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Rev. 0.1 6/07 Copyright © 2007 by Silicon Laboratories Si85xx-TB UG
Si85xx-TB UG
Si85
XX
U
NIDIRECTIONAL
AC C
URRENT
S
ENSOR
T
ARGET
B
OARD
U
SER
’
S
G
UIDE
The Si85xx products are unidirectional ac current sensors available with full scale current sense input ranges of 5,
10, and 20 A. Si85xx products are ideal upgrades for older current-sensing technologies offering size, performance
and cost advantages over current transformers, Hall Effect devices, DCR circuits, and other approaches. The
Si85xx are extremely low-loss, adding less than 1.3 mΩ of series resistance and less than 2 nH series inductance
in the sensing path at 25 ºC. Current-sensing terminals are isolated from the other package pins to a maximum
voltage of 1,000 VDC.
1. Kit Contents
The Si85xx Unidirectional AC Current Sensor Development Kit contains the following items:
10 Amp Si8512 based evaluation board
Si85xx Unidirectional AC Current Sensor Target Board User's Guide (this document)
2. Hardware Overview
The Si85xx Target Board (Si85xx-TB, see Figure 1) provides a means to evaluate the ac current sensor in an
existing application. It is meant to be soldered directly into the users existing power supply. The board comes with
the Si8512 installed and provides a 10 Amp full scale input sense range and a 2.0 V full scale output voltage. For
more details on the Si8512, refer to the Si85xx Data Sheet.
Figure 1. Si85xx-TB Overview