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OP297EZ

更新时间： 2024-01-26 18:52:12
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器
页数 文件大小 规格书
16页 191K
描述
Dual Low Bias Current Precision Operational Amplifier

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中文翻译

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OP297EZ 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIP针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.67
放大器类型：OPERATIONAL AMPLIFIER最大输入失调电压：25 µV
JESD-30 代码：R-GDIP-T8JESD-609代码：e0
功能数量：2端子数量：8
封装主体材料：CERAMIC, GLASS-SEALED封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
表面贴装：NO端子面层：TIN LEAD
端子形式：THROUGH-HOLE端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

OP297EZ 数据手册

 浏览型号OP297EZ的Datasheet PDF文件第2页浏览型号OP297EZ的Datasheet PDF文件第3页浏览型号OP297EZ的Datasheet PDF文件第4页浏览型号OP297EZ的Datasheet PDF文件第5页浏览型号OP297EZ的Datasheet PDF文件第6页浏览型号OP297EZ的Datasheet PDF文件第7页 
8/21/97 4:00 PM  
Dual Low Bias Current  
Precision Operational Amplifier  
a
OP297  
FEATURES  
PIN CONNECTIONS  
Precision Performance in Standard SO-8 Pinout  
Low Offset Voltage: 50 ␮V max  
Low Offset Voltage Drift: 0.6 ␮V/؇C max  
Very Low Bias Current:  
Plastic Epoxy-DIP (P Suffix)  
8-Pin Cerdip (Z Suffix)  
8-Pin Narrow Body SOIC (S Suffix)  
␣ ␣ +25؇C (100 pA max)  
␣␣␣55؇C to +125؇C (450 pA max)  
Very High Open-Loop Gain (2000 V/mV min)  
Low Supply Current (Per Amplifier): 625 ␮A max  
Operates From 62 V to 620 V Supplies  
High Common-Mode Rejection: 120 dB min  
Pin Compatible to LT1013, AD706, AD708, OP221,  
␣ ␣ LM158, and MC1458/1558 with Improved Performance  
OUT A 1  
8 V+  
B
A
–
–IN A  
+IN A  
V–  
2
3
4
7 OUT B  
6 –IN B  
–
5
+IN B  
APPLICATIONS  
Strain Gauge and Bridge Amplifiers  
High Stability Thermocouple Amplifiers  
Instrumentation Amplifiers  
Photo-Current Monitors  
High-Gain Linearity Amplifiers  
Long-Term Integrators/Filters  
Sample-and-Hold Amplifiers  
Peak Detectors  
Errors due to common-mode signals are eliminated by the  
OP297’s common-mode rejection of over 120 dB. The  
OP297’s power supply rejection of over 120 dB minimizes  
offset voltage changes experienced in battery powered systems.  
Supply current of the OP297 is under 625 µA per amplifier and  
it can operate with supply voltages as low as ±2 V.  
The OP297 utilizes a super-beta input stage with bias current  
cancellation to maintain picoamp bias currents at all tempera-  
tures. This is in contrast to FET input op amps whose bias  
currents start in the picoamp range at 25°C, but double for  
every 10°C rise in temperature, to reach the nanoamp range  
above 85°C. Input bias current of the OP 297 is under 100 pA  
at 25°C and is under 450 pA over the military temperature  
range.  
Logarithmic Amplifiers  
Battery-Powered Systems  
GENERAL DESCRIPTION  
The OP297 is the first dual op amp to pack precision perfor-  
mance into the space-saving, industry standard 8-pin SO pack-  
age. Its combination of precision with low power and extremely  
low input bias current makes the dual OP297 useful in a wide  
variety of applications.  
Combining precision, low power and low bias current, the  
OP297 is ideal for a number of applications including instru-  
mentation amplifiers, log amplifiers, photodiode preamplifiers  
and long-term integrators. For a single device, see the OP97;  
for a quad, see the OP497.  
Precision performance of the OP297 includes very low offset,  
under 50 µV, and low drift, below 0.6 µV/°C. Open-loop gain  
exceeds 2000 V/mV insuring high linearity in every application.  
400  
60  
I
–
B
1200 UNITS  
V
V
= ±15V  
T
V
V
= +25°C  
= ±15V  
S
A
= 0V  
CM  
S
40  
20  
= 0V  
CM  
300  
200  
100  
0
I
+
B
0
I
OS  
20  
–40  
–60  
–100 –80 –60 –40 –20  
0
20 40 60 80 100  
–75 –50 –25  
0
25 50 75 100 125  
INPUT OFFSET VOLTAGE (µV)  
TEMPERATURE (°C)  
Figure 1. Low Bias Current Over Temperature  
REV. D  
Figure 2. Very Low Offset  
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  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 617/329-4700  
Fax: 617/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1997  
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中文翻译

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OP297EZ 替代型号

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