Datasheet

1
LT1009 Series
■
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
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.
■
Reference for 5V Systems
■
8-Bit A/D and D/A Reference
■
Digital Voltmeters
■
Current Loop Measurement and Control Systems
■
Power Supply Monitor
2.5V Reference
2.5V Reference
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
APPLICATIO S
U
FEATURES
TYPICAL APPLICATION
U
LT1009
OUTPUT
3.6k
5V TO 35V
10k*
TRIM
1009 TA01
*DOES NOT AFFECT
TEMPERATURE COEFFICIENT.
±5% TRIM RANGE
TEMPERATURE (°C)
–50
REFERENCE VOLTAGE (V)
2.53
2.52
2.51
2.50
2.49
2.48
2.47
25 75
1009 TA02
–25 0
50 100 125
TYPICAL
GUARANTEED
MAXIMUM
GUARANTEED
MINIMUM
Output Voltage