X60250 Datasheet, PDF (1/16 Pages) Intersil Corporation – Micro Power Programmable Voltage Reference

®
Data Sheet
September 14, 2005
X60250
FN8146.1
Micro Power Programmable Voltage
Reference
FEATURES
• 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
• 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
SCL
SDA
1.25V
Reference
100K
EE
PROM
V_OUT
R₁
Serial
Interface
Digital Wiper
Control
100kΩ
GND
V_REFL
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2005. All Rights Reserved
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