LT1389
PRODUCTIONNanopower Precision Shunt Voltage Reference
- Part Models
- 10
- 1ku List Price
- Starting From $4.46
Part Details
- Initial Voltage Accuracy: 0.05%
- Low Operating Current: 800nA
- Low Drift: 10ppm/°C Max
- Less Than 1Ω Dynamic Impedance
- Available in 1.25V, 2.5V, 4.096V and 5V SO-8 Packages
The LT1389 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 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 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.
Applications
- Portable Meters
- Precision Regulators
- A/D and D/A Converters
- Calibrators
Documentation
Data Sheet 1
Reliability Data 1
Application Note 2
Design Note 1
Technical Articles 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1389ACS8-1.25#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389ACS8-1.25#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-1.25#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-1.25#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-2.5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-2.5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-4.096#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-4.096#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1389BCS8-5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 8, 2024 - 24_0236 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT1389ACS8-1.25#PBF | PRODUCTION | |
| LT1389ACS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-1.25#PBF | PRODUCTION | |
| LT1389BCS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-2.5#PBF | PRODUCTION | |
| LT1389BCS8-2.5#TRPBF | PRODUCTION | |
| LT1389BCS8-4.096#PBF | PRODUCTION | |
| LT1389BCS8-4.096#TRPBF | PRODUCTION | |
| LT1389BCS8-5#PBF | PRODUCTION | |
| LT1389BCS8-5#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LT1389ACS8-1.25#PBF | PRODUCTION | |
| LT1389ACS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-1.25#PBF | PRODUCTION | |
| LT1389BCS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-2.5#PBF | PRODUCTION | |
| LT1389BCS8-2.5#TRPBF | PRODUCTION | |
| LT1389BCS8-4.096#PBF | PRODUCTION | |
| LT1389BCS8-4.096#TRPBF | PRODUCTION | |
| LT1389BCS8-5#PBF | PRODUCTION | |
| LT1389BCS8-5#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1389ACS8-1.25#PBF | PRODUCTION | |
| LT1389ACS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-1.25#PBF | PRODUCTION | |
| LT1389BCS8-1.25#TRPBF | PRODUCTION | |
| LT1389BCS8-2.5#PBF | PRODUCTION | |
| LT1389BCS8-2.5#TRPBF | PRODUCTION | |
| LT1389BCS8-4.096#PBF | PRODUCTION | |
| LT1389BCS8-4.096#TRPBF | PRODUCTION | |
| LT1389BCS8-5#PBF | PRODUCTION | |
| LT1389BCS8-5#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 2
- LT1389 - Voltage References
- LTC2066/LT1389 Demo Circuit - Precision Ultralow Power High Side Current Sense
Models for the following parts are available in LTspice:
- LT1389-1.25
- LT1389-2.5
- LT1389-4.096
- LT1389-5
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Reference Designs
