My app uses a JFET..
What are some ways to temperature compensate a common source JFET DC amplifier.
Vdd=5V | 10K | +------------Vout (biased for 50% Vdd) |d signal--->[ N JFET |s | Gnd
'DC' amplifier.
Details:
1) The signal does contain a stable bias voltage. 2) Temp range: 20C to 50C 3) Vout thermal error of +/-10mVdc. 4) BW: DC to 2MhzI'm guessing compensation by:
1) PTC or NTC resistor 2) Use another JFET and feed in anti drift. 3) Find a special jfet (IC??)