SX8725S Datasheet, PDF (1/69 Pages) Semtech Corporation – ZoomingADC for sensing data acquisition ADVANCED COMMUNICATIONS & SENSING

ADVANCED COMMUNICATIONS & SENSING
SX8725S
ZoomingADC for sensing data acquisition
DATASHEET
DESCRIPTION
The SX8725S is a data acquisition system based on
Semtech's low power ZoomingADC™ technology. It
directly connects most types of miniature sensors
with a general purpose microcontroller.
With 1 differential input, it can adapt to multiple
sensor systems. Its digital outputs are used to bias or
reset the sensing elements.
APPLICATIONS
Industrial pressure sensing
Industrial temperature sensing
Industrial chemical sensing
Barometer
Compass
FEATURES
Up to 16-bit differential data acquisition
Programmable gain: (1/12 to 1000)
Sensor offset compensation up to 15 times full scale
of input signal
1 differential or 2 single-ended signal inputs
Programmable Resolution versus Speed versus
Supply current
Digital outputs to bias Sensors
Internal or external voltage reference
Internal time base
Low-power (250 uA for 16b @ 250 S/s)
SPI interface, 2 Mbps serial clock
ORDERING INFORMATION
DEVICE
PACKAGE
SX8725SWLTDT
MLPQ-W-16 4x4
- Available in tape and reel only
- WEEE/RoHS compliant, Pb-Free and Halogen Free.
REEL QUANTITY
1000
FUNCTIONAL BLOC DIAGRAM
Revision 1.0
© Semtech
SX8725S
+
-
+
+
VREF
-
-
AC0
AC1
AC2
AC3
PGA
ZoomingADC^TM
ADC
D0/VREF,OUT
D1/VREF,IN
CONTROL LOGIC
GPIO
CHARGE
PUMP
4MHz
OSC
SPI
February 2011
Page 1
VBATT
READY
SCLK
MOSI
MISO/READY
SS
VPUMP
VSS
MCU
www.semtech.com