Ultra Low Noise, Precision Voltage Reference

The ISL21090 is a ultra low noise, high DC accuracy precision voltage reference with wide input voltage range. The ISL21090 uses the new Intersil Advanced Bipolar technology to achieve sub 1.0µVP-P (1.25V option) 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.02 (2.5V option).

Features

• Reference output voltage option

- 1.25V, 2.5V, 5.0V and 7.5V

• Initial accuracy:

- ISL21090-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.03

- ISL21090-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.02

- ISL21090-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.025

- ISL21090-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.035

• Output voltage noise (0.1Hz to 10Hz) . . . . . . . . . . . . 1.0µVP-P typ (1.25V option)

• Supply current . . . . . . . . . . . . . . . . . . . . 750µA (1.25V option)

• Temperature coefficient . . . . . . . . . . . . . . . . . . 7ppm/°C max

• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA

• Line regulation . . . . . . . . . . . . . . . . . . .6ppm/V (1.25V option)

• Load regulation . . . . . . . . . . . . . . 2.5ppm/mA (1.25V option)

• Operating temperature range. . . . . . . . . . . .-40°C to +125°C

Applications

• High-end instrumentation

• Precision voltage sources for data acquisition system, industrial control, communication infrastructure

• Process control and instrumentations

• Active source for sensors