AN_6610_107 78M6610+PSU Hardware Design Guidelines
Rev. 0 3
2.1 Sensor Connections
The basic connections for a shunt-based system are represented below.
Shunt
NEUTRAL
LINE
750
AVN
INPUT
750
AVP
NTC
ATEMP
100nF
1000pF
1000pF
100nF
750
1000pF
100nF
AIP
AIN
1M
1M
100nF
LOAD
78M6610+PSU
V
3P3
V
3P3
V
3P3
Figure 2: Basic Connection Diagram on Shunt-Based Systems
The 78M6610+PSU makes use of a single 3.3 VDC supply (V
3P3
) that also represents the reference
potential for the following analog inputs:
• AVP/AVN used to measure the line voltage.
• AIP/AIN used to measure the current.
• ATEMP1 and ATEMP2 used to measure external temperature.
Do not tie the ground of the 78M6610+PSU directly to earth ground when using shunts. See
the Safety Precautions section.
