ISL21090BFB812Z-TK_13 Datasheet, PDF (1/20 Pages) Intersil Corporation – Ultra Low Noise, Precision Voltage Reference

Ultra Low Noise, Precision Voltage Reference
ISL21090
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.
Applications
• High-end instrumentation
• Precision voltage sources for data acquisition system,
industrial control, communication infrastructure
• Process control and instrumentations
• Active source for sensors
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) . . . . . . . . . . . . 1.0µV_P-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
Related Literature
See AN1764, “ISL21090XXEV1Z User’s Guide”
VIN
10µF 0.1µF
1
DNC
2
VIN
3
COMP
4
GND
8
DNC
7
DNC
6
VOUT
5
TRIM
VREF
0.1µF
SERIAL CLOCK
CHIP SELECT
SERIAL DATA I/O
VDD
SCLK
CSb
SDIO
DAC
VREF
OUTxS
OUTxF
GND
DACOUTx
FIGURE 1. ISL21090 TYPICAL APPLICATION DIAGRAM
2.5010
2.5005
TYPICAL TEMPERATURE
COEFFICIENT CURVE FOR 10 UNITS
2.5000
2.4995
2.4990
2.4985
2.4980
-55 -35 -15
5 25 45 65 85 105 125 145
TEMPERATURE (°C)
FIGURE 2. V_OUT vs TEMPERATURE (2.5V OPTION)
February 27, 2013
1
FN6993.5
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2011-2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.