SX8725E083TRT Semtech, SX8725E083TRT Datasheet - Page 10

• Manufacturer Part Number: SX8725E083TRT
• Description: IC DAS PRESSURE/TEMP SENS 12MLPD
• Manufacturer: Semtech
• Series: ZoomingADC™r
• Type: Pressure/Temperature Sensorr

Specifications of SX8725E083TRT

• Input Type: Differential
• Output Type: Digital
• Interface: 2-Wire
• Mounting Type: Surface Mount
• Package / Case: 12-MLPD
• For Use With: XE8000EV121 - BOARD EVAL FOR SX8723/24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: SX8725E083TR

ADVANCED COMMUNICATIONS & SENSING
Circuit Description
General Description
The SX8725 is a complete low-power acquisition path with programmable gain, acquisition speed and
resolution.
Block Diagram
VREF
The internally generated V
stable voltage reference for the ZoomingADC.
This reference voltage is directly connected to one of the ZoomingADC reference multiplexer inputs.
The bandgap voltage stability is only guaranteed for V
2.4V, the bandgap voltage could reduce by up to 50mV.
The bandgap has relatively weak output drive so it is recommended that if the bandgap is required as a signal
input then PGA1 must be enabled with Gain = 1.
V1.8 © 2009 Semtech Corp.
D0/REF
D1/REF
AC2
AC3
OUT
IN
SX8725
V
REF
REF
+
-
is a trimmed bandgap reference with a nominal value of 1.22V that provides a
AC1
+
+
AC0
-
-
GPIO
Figure 3 - SX8725 Block Diagram
ZoomingADC™ for Pressure and Temperature Sensing
PGA
CHARGE
PUMP
CONTROL LOGIC
10
BATT
ZoomingADC
voltages of 3V and above. As V
4MHz
OSC
ADC
I
2
C
TM
BATT
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READY
V
V
SDA
VSS
SCL
PUMP
BATT
drops down to
SX8725