1

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 features very low input offset voltage and low noise

with no 1/f noise corner down to 0.1Hz. The ISL28134 is

designed to have ultra low offset voltage and offset temperature

drift, wide gain bandwidth and rail-to-rail input/output swing

while minimizing power consumption.

This amplifier is ideal for amplifying the sensor signals of analog

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

gauge and inertial sensors.

The ISL28134 can be used over standard amplifiers with high

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

+85°C. The ISL28134 is available in an industry standard pinout

SOIC package.

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 . . . . . . . . . . . . . . . . .10 nV/

√Hz @ 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 (Coming Soon) . . . . . . . . . .-40°C to +125°C

•Packaging

- Single: SOIC, SOT-23, µTDFN (1.6mmx1.6mm)

Related Literature

• See AN1641, “ISL28134 Evaluation Board Manual”

• See AN1560, “Making Accurate Voltage Noise and Current

Noise Measurements on Operational Amplifiers Down to

0.1Hz”

FIGURE 1. TYPICAL APPLICATION

100

1MΩ

+

-

GND

100

ANALOG

1MΩ

3V

HIGH GAIN AMPLIFIER

0.1µ

RL

SINGLE SUPPLY

SENSOR INPUT

-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 = 2330

T = -40°C to +85°C

June 8, 2011

FN6957.1

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

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