78M6610+LMU Data Sheet
Current Configuration Examples
Conductor A
IA
78M6610+LMU
A3
S1
S3
A2
IN
IA = +1*S1 +0*S3
Conductor N
Conductor B
Conductor A
Conductor N
Conductor B
IB = +0*S1 +1*S3
A4
A5
IB
IA
78M6610+LMU
A3
A2
S1
S3
IN
IA = +1*S1 +0*S3
IB = -1*S1 -1*S3
A5
A4
IB
Figure 15. Current Configuration Examples
Pre-Amp
By default, the full-scale signal that can be applied to the current inputs is V3P3A ±250mVpk
(176.78mVRMS). This setting provides the widest dynamic range and is recommended for most
applications.
For applications requiring a much lower value shunt resistor, an optional pre-amplifier with an 8x gain is
included for the current inputs. The maximum input signal applied to the current inputs in this case would
be is V3P3A ±31.25mVpk.
CONFIG[21:20]
00
01
10
11
8x Gain Enable
none
S1
S3
both
The gain is set by a ratio of internal resistors with one of the resistors in series from the input pad to the
pre-amp itself. As such, the device must only be directly connected to a shunt with minimal resistance
when using the pre-amp.
24
Rev 0
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
