®
X60250
Data Sheet
September 14, 2005
FN8146.1
Micro Power Programmable Voltage
Reference
FEATURES
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1.25V 1.0%, 20ppm/°C Tempco Reference
Adjustable to ±0.25% Over the 0 to 1.25V Range
8 bit, 100kΩ XDCP on-chip
Programmable Resolution of 4.9mV (255 steps)
Extra Matched 100kΩ Resistor Available for
Increased Resolution Over a Smaller Range
2.7V to 5.5V Supply Range
2-Wire Interface for Programming Reference
Setting
Low Supply Current: 12µA in Normal Mode
8-pin TSSOP Package
Programmable Reference
NV Memory
Pb-Free Plus Anneal Available (RoHS Compliant)
PROGRAMMABLE VOLTAGE
REFERENCE APPLICATIONS
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Sensor Bias
Variable DAC reference
Linear Voltage Regulators
DC/DC converters
Voltage comparators
Motor controllers
Amplifier biasing
DESCRIPTION
The Intersil X60250 combines a temperature
compensated voltage reference with a Intersil Digitally
Controlled Potentiometer (XDCP) to provide a precision
adjustable reference with a range of 0.0V to 1.25V. The
device includes a serial bus interface to enable in-circuit
programming of the reference voltage.
The XDCP contains a resistor chain with 255 taps to
provide 8 bits of digital adjustment to the reference
voltage. Non-volatile storage retains the digital wiper
setting, for permanent reference programming. An
additional matched 100kΩ resistor is available to
increase resolution of the output voltage while retaining
accuracy.
IC BLOCK DIAGRAM
V
CC
V
REFOUT
Pwr On Recall
1.25V
Reference
256 Tap DCP
100K
V
OUT
R
1
EE
PROM
SCL
SDA
Serial
Interface
100kΩ
Digital Wiper
Control
GND
V
REFL
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
INTERSIL [ INTERSIL CORPORATION ]
