Other Parts Discussed in Thread: INA821, REF5050, REF3318, , TPS7A39
Based on my device it needs to be low noise between 0.1-20Hz. My +-5v is mainly for the ina821 instrumentation amplifier, which has a PSRR of 120db.
1.8VLDO(REF5050+REF3318) mainly provides voltage to two sensors(The total current of the two sensors is 300uA) to ensure that the same noise can be CMRR.
Would like to ask whether the circuit design needs to be improved or there is a defect?
The LM27762 says it supports up to +-5V output, if my +VOUT = 1.2 V × (R1 + R2) / R2 and -VOUT = –1.22 V × (R3 + R4) / R4 configuration exceeding +-5V will cause damage to the LM27762?
I can't perform temporal analysis because the computer can't figure it out for a long time.