These pins are normally used as a return path for the loads of PWM outputs (current measuring feedback)
These kinds of pins have a small shunt resistor connected to ground
The shunt resistor is used to measure the current flowing through the load
Nothing prevents using these pins to measure currents from other sources as well
Electrical characteristics
|
Symbol |
Parameter |
Conditions |
Min |
Max |
Units |
|
RI |
Input Resistance |
|
0,21 |
0,23 |
Ω |
|
II |
Input Current |
Analog measuring range |
0 |
1,03 |
A |
|
(Note 1) |
|
1,4 |
A |
||
|
BW |
Input Low Pass Filter Bandwidth |
-3 dB cut-off frequency (Note 2) |
typ. 27 |
Hz |
|
|
IE |
Input Error |
II = 1 A; Calculated |
|
65 |
mA |
Note 1: Exceeding the max value might cause damage to input.
Note 2: 2nd order low pass filter
Functional block diagram