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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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Precision Single and Dual Low Noise Operational

Amplifiers

ISL28127, ISL28227

The ISL28127 and ISL28227 are very high precision

amplifiers featuring very low noise, low offset voltage,

low input bias current and low temperature drift making

them the ideal choice for applications requiring both high

DC accuracy and AC performance. The combination of

precision, low noise, and small footprint provides the

user with outstanding value and flexibility relative to

similar competitive parts.

Applications for these amplifiers include precision active

filters, medical and analytical instrumentation, precision

power supply controls, and industrial controls.

The ISL28127 single and ISL28227 dual are available in

an 8 Ld SOIC, TDFN and MSOP packages. All devices are

offered in standard pin configurations and operate over

the extended temperature range to -40°C to +125°C.

Features

• Very Low Voltage Noise . . . . . . . . . . . . . 2.5nV/Hz

• Low Input Offset . . . . . . . . . . . . . . . 70µV, Max.

• Superb Offset Drift . . . . . . . . . . . 0.5µV/°C, Max.

• Input Bias Current . . . . . . . . . . . . . . 10nA, Max.

• Wide Supply Range. . . . . . . . . . . . . . 4.5V to 40V

• Gain-bandwidth Product . 10MHz Unity Gain Stable

• No Phase Reversal

Applications*(see page 20)

• Precision Instruments

• Medical Instrumentation

• Industrial Controls

• Active Filter Blocks

• Data Acquisition

•Power Supply Control

Related Literature*(see page 20)

• AN1508: ISL281X7SOICEVAL1Z Evaluation Board

User’s Guide

Typical Application

Input Noise Voltage Spectral

Density

-

+

OUTPUT

Sallen-Key Low Pass Filter (1MHz)

95.3

232

68.3nF

1.5nF

FREQUENCY (Hz)

1

10

100

0.1

1

10

100

1k

10k

100k

March 18, 2010

FN6633.3