There is a handy package SC used in this program.An external package of Tape & Reel (TR) encloses the voltage reference ic.It is able to handle 10mA input applications.It is possible to communicate at high quality through 1 channels.4.1V volts are output.
LM4040BIM7-4.1 Features
Channel Number: 1
LM4040BIM7-4.1 Applications
There are a lot of National Semiconductor LM4040BIM7-4.1 Voltage Reference applications.