Multimeter integrated circuit detection method

Commonly used detection methods for integrated circuits include online measurement , off-line measurement and substitution.


1. Off-line measurement
When the integrated circuit is not soldered into the circuit, the DC resistance value between its pins is measured and compared with the DC resistance value between the pins of a known normal integrated circuit of the same model to determine whether it is normal.

2. Online measurement

The online measurement method uses voltage measurement, resistance measurement and current measurement methods to determine whether the integrated circuit is damaged by measuring the voltage, resistance and current values ​​of each pin of the integrated circuit on the circuit.

3. Substitution method The
substitution method replaces the tested integrated circuit with a known intact integrated circuit of the same model and specification to determine whether the integrated circuit is damaged.