sx8725 Semtech Corporation, sx8725 Datasheet - Page 33

• Manufacturer Part Number: sx8725
• Description: Sx8725 Zoomingadc? For Pressure And Temperature Sensing
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
Application Hints
Recommended Operation Mode and Registers Settings
Operation Mode
Registers Settings
RegACOutLsb
RegACOutMsb
RegACCfg0
RegACCfg1
RegACCfg2
RegACCfg3
RegACCfg4
RegACCfg5
V1.5 © 2007 Semtech Corp.
Register Name
VMUX
AMUX
PGA1 Gain
PGA2 Gain
PGA3 Gain
Total Offset
PGA2 Offset
PGA3 Offset
ADC Bias
PGA Bias
fs
Resolution
OSR
NELCONV
Continuous mode
Parameter
PGA1_G
START
IB_AMP_ADC[1:0]
BUSY
7
0
0
0
0
-
FIN[1:0]
01
10
Table 30 - Recommended Operation Mode Values
DEF
SET_NELC[1:0]
6
0
VBATT
VINP = AC3 & VINN = AC2
OFF
OFF
1
0
OFF
0
50
50
250
16
512
2
ON
01
IB_AMP_PGA[1:0]
PGA2_GAIN[1:0]
Table 31 - Registers Settings
5
ZoomingADC™ for Pressure and Temperature Sensing
01
Analog multiplexers
Bit Position
4
Value
OUT[15:8]
OUT[7:0]
PGA3_OFFSET[6:0]
PGA3_GAIN[6:0]
33
SET_OSR[2:0]
PGA
ADC
AMUX[4:0]
0001100
0000000
00001
110
3
PGA2_OFFSET[3:0]
2
ENABLE[3:0]
1001
0000
V/V
V/V
V/V
V/V
V/V
V/V
%
%
kHz
Bits
OverSamples / ElementaryConversion
ElementaryConversion / Conversion
-
CONT
1
1
VMUX
0
0
0
-
Units
www.semtech.com
Hexadecimal
XXXXXXXX
XXXXXXXX
SX8725
Value
0x0C
0x3A
0x59
0x80
0x00
0x02