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ADVANCED COMMUNICATIONS & SENSING
17.2.3 Sensor Connection to the
The schematic below shows how the sensor is connected to the SX8724S using the pins AC2–AC3 as
differential input. The default VMUX setting will select V
The sensor will be biased with V
the register setting.
BIAS
Vs
VOUT+
VOUT-
GND
ACS - Revision 1.0
© Semtech Corp.
SX8724S
when D0 is set as digital output high state. It will be switched on/off by
BATT
VBATT
D0
VSS
AMUX
VSS
VREF
AC3
AC2
S
Analog Inputs
Reference Inputs
V
REF,ADC
VBATT
VSS
VREF
VSS
VMUX
Figure 30. Sensor schematic connection to the SX8724S
May 2011
Evaluation Kit for SX8724S Data Acquisition System
–V
as reference inputs for the acquisition chain.
BATT
SS
V
V
IN
D1
±
±
Vin
Vin
±
Voff
PGA1
PGA2
ANALOG ZOOM
Page 37
SX8724SEVK
USER GUIDE
V
V
D2
IN,ADC
±
±
Vin
Vin
±
±
Voff
Vref
PGA3
www.semtech.com
ADC
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