1 nV/√Hz Low Noise
210°C Instrumentation Amplifier
AD8229
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Designed and guaranteed for 210°C operation
Low noise
1 nV/√Hz input noise
45 nV/√Hz output noise
High CMRR
AD8229
1
2
3
4
8
7
6
5
–IN
+V
S
R
R
V
OUT
G
G
REF
–V
+IN
S
126 dB CMRR (minimum), G = 100
80 dB CMRR (minimum) to 5 kHz, G = 1
Excellent ac specifications
15 MHz bandwidth (G = 1)
1.2 MHz bandwidth (G = 100)
22 V/μs slew rate
TOP VIEW
(Not to Scale)
Figure 1.
100
80
60
THD: −130 dBc (1 kHz, G = 1)
Versatile
40
20
4 V to 17 V dual supply
0
Gain set with single resistor (G = 1 to 1000)
Specified temperature range
−40°C to +210°C, SBDIP package
−40°C to +175°C, SOIC package
–20
–40
–60
–80
–100
APPLICATIONS
Down-hole instrumentation
Harsh environment data acquisition
Exhaust gas measurements
Vibration analysis
–55 –35 –15
5
25 45 65 85 105 125 145 165 185 205 225
TEMPERATURE (°C)
Figure 2. Typical Input Offset vs. Temperature (G = 100)
GENERAL DESCRIPTION
The AD8229 is an ultralow noise instrumentation amplifier
designed for measuring small signals in the presence of large
common-mode voltages and high temperatures.
bandwidth at high gain, for example, 1.2 MHz at G = 100. The
design includes circuitry to improve settling time after large
input voltage transients. The AD8229 was designed for excellent
distortion performance, allowing use in demanding applications
such as vibration analysis.
The AD8229 has been designed for high temperature operation.
The process is dielectrically isolated to avoid leakage currents at
high temperatures. The design architecture was chosen to
compensate for the low VBE voltages at high temperatures.
Gain is set from 1 to 1000 with a single resistor. A reference pin
allows the user to offset the output voltage. This feature can be
useful when interfacing with analog-to-digital converters.
The AD8229 excels at measuring tiny signals. It delivers industry
leading 1 nV/√Hz input noise performance. e high CMRR of
the AD8229 prevents unwanted signals from corrupting the
acquisition. The CMRR increases as the gain increases, offering
high rejection when it is most needed.
For the most demanding applications, the AD8229 is available
in an 8-lead side-brazed ceramic dual in-line package (SBDIP).
For space-constrained applications, the AD8229 is available in
an 8-lead plastic standard small outline package (SOIC).
The AD8229 is one of the fastest instrumentation amplifiers
available. Its current feedback architecture provides high
Rev. B
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.
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
