I am FAE in Japanese distributor.
Our customer evaluates CN0396 circuit and tries to simulate by LTSPICE.
Could you provide LTSPICE model of AlphaSenseCOH-A2 ?
Is this the same question as:
You will need to contact the manufacturer of the AlphaSense COH-A2 for any details beyond what is listed in their datasheet - we (ADI) cannot guess about exactly how the sensor works. This question should be answered in terms of the AlphaSense recommendations - CN0396 follows the circuit topology recommended in Figure 1 here:
Note that the Alphasense document allows for modification of R1, R2, C1, C2 values.
We are also following the recommendation on page 2:
"It is best to allow ±1.1V swing on IC2 (plus any imposed bias voltage)" We are operating the ADA4528-1 on a 3.3V supply, and the bias voltage is 1.2V (supplied by ADR3412 reference.) The ADA4528-1 is rail-to-rail out, with a worst-case headroom requirement of 60mV at the negative supply (ground) and 40mV to the positive supply (3.3V.)