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LT1389

Nanopower Precision

Shunt Voltage Reference

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Initial Voltage Accuracy: 0.05%

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Low Operating Current: 800nA

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Low Drift: 10ppm/

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Less Than 1

Ω Dynamic Impedance

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Available in 1.25V, 2.5V, 4.096V and

5V SO-8 Packages

The LT

reference. The bandgap reference uses trimmed preci-

sion thin-film resistors and improved curvature correction

techniques to achieve 0.05% initial voltage accuracy with

guaranteed 10ppm/

°C maximum temperature drift. Volt-

age regulation is maintained to an ultralow 800nA operating

current. Advances in design, processing and packaging

achieve low temperature cycling hysteresis.

The LT1389 does not require an output compensation

capacitor, but is stable with capacitive loads. Low dy-

namic impedance makes the LT1389 reference easy to

use from unregulated supplies.

The LT1389 reference can be used as a high performance

upgrade to the LM185/LM385, LT1004, LT1034 and

LT1634 where lowest power and guaranteed tempera-

ture drift are required.

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Portable Meters

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Precision Regulators

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A/D and D/A Converters

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Calibrators

5V

4.7M

LT1389-1.25

1389 TA01

1.25V

TEMPERATURE (

°C)

0

1.5

30

1389 TA02

0

–1.0

10

20

40

–1.5

– 2.0

2.0

1.0

0.5

– 0.5

50

60

70

Temperature Drift

, LTC and LT are registered trademarks of Linear Technology Corporation.

DESCRIPTIO

FEATURES

APPLICATIO S

TYPICAL APPLICATIO