SG1503/SG2503/SG3503
Precision 2.5-Volt Reference
Description
The SG1503 is a monolithic integrated circuit
implementing a self-contained precision voltage
reference generator. It is internally trimmed for ±1%
accuracy and requires less than 2mA quiescent
current. SG1503 can deliver greater than 10mA output
current while achieving total load and line induced
tolerances of less than 0.5%.
In addition to voltage accuracy, internal trimming
achieves a temperature coefficient of output voltage of
typically 10 ppm/°C. As a result, these references are
excellent choices for applications in critical
instrumentation and D-to-A converter systems. The
SG1503 is specified for operation over the full military
ambient temperature range of -55°C to 125°C, while
the SG2503 is designed for -25°C to 85°C and the
SG3503 for commercial applications of 0°C to 70°C.
Features
Output Voltage Trimmed to ±1%
Input Voltage Range of 4.5V to 40V
Temperature Coefficient of 10ppm/°C
Quiescent Current Typically 1.5mA
Output Current in excess of 10mA
Interchangeable with MC1503 and AD580
Application
Available to MIL-STD-883, ¶ 1.2.1
Available to DSCC
Standard Microcircuit Drawing (SMD)
®
Microsemi Level “S” Processing Available
Functional Diagram
VIN
I1 = I2
VO
1.25V
GND
Figure 1 · Functional Block Diagram
December 2014 Rev. 1.3a
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