LT1009 Datasheet | Linear Technology

LT1009 Series 2.5V Reference Features n Maximum Initial Tolerance: 0.2% n Guaranteed Temperature Stability n Maximum 0.6Ω Dynamic Impedance n Wide Operating Current Range n Directly Interchangeable with LM136 for Improved Performance n No Adjustments Needed for Minimum Temperature Coefficient n Available in 8-Lead SO and MSOP Packages and 3-Lead TO-92 Package APPLICATIONS n Reference for 5V Systems n 8-Bit A/D and D/A Reference n Digital Voltmeters n Current Loop Measurement and Control Systems n Power Supply Monitor DESCRIPTION The LT®1009 is a precision trimmed 2.5V shunt regulator diode featuring a maximum initial tolerance of only ±5m V. 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. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 2.5V Reference 5V TO 35V 3.6k LT1009 OUTPUT 10k- TRIM - DOES NOT AFFECT TEMPERATURE COEFFICIENT. ±5% TRIM RANGE 1009 TA01 REFERENCE VOLTAGE (V) Output Voltage GUARANTEED MAXIMUM TYPICAL GUARANTEED MINIMUM - 50 - 25 0 25 50 75 TEMPERATURE (°C) 100...