage  
AD628  
AD629  
Current Sensing1  
AD8202 (U)  
AD8203 (U)  
AD8205 (B)  
AD8206 (B)  
AD8216 (B)  
Low Power  
AD8276  
AD8277  
The common-mode range of the amplifier extends to almost  
triple the supply voltage (for G = ½), making the amplifer 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.  
The AD8278 and AD8279 can be used as difference amplifiers with  
G = ½ or G = 2. They 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 AD8278 and AD8279  
provide an integrated precision solution that has a smaller size,  
lower cost, and better performance than a discrete alternative.  
1U = unidirectional, B = bidirectional.  
The AD8278 is available in the space-saving 8-lead MSOP and  
SOIC packages, and the AD8279 is offered in a 14-lead SOIC  
package. Both are specified for performance over the industrial  
temperature range of −40°C to +85°C and are fully RoHS  
compliant.  
The AD8278 and AD8279 operate 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, which is ideal for battery-operated and portable  
systems. For unity-gain difference amplifiers with similar  
performance, refer to the AD8276 and AD8277 data sheets.  
Rev. C  
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  
www.analog.com  
Fax: 781.461.3113 ©2009–2011 Analog Devices, Inc. All rights reserved.  
 

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