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Intersil introduces ISL28134, a new 5V, ultra-low noise, chopper-stabilized zero drift rail-to-rail amplifier featuring half the noise of competitive amps that consume similar power.

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 is designed to have ultra low offset voltage (2.5µV max) and offset temperature drift (15nV/°C max), wide gain bandwidth (3.5MHz), low noise (10nV/vHz), and rail-to-rail input/output swing while minimizing power consumption (900µA max).

The ISL28134 is an excellent design choice for amplifying small signals in analog front ends that interface to pressure, temperature, medical, strain gage and inertial sensors with minimal error contribution from the amplifier. It is also ideal for low noise instrumentation systems, such as signal conditioning for 24-bit delta sigma ADCs. ISL28134 is suitable variety of application requiring accuracy and low noise, such as test and measurement, weight scales, flow meters, medical instrumentation, and industrial equipment.

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.

Features and Specifications
• Rail-to-Rail Inputs and Outputs
- CMRR @ VCM = 0.1V beyond VS . . . . . . . . . . . . .135dB, typ.
- VOH and VOL . . . . . . . . . . . . . . . . . . . . . . 10mV from VS, typ.
• Low Noise, No 1/f Noise Corner Down to 0.1Hz
- Input Noise Voltage . . . . . . . . . . . . . . . . .10nV/vHz @ 1kHz
- 0.1Hz to 10Hz Noise Voltage . . . . . . . . . . . . . . . . 250nVP-P
• 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
• Low ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .675µA, typ.
• Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5MHz
• Operating Temperature Range. . . . . . . . . . . . . . -40°C to +85°C
• Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOIC-8

Author
Intersil Corp

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