The currently used Opamp is the OPA335 from texas instruments.
Hopefully we can find something less expensive.
The requirements for the opamp are probably:
- Low offset voltage
- Speed faster then the targeted maximum PWM frequency to be able to sample the current on the phases (>30khz)
- Rail to rail
Anything else?
Can anyone help with this search?
The currently used Opamp is the OPA335 from texas instruments.
Hopefully we can find something less expensive.
The requirements for the opamp are probably:
Anything else?
Can anyone help with this search?