1

DATASHEET

5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision

Op Amp

ISL28134

The ISL28134 is a single, chopper-stabilized zero drift

operational amplifier optimized for single and dual supply

operation from 2.25V to 6.0V and ±1.125V and ±3.0V. The

ISL28134 uses auto-correction circuitry to provide very low input

offset voltage, drift and a reduction of the 1/f noise corner below

0.1Hz. The ISL28134 achieves ultra low offset voltage, offset

temperature drift, wide gain bandwidth and rail-to-rail

input/output swing while minimizing power consumption.

The ISL28134 is ideal for amplifying the sensor signals of analog

front-ends that include pressure, temperature, medical, strain

gauge and inertial sensors down to the µV levels.

The ISL28134 can be used over standard amplifiers with high

stability across the industrial temperature range of -40°C to

+85°C and the full industrial temperature range of -40°C to

+125°C. The ISL28134 is available in an industry standard

pinout SOIC and SOT-23 packages.

Applications

• Medical instrumentation

•Sensor gain amps

• Precision low drift, low frequency ADC drivers

• Precision voltage reference buffers

• Thermopile, thermocouple, and other temperature sensors

front-end amplifiers

• Inertial sensors

• Process control systems

• Weight scales and strain gauge sensors

Features

• Rail-to-rail inputs and outputs

• No 1/f noise corner down to 0.1Hz

- Input noise voltage . . . . . . . . . . . . . . . . . 10nV/

Hz at 1kHz

• Low offset voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5µV, Max

• Superb offset drift . . . . . . . . . . . . . . . . . . . . . . . 15nV/°C, Max

• Single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25V to 6.0V

• Dual supply . . . . . . . . . . . . . . . . . . . . . . . . . ±1.125V to ±3.0V

• Wide bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5MHz

• Operating temperature range

- Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

- Full industrial . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C

•Packaging

- Single: SOIC, SOT-23

Related Literature

• AN1641, “ISL28134SOICEVAL1Z Evaluation Board User’s

Guide”

• AN1560, “Making Accurate Voltage Noise and Current Noise

Measurements on Operational Amplifiers Down to 0.1Hz”

+

-

ISL28134

ISL26102

24-BIT ADC

ISL21010

5V VREF

+5

+

-

DCP

ISL22316

50kΩ

50kΩ

50Ω

50Ω

ISL28134

FIGURE 1. PRECISION WEIGH SCALE / STRAIN GAUGE

-2.0 -1.5 -1.0 -0.5

-2.5

0

200

400

600

800

1000

1200

0

0.5 1.0

1.5 2.0

2.5

1400

N = 2796

T = -40°C to +125°C

1600

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

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

October 14, 2014

FN6957.6