ISL21090B25

Ultra Low Noise, Precision Voltage Reference

Product Status: Mass Production

OVERVIEW

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).

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

PARAMETRICS

Parameters
ISL21090B25
Basic Information
Production Status
Mass Production
VOUT (V)
2.5
Temperature Coefficient
7 ppm/°C
IS (max)
1.28 mA
VS (min)
3.7 V
VS (max)
36 V
Min Operating Temperature
-40 °C
Max Operating Temperature
125 °C
LTD Stability (ppm)
20
Initial Accuracy (% Vout)
0.02
Output Noise (typ)
1.9 µVPP
Technology
Bipolar
ISOURCE (max) (mA)
20
ISINK (max) (mA)
10
Low Frequency Noise
1.9 µVPP
Qualification Level
Standard
Supply Voltage Vs Range (V)
3.7 to 36
Initial Accuracy (mV)
.5 mV
Can Sample
YES
Temperature Range
-40 to +125