Datasheet > OP297BIEP

OP297BIEP

更新时间： 2024-09-29 19:15:07

品牌	Logo	应用领域
亚德诺 - ADI		放大器光电二极管
页数	文件大小	规格书
16页	261K
描述
IC DUAL OP-AMP, 50 uV OFFSET-MAX, 0.5 MHz BAND WIDTH, PDIP8, PLASTIC, DIP-8, Operational Amplifier

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OP297BIEP 数据手册

Dual Low Bias Current

Precision Operational Amplifier

OP297

FEATURES

PIN CONFIGURATION

Low offset voltage: 50 μV maximum

V+

OUTA

–INA

+INA

V–

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

OUTB

–INB

+INB

Figure 1.

High common-mode rejection: 120 dB minimum

APPLICATIONS

= ±15V

= 0V

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

–20

–40

–60

GENERAL DESCRIPTION

–75

–50

–25

100

125

TEMPERATURE (°C)

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.

Figure 2. Low Bias Current over Temperature

400

300

200

100

1200 UNITS

= 25°C

= ±15V

= 0V

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.

–100 –80 –60 –40 –20

80 100

INPUT OFFSET VOLTAGE (µV)

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.

Rev. G

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

Fax: 781.461.3113

www.analog.com

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与OP297BIEP相关器件

型号	品牌	获取价格	描述	数据表
OP297BIEZ	ADI	获取价格	IC DUAL OP-AMP, 50 uV OFFSET-MAX, 0.5 MHz BAND WIDTH, CDIP8, CERDIP-8, Operational Amplifi
OP297BIFZ	ADI	获取价格	IC DUAL OP-AMP, 300 uV OFFSET-MAX, 0.5 MHz BAND WIDTH, CDIP8, CERDIP-8, Operational Amplif
OP297BIGP	ADI	获取价格	IC DUAL OP-AMP, 200 uV OFFSET-MAX, 0.5 MHz BAND WIDTH, PDIP8, PLASTIC, DIP-8, Operational
OP297BIGS	ADI	获取价格	IC DUAL OP-AMP, 200 uV OFFSET-MAX, 0.5 MHz BAND WIDTH, PDSO8, PLASTIC, SO-8, Operational A
OP297C	TTELEC	获取价格	Plastic Infrared Emitting Diode
OP297C		获取价格	Plastic Infrared Emitting Diode
OP297D	TTELEC	获取价格	Plastic Infrared Emitting Diode
OP297EP	ADI	获取价格	Dual Low Bias Current Precision Operational Amplifier
OP297EZ	ADI	获取价格	Dual Low Bias Current Precision Operational Amplifier
OP-297EZ	ADI	获取价格	DUAL LOW BIAS CURRENT PRECISION OPERATIONAL AMPLIFIER

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