Analog Devices LT1009 Product Info

• 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

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.

Applications

• Reference for 5V Systems
• 8-Bit A/D and D/A Reference
• Digital Voltmeters
• Current Loop Measurement and Control Systems
• Power Supply Monitor