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Description

General part information

LT1009 Series

The LT1009 reference circuit is a precision-trimmed 2.5-V shunt regulator featuring low dynamic impedance and a wide operating current range. The maximum initial tolerance is ±5 mV in the LP package and ±10 mV in the D and PW packages. The reference tolerance is achieved by on-chip trimming, which minimizes the initial voltage tolerance and the temperature coefficient,VZ.

Although the LT1009 needs no adjustments, a third terminal (ADJ) allows the reference voltage to be adjusted ±5% to eliminate system errors. In many applications, the LT1009 can be used as a terminal-for-terminal replacement for the LM136-2.5, which eliminates the external trim network.

The LT1009 uses include 5-V system references, 8-bit analog-to-digital converter (ADC) and digital-to-analog converter (DAC) references, and power-supply monitors. The device also can be used in applications such as digital voltmeters and current-loop measurement and control systems.

Technical Specifications

Parameters and characteristics for this part

SpecificationLT1009IPWE4
Current - Cathode400 µA
Current - Output10 mA
Mounting TypeSurface Mount
Operating Temperature (Max)85 °C
Operating Temperature (Min)-40 °C
Output TypeFixed
Package Length0.173 in
Package Name8-TSSOP
Package Width4.4 mm
Reference TypeShunt
Temperature Coefficient35 ppm/°C
Tolerance0.4 %
Voltage - Output (Min/Fixed)2.5 V

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