The LT®1009 is a precision trimmed 2.5V shunt regulatordiode featuring a maximum initial tolerance of only ±5mV.The low dynamic impedance and wide operating currentrange enhances its versatility. The 0.2% reference toleranceis achieved by on-chip trimming which not onlyminimizes the initial voltage tolerance but also minimizesthe 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 theLM136 and the external trim network eliminated.For a lower drift 2.5V reference, see the LT1019 data sheet.
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