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Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

OPA187, OPA2187, OPA4187

SBOS807 – DECEMBER 2016

OPAx187 0.005 µV/°C Drift, Low Power, Rail-to-Rail Output

36-V Operational Amplifiers

Zero-Drift Series

1

1 Features

1

•

Low Offset Voltage: 10 µV (maximum)

•

Zero Drift: 0.005 µV/°C

•

Low Noise: 20 nV/

√Hz

•

PSRR: 160 dB

•

CMRR: 140 dB

•

AOL: 160 dB

•

Quiescent Current: 100 µA

•

Wide Supply Voltage: ±2.25 V to ±18 V

•

Rail-to-Rail Output Operation

•

Input Includes Negative Rail

•

Low Bias Current: 100 pA (typical)

•

EMI Filtered Inputs

•

Microsize Packages

2 Applications

•

Bridge Amplifier

•

Strain Gauge

•

Test and Measurement Equipment

•

Transducer Application

•

Temperature Measurement

•

Electronic Scales

•

Medical Instrumentation

•

RTD Amplifier

•

Precision Active Filters

•

Low-Side Current Monitoring

3 Description

The OPAx187 series operational amplifiers use auto-

zeroing techniques to simultaneously provide low-

offset voltage (1 µV), and near zero drift over time

and temperature. These miniature, high-precision,

low-quiescent

current

amplifiers

offer

high-input

impedance and rail-to-rail output swing within 5 mV of

the rails into high-impedance loads. The input

common-mode range includes the negative rail.

Either single or dual supplies can be used in the

range of 4.5 V to 36 V (±2.25 V to ±18 V).

The single version of the OPAx187 device is

available in Microsize 8-pin VSSOP, 5-pin SOT-23,

and 8-pin SOIC packages. The dual version is offered

in 8-pin VSON, 8-pin VSSOP, and 8-pin SOIC

packages. The quad version is offered in 14-pin SO

and 14-pin TSSOP packages. All versions are

specified for operation from –40°C to +125°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

OPA187

SOIC (8)

4.90 mm × 3.91 mm

SOT-23 (5)

2.90 mm × 1.60 mm

VSSOP (8)

3.00 mm × 3.00 mm

OPA2187

SOIC (8)

4.90 mm × 3.91 mm

VSSOP (8)

3.00 mm × 3.00 mm

VSON (8)

3.00 mm × 3.00 mm

OPA4187

SOIC (14)

8.70 mm × 3.90 mm

TSSOP (14)

5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

OPAx187 Offers Precision Low-Side Current

Measurement Capability