herunterladen
1
LT1029/LT1029A
1029afa
■
0.2% Output Tolerance
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0.6Ω Shunt Impedance
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700µA to 10mA Operating Current
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Pin Compatible with LM136-5
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20ppm/°C Max Drift
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Output Voltage Trim does not Affect Drift
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Can be Used as Positive or Negative Reference
The LT
®
1029 is a 5V bandgap reference intended for use
in the shunt or “Zener” mode, allowing it to be used as
either a positive or negative reference. The output is
pretrimmed to ± 0.2% accuracy with 20ppm/°C maximum
temperature drift. A trim pin allows additional output
adjustment for even more precise output voltage.
Operating current range for the LT1029 is 700µA to 10mA.
Extremely low dynamic impedance allows excellent
output regulation even with fluctuating operating current.
The LT1029 will replace an LM136-5 or LM336-5 and
simplify circuits using the “minimum temperature coeffi-
cient” trim network. The LT1029 does not require this
special network to meet its temperature drift specification;
these application network components are simply
removed. If output trimming is required for initial
accuracy, the diodes in the trim network should be
replaced with jumpers.
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A-to-D and D-to-A Converters
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Precision Regulators
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Precision Current Sources
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V to F and F to V Converters
5V Bandgap Reference
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
Output Voltage Drift
TYPICAL APPLICATIO
U
LT1029
LT1029
R1
10k
15V
5V
–5V
–15V
R2
10k
LT1029 • TA0
1
5.015
–50
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
5.010
5.005
5.000
4.995
4.990
4.895
–25 0 25 50 75 100 125
LT1029 • TA02
, LTC and LT are registered trademarks of Linear Technology Corporation.
