LT1009 Datasheet, PDF (1/8 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUITS

LT1009 Series
2.5V Reference
FEATURES
s _{Maximum Initial Tolerance: 0.2%}
s _{Guaranteed Temperature Stability}
s _{Maximum 0.6Ω Dynamic Impedance}
s _{Wide Operating Current Range}
s _{Directly Interchangeable with LM136 for Improved}
Performance
s _{No Adjustments Needed for Minimum Temperature}
Coefficient
U
APPLICATIO S
s _{Reference for 5V Systems}
s _{8-Bit A/D and D/A Reference}
s _{Digital Voltmeters}
s _{Current Loop Measurement and Control Systems}
s _{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.
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
1