LT1009_05 Datasheet, PDF (1/8 Pages) Linear Technology – 2.5V Reference

LT1009 Series
2.5V Reference
FEATURES
■ _{Maximum Initial Tolerance: 0.2%}
■ _{Guaranteed Temperature Stability}
■ _{Maximum 0.6Ω Dynamic Impedance}
■ _{Wide Operating Current Range}
■ _{Directly Interchangeable with LM136 for Improved}
Performance
■ _{No Adjustments Needed for Minimum Temperature}
Coefficient
■ _{Available in 8-Lead SO and MSOP Packages and 3-Lead}
TO-92 Package
U
APPLICATIO S
■ _{Reference for 5V Systems}
■ _{8-Bit A/D and D/A Reference}
■ _{Digital Voltmeters}
■ _{Current Loop Measurement and Control Systems}
■ _{Power Supply Monitor}
DESCRIPTIO
The LT^®1009 is a precision trimmed 2.5V shunt regulator
diode featuring a maximum initial tolerance of only ±5mV.
The low dynamic impedance and wide operating current
range enhances its versatility. The 0.2% reference toler-
ance is achieved by on-chip trimming which not only
minimizes the initial voltage tolerance but also minimizes
the temperature drift.
Even though no adjustments are needed with the LT1009,
a third terminal allows the reference voltage to be adjusted
±5% to calibrate out system errors. In many applications,
the LT1009 can be used as a pin-to-pin replacement of the
LM136 and the external trim network eliminated.
For a lower drift 2.5V reference, see the LT1019 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
2.5V Reference
5V TO 35V
3.6k
LT1009
OUTPUT
10k*
TRIM
*DOES NOT AFFECT
TEMPERATURE COEFFICIENT.
±5% TRIM RANGE
1009 TA01
Output Voltage
2.53
2.52
GUARANTEED
2.51
MAXIMUM
2.50
TYPICAL
2.49
GUARANTEED
MINIMUM
2.48
2.47
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1009 TA02
1009fd
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