Category: Hardware
Product Number: ADR1000
The ADR1000 voltage reference contains a voltage reference consisting of a zener diode with a series NPN base emitter junction for temperature compensation, a temperature sensing NPN, Q2, and a heater resistor. The data sheet includes a 'typical connection diagram' which biases the base emitter junction of Q2 at a constant voltage, and uses the collector current of Q2 as the die temperature measurement.
Is there any reason not to use Q2 in a diode connected configuration, base connected to collector, for temperature sensing?
Thank you,
M.Reich