ISL21090 Datasheet, PDF (1/10 Pages) Intersil Corporation – Ultra Low Noise, Precision Voltage Reference Output Current Capability 20mA

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 from 4.7V to
36V. The ISL21090 uses the new Intersil Advanced Bipolar
technology to achieve sub 2µV_P-P 0.1Hz noise with an initial
voltage accuracy of 0.02%.
The ISL21090 offers a 2.5V output voltage option with
7ppm/°C temperature coefficient and also provides excellent
line and load regulation. The device is 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.
Features
• Reference Output Voltage Option
- 2.5V (Released)
- 1.25V, 3.3V, 4.096V, 5V, 7V and 10V (Coming Soon)
• Initial Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.02%
• Output Voltage Noise . . . . . . . . . . . 1.9µV_P-P Typ (0.1Hz to 10Hz)
(2.5V Option)
• Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930µA (Typ)
• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7ppm/°C Max
(3ppm/°C Coming Soon)
• Output Current Capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA
• Line Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8ppm/V
• Load Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5ppm/mA
• 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
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
TYPICAL TEMPERATURE
2.5005 ^{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
June 8, 2011
1
FN6993.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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