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AD8429 PDF预览

AD8429

更新时间: 2024-01-24 20:39:03
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
20页 348K
描述
Low Noise, Low Gain Drift, G = 2000

AD8429 技术参数

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:SOIC-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.31.00.01风险等级:1.75
放大器类型:INSTRUMENTATION AMPLIFIER最大平均偏置电流 (IIB):0.15 µA
标称带宽 (3dB):15 MHz最小共模抑制比:90 dB
最大输入失调电流 (IIO):0.03 µA最大输入失调电压:50 µV
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:1
负供电电压上限:-18 V标称负供电电压 (Vsup):-15 V
功能数量:1端子数量:8
最高工作温度:125 °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:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:+-15 V认证状态:Not Qualified
座面最大高度:1.75 mm标称压摆率:22 V/us
子类别:Instrumentation Amplifier最大压摆率:9 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:AUTOMOTIVE
端子面层:Matte Tin (Sn)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:30最大电压增益:10000
最小电压增益:1标称电压增益:10
宽度:3.9 mmBase Number Matches:1

AD8429 数据手册

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Low Noise, Low Gain Drift, G = 2000  
Instrumentation Amplifier  
Data Sheet  
AD8428  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
+V  
–FIL  
S
Fixed gain of 2000  
Access to internal nodes provides flexibility  
Low noise: 1.5 nV/√Hz input voltage noise  
High accuracy dc performance  
Gain drift: 5 ppm/°C  
Offset drift: 0.3 μV/°C  
Gain accuracy: 0.05%  
–IN  
6k  
6kΩ  
6kΩ  
120kΩ  
3kΩ  
30.15Ω  
3kΩ  
OUT  
REF  
6kΩ  
120kΩ  
CMRR: 140 dB min  
+IN  
Excellent ac specifications  
Bandwidth: 3.5 MHz  
AD8428  
–V  
S
Slew rate: 40 V/μs  
+FIL  
Power supply range: 4 V to 18 V  
8-lead SOIC package  
ESD protection: 5000 V (HBM)  
Temperature range for specified performance:  
−40°C to +85°C  
Figure 1.  
Table 1. Instrumentation Amplifiers by Category1  
General-  
Purpose  
Zero  
Drift  
Military  
Grade  
Low  
Power  
Low  
Noise  
AD8220  
AD8221  
AD8222  
AD8224  
AD8228  
AD8295  
AD8231  
AD8290  
AD8293  
AD8553  
AD8556  
AD8557  
AD620  
AD621  
AD524  
AD526  
AD624  
AD627  
AD623  
AD8428  
AD8429  
Operational up to 125°C  
APPLICATIONS  
AD8235  
AD8236  
AD8426  
AD8226  
AD8227  
AD8420  
Sensor interface  
Medical instrumentation  
Patient monitoring  
1 See www.analog.com for the latest instrumentation amplifiers.  
The AD8428 is one of the fastest instrumentation amplifiers  
available. The circuit architecture is designed for high bandwidth  
at high gain. The AD8428 uses a current feedback topology for  
the initial preamplifier gain stage of 200, followed by a difference  
amplifier stage of 10. This architecture results in a 3.5 MHz  
bandwidth at a gain of 2000 for an equivalent gain bandwidth  
product of 7 GHz.  
GENERAL DESCRIPTION  
The AD8428 is an ultralow noise instrumentation amplifier  
designed to accurately measure tiny, high speed signals. It  
delivers industry-leading gain accuracy, noise, and bandwidth.  
All gain setting resistors for the AD8428 are internal to the part  
and are precisely matched. Care is taken in both the chip pinout  
and layout. This results in excellent gain drift and quick settling  
to the final gain value after the part is powered on.  
The AD8428 pinout allows access to internal nodes between the  
first and second stages. This feature can be useful for modifying  
the frequency response between the two amplification stages,  
thereby preventing unwanted signals from contaminating the  
output results.  
The high CMRR of the AD8428 prevents unwanted signals  
from corrupting the signal of interest. The pinout of the AD8428  
is designed to avoid parasitic capacitance mismatches that can  
degrade CMRR at high frequencies.  
The performance of the AD8428 is specified over the industrial  
temperature range of −40°C to +85°C. It is available in an 8-lead  
plastic SOIC package.  
Rev. A  
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 ©2011–2012 Analog Devices, Inc. All rights reserved.  
 

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