LT1009 Series - 2.5V Reference
Features
- Click Here for Military Performance (JAN Class S) Datasheet - you will be directed to slash sheet at Defense Supply Center Columbus.
- 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
- Available in 8-Lead SO and MSOP Packages and 3-Lead TO-92 Package
Typical Application
Description
The LT1009 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 tolerance 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.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT1009CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1009CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1009CZ#PBF | TO-92 | Z | C | 05-08-1410 | Yes |
| LT1009CZ#TRPBF | TO-92 | Z | C | 05-08-1410 | Yes |
| LT1009IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1009IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1009IZ#PBF | TO-92 | Z | I | 05-08-1410 | Yes |
| LT1009IZ#TRPBF | TO-92 | Z | I | 05-08-1410 | Yes |
| LT1009MH | TO-46 | H | M | 05-08-1340 | No |
| LT1009S8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1009S8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1009CMS8#PBF | MS-8 | C | $2.25 | $1.85 | Yes | |
| LT1009CMS8#TRPBF | MS-8 | C | $1.91 | Yes | ||
| LT1009CZ#PBF | TO-92 | C | $1.58 | $1.30 | Yes | |
| LT1009CZ#TRPBF | TO-92 | C | $1.36 | Yes | ||
| LT1009IS8#PBF | SO-8 | I | $3.00 | $2.45 | Yes | |
| LT1009IS8#TRPBF | SO-8 | I | $2.51 | Yes | ||
| LT1009IZ#PBF | TO-92 | I | $2.75 | $2.25 | Yes | |
| LT1009IZ#TRPBF | TO-92 | I | $2.31 | Yes | ||
| LT1009MH | TO-46 | M | $22.00 | No | ||
| LT1009S8#PBF | SO-8 | C | $2.08 | $1.75 | Yes | |
| LT1009S8#TRPBF | SO-8 | C | $1.81 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Applications
- Reference for 5V Systems
- 8-Bit A/D and D/A Reference
- Digital Voltmeters
- Current Loop Measurement and Control Systems
- Power Supply Monitor
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LT1009
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
