ISL28127_12 Datasheet, PDF (39/44 Pages) Intersil Corporation – Providing high-performance solutions for every link in the signal chain

Ultra Low Noise,
Precision Voltage
Reference
The ISL21090 is an ultra low noise, high DC accuracy
precision voltage reference with wide input voltage
range from 3.7V to 36V. The ISL21090 uses the new
Intersil Advanced Bipolar technology to achieve sub
1μV_P-P (0.1Hz to 10Hz) noise with an initial voltage
accuracy of 0.02%. The ISL21090 offers a 1.25V and
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.
Key Features
• 2.5V Reference Output Voltage Option
• Initial Accuracy: ±0.02%
• Output Voltage Noise: 1μV_P-P Typ
(0.1Hz to 10Hz) (1.25V Option)
• Supply Current: 930μA (Typ)
• Tempco: 7ppm/°C Max
• Output Current Capability: 20mA
• Line Regulation: 8ppm/V
• Load Regulation: 2.5ppm/mA
• Operating Temperature Range: -40°C to
+125°C
Ultra Precision: ISL21090
Temperature Drift (Coefficient)
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
TEMPERATURE (°C)
105 125 145
ISL21090 Typical Temperature Coefficient
Long Term Drift
40
30
20
10
0
-10
-20
-30
0
200
400
600
800
TIME (Hrs)
ISL21090 Long Term Drift Data (1000 Hrs)
1000
Micropower Voltage
Reference
The ISL21010 is a precision, low dropout micropower
bandgap voltage reference in a space-saving SOT-23
package. It operates from a single 2.2V to 5.5V supply
(minimum voltage is dependent on voltage option)
and provides a ±0.2% accurate reference.
Key Features
• Reference Output Voltages: 1.024V, 1.25V, 1.5V,
2.048V, 2.5V, 3.0V, 3.3V, 4.096V
• Precision 0.2% Initial Accuracy
• Input Voltage Range:
-- ISL21010-10, -12, -15: 2.2V to 5.5V
Low Cost: ISL21010
Low Power Consumption
70
+125°C
65
60
55
+25°C
50
45
40
35
-40°C
30
25
20
2.0 2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V_IN (V)
I_IN vs V_IN, Over-Temperature
Intersil Signal Path Products  2012  www.intersil.com
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