Other Parts Discussed in Thread: TINA-TI
Tool/software:
We currently have some design issues with our CAN-bus reader and could use some advices.
The reader detect (non-intrusively) CAN signals via capacitive coupling planes on the PCBA and converts it to a TTL or CAN signal.
These planes are roughly 3pF.
We want to detect a differential signal around 2.5 Volt, but also detect other signals such as K-line and RS232, in a frequencies of 9600 to 1M baud.
J5 and J6 are the coupling planes.
The MPU U4 can be ignored, as it was just too convert the TTL signal from the compactor (U3) for other devices.
We want to read CAN-FD signals (1Mhz nominal bit rate and 8Mhz data bit rate) via this reader and have tested a few circuit in TINA-TI without success.
Could we receive some help/advice with which op-amp/comparator we could use for our instrument amplifier to get the desired output?
Preferably op-amp/comparators with a SOT23 housing.
