0
ACTIVE
Rating |
Catalog |
VO (V) |
2.5 |
Initial accuracy (max) (%) |
0.2 |
Iz for regulation (min) (µA) |
400 |
VO adj (min) (V) |
2.5 |
VO adj (max) (V) |
2.5 |
Reference voltage (V) |
Fixed |
Temp coeff (max) (ppm/°C) |
25 |
Operating temperature range (°C) |
-40 to 85 |
Iout/Iz (max) (mA) |
10 |
SOIC (D)-8-29.4 mm² 4.9 x 6
Max
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.
The LT1009C is characterized for operation from 0°C to 70°C. The LT1009I is characterized for operation from 40°C to 85°C.
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