71M6531F-IM/F Maxim Integrated Products, 71M6531F-IM/F Datasheet - Page 63

• Manufacturer Part Number: 71M6531F-IM/F
• Description: IC ENERGY METER 256KB 68-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 71M6531F-IM/F

• Mounting Style: SMD/SMT
• Package / Case: QFN-68
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

pins configured as inputs do not require current-limiting resistors when they are connected to external 5 V
devices.
FDS 6531/6532 005
3
3.1
Figure 28
shunts are connected to the voltage and current inputs of the 71M6531.
3.2
All digital input pins of the 71M6531D/F and 71M6532D/F are compatible with external 5-V devices. I/O
v1.3
I
in
I
in
The analog input pins of the 71M65XX are designed for sensors with low source impedance. RC
filters with resistance values higher than those implemented in the Teridian Demo Boards should be
avoided.
1/N
Application Information
Connection of Sensors
Connecting 5-V Devices
through
Figure 29: CT with Single Ended (Left) and Differential Input (Right) Connection
I
out
Figure 30: Resistive Shunt (Left) and Rogowski Sensor (Right) Connection
R
Figure 30
R
© 2005-2010 TERIDIAN Semiconductor Corporation
Filter
show how resistive dividers, current transformers, Rogowski coils and resistive
V
in
Figure 28: Resistive Voltage Divider
VA = Vin * R
V
V3P3
IA
out
V
V3P3
IA
R
out
in
out
/(R
I
IN
I
1/N
in
out
R
+ R
out
I
OUT
1/N
in
)
Data Sheet 71M6531D/F-71M6532D/F
V
V
out
Vout = c*dI
OUT
VA
R
in
/dt
V
DIFF
V3P3A
IAP
IAN
InP
V3P3A
InN
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