参数资料
| 型号： | OP297EZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 500KHZ DUAL 8CDIP |
| 标准包装： | 48 |
| 放大器类型： | 通用 |
| 电路数： | 2 |
| 转换速率： | 0.15 V/µs |
| 增益带宽积： | 500kHz |
| 电流 - 输入偏压： | 20pA |
| 电压 - 输入偏移： | 25µV |
| 电流 - 电源： | 525µA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 40 V，±2 V ~ 20 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-CERDIP |
| 包装： | 管件 |
| 产品目录页面： | 774 (CN2011-ZH PDF) |
Dual Low Bias Current
Precision Operational Amplifier
OP297
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
2008 Analog Devices, Inc. All rights reserved.
FEATURES
Low offset voltage: 50 μV maximum
Low offset voltage drift: 0.6 μV/°C maximum
Very low bias current: 100 pA maximum
Very high open-loop gain: 2000 V/mV minimum
Low supply current (per amplifier): 625 μA maximum
Operates from ±2 V to ±20 V supplies
High common-mode rejection: 120 dB minimum
APPLICATIONS
Strain gage and bridge amplifiers
High stability thermocouple amplifiers
Instrumentation amplifiers
Photocurrent monitors
High gain linearity amplifiers
Long-term integrators/filters
Sample-and-hold amplifiers
Peak detectors
Logarithmic amplifiers
Battery-powered systems
GENERAL DESCRIPTION
The OP297 is the first dual op amp to pack precision perform-
ance into the space saving, industry-standard 8-lead SOIC
package. The combination of precision with low power and
extremely low input bias current makes the dual OP297 useful
in a wide variety of applications.
Precision performance of the OP297 includes very low offset
(less than 50 μV) and low drift (less than 0.6 μV/°C). Open-
loop gain exceeds 2000 V/mV, ensuring high linearity in every
application.
Errors due to common-mode signals are eliminated by the
common-mode rejection of over 120 dB, which minimizes
offset voltage changes experienced in battery-powered systems.
The supply current of the OP297 is under 625 μA.
The OP297 uses 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 OP297 is under 100 pA at
25°C and is under 450 pA over the military temperature range
per amplifier. This part can operate with supply voltages as low
as ±2 V.
PIN CONFIGURATION
8
7
6
5
1
2
3
4
OUTA
–INA
+INA
V+
OUTB
–INB
+INB
V–
B
A
00
30
0-
0
01
Figure 1.
TEMPERATURE (°C)
IN
P
UT
CURR
E
NT
(
p
A)
60
–60
40
20
0
–20
–40
–75
–50
–25
0
25
50
75
100
125
IOS
IB+
IB–
VS = ±15V
VCM = 0V
0
030
0-
0
02
Figure 2. Low Bias Current over Temperature
INPUT OFFSET VOLTAGE (V)
NUM
BE
R
O
F
U
NI
T
S
400
0
300
200
100
1200 UNITS
–100 –80
–60
–40
–20
0
20
40
60
80
100
TA = 25°C
VS = ±15V
VCM = 0V
0
0300-
00
3
Figure 3. Very Low Offset
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 device, see the OP497.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP-297EZ | 制造商:AD 制造商全称:Analog Devices 功能描述:DUAL LOW BIAS CURRENT PRECISION OPERATIONAL AMPLIFIER |
| OP297FAB | 制造商:TT Electronics / OPTEK Technology 功能描述:LED IR PLASTIC HP T-1 制造商:TT ELECTRONICS 功能描述:Bulk / LED Plastic T 1- 3/4 with High power LED Chip 制造商:TT Electronics / OPTEK Technology 功能描述:LED PLASTIC T 1- 3/4 WITH HIGH POWER LED CHIP |
| OP297FP | 制造商:Analog Devices 功能描述:OP Amp Dual GP 制造商:Rochester Electronics LLC 功能描述:DUAL PRECISION LOW IB OP - Bulk 制造商:Analog Devices 功能描述:OP AMP DUAL LOW BIAS DIP8 297 |
| OP-297FP | 制造商:AD 制造商全称:Analog Devices 功能描述:DUAL LOW BIAS CURRENT PRECISION OPERATIONAL AMPLIFIER |
| OP297FPZ | 功能描述:IC OPAMP GP 500KHZ DUAL 8DIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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