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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 1.0µV_P-P (1.25V option) 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.02% (2.5V option).

The ISL21090 offers 1.25V, 2.5V, 5.0V and 7.5V output voltage options with 7ppm/°C temperature coefficient and also provides excellent line and load regulation. These devices are offered in an 8 Ld SOIC package.

The ISL21090 is ideal for high-end instrumentation, data acquisition and processing applications requiring high DC precision where low noise performance is critical.

Key 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