The reference voltage is coupled with an analog IC TWO TERMINAL VOLTAGE REFERENCE.There are 3 pins on the voltage reference ic.Applications with 20mA input are suitable for the reference voltage.The output voltage is 1.235V.
LM285Z-1.2 Features
TWO TERMINAL VOLTAGE REFERENCE Analog IC
LM285Z-1.2 Applications
There are a lot of Rochester Electronics LM285Z-1.2 Voltage Reference applications.
Cellular phones, notebook computers, PDAs, GPSs, and DMMs
Computer workstations
Suitable for use with a wide range of video RAMDACs