ISL21010_1112 Datasheet, PDF (1/20 Pages) Intersil Corporation – Micropower Voltage Reference

Micropower Voltage Reference
ISL21010
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. The ISL21010 provides up to 25mA output
current sourcing with low 150mV dropout voltage.
Output voltage options include 1.024V, 1.2V, 1.5V, 2.048V,
2.5V, 3.0V, 3.3V and 4.096V. The low supply current and low
dropout voltage combined with high accuracy make the
ISL21010 ideal for precision battery powered applications.
Applications
• Battery Management/Monitoring
• Low Power Standby Voltages
• Portable Instrumentation
• Consumer/Medical Electronics
• Lower Cost Industrial and Instrumentation
• Power Regulation Circuits
• Control Loops and Compensation Networks
• LED/Diode Supply
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 -20 . . . . . . . . . . . . . . . . 2.2V to 5.5V
- ISL21010-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6V to 5.5V
- ISL21010-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1V to 5.5V
- ISL21010-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4V to 5.5V
- ISL21010-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2V to 5.5V
• Output Current Source Capability . . . . . . . . . . . . . . . . . 25mA
• Operating Temperature Range. . . . . . . . . . .-40°C to +125°C
• Output Voltage Noise (V_OUT = 2.048V) . . . . . . . . . . . . . 58µV_P-P
(0.1Hz to 10Hz)
• Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48µA (Typ)
• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23
• Pb-Free (RoHS compliant)
+5.0V
Cb
1µF
ISL21010
VIN
VOUT
GND
Cl
0.1µF - 10µF
SIGNAL INPUT
0 – 5V
+5.0V
ISL28134
R1
50Ω
C1
4.7nF
+5.0V
+AIN1 VREF VDD
ADC
-AIN1
GND
FIGURE 1. TYPICAL APPLICATION DIAGRAM
December 8, 2011
1
FN7896.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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