LT1389
LT1389 is Nanopower Precision Shunt Voltage Reference manufactured by Linear Technology.
- Part of the LT1 comparator family.
- Part of the LT1 comparator family.
LT1389 Nanopower Precision Shunt Voltage Reference
Features s s s s s
DESCRIPTIO
Initial Voltage Accuracy: 0.05% Low Operating Current: 800n A Low Drift: 10ppm/°C Max Less Than 1Ω Dynamic Impedance Available in 1.25V, 2.5V, 4.096V and 5V SO-8 Packages
U APPLICATIO S s s s s
The LT ®1389 is a nanopower, precision shunt voltage reference. The bandgap reference uses trimmed precision thin-film resistors and improved curvature correction techniques to achieve 0.05% initial voltage accuracy with guaranteed 10ppm/°C maximum temperature drift. Voltage regulation is maintained to an ultralow 800n A operating current. Advances in design, processing and packaging achieve low temperature cycling hysteresis. The LT1389 does not require an output pensation capacitor, but is stable with capacitive loads. Low dynamic 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 temperature drift are required.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Portable Meters Precision Regulators A/D and D/A Converters Calibrators
TYPICAL APPLICATIO
REFERENCE VOLTAGE CHANGE (m V)
1.5 1.0 0.5 0
- 0.5
- 1.0
- 1.5
- 2.0 0
IR = 0.8µA VOUT = 1.25V
5V 4.7M VOUT 1.25V LT1389-1.25
1389 TA01
Temperature Drift
20 40 50 30 TEMPERATURE (°C) 60 70
1389 TA02
ABSOLUTE
(Note 1)
AXI U
RATI GS
U U W PACKAGE/ORDER I FOR ATIO
ORDER PART NUMBER
TOP VIEW DNC- 1 DNC- 2 DNC- 3 GND 4 8 DNC- 7 DNC- 6 VOUT 5 GND
Operating Current 1 20m A 2 20m A 4 10m A 5V .................................................................... 10m A Forward Current .....................................................
