I'm trying to control the TEC of the laser diode through ADN8834 IC.
In the design, ADN8834 was operated using the reference voltage from the outside, but when the reference voltage pin of ADN8834 was left in NC state, the IC did not operate.
Datasheet doesn't mention the reference pin processing when using an external reference, but if not, do I have to connect the Capacitor and process it as GND?
When I connected the Capacitor and processed it as GND, the IC works, so I would appreciate it if you could reply to this.