sx8723s Semtech Corporation, sx8723s Datasheet - Page 47
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sx8723s
Manufacturer Part Number
sx8723s
Description
Zoomingadc For Sensing Data Acquisition
Manufacturer
Semtech Corporation
Datasheet
1.SX8723S.pdf
(68 pages)
- Current page: 47 of 68
- Download datasheet (2Mb)
Revision 1.0
© Semtech
Table 32. RegACCfg5[0x57]
10.2.4 Mode Registers
Table 33. RegMode[0x70]
(1)
(2)
ADVANCED COMMUNICATIONS & SENSING
Bit
7
6
5:1
0
Bit
7
6
5:4
3
2
1
0
The chop control is to allow chopping of the internal bandgap reference. This may be useful to help eliminate bandgap related internal
offset voltage and 1/f noise. The bandgap chop state may be forced High or Low, or may be set to toggle during conversion at either the
same rate or half the rate of the Elementary Conversion. (See Conversion Sequence in the ZoomingADC description).
The internal charge pump may be forced On when V
pump increase the current consumption. If the ADC is not being run at full rate or full accuracy then it may operate sufficiently well when
V
BATT
Name
Busy
Def
Amux
Vmux
Name
-
-
Chopper
MultForceOn
MultForceOff
VrefD0Out
VrefD1In
is less than 3V and internal charge pump forced Off.
February 2011
Mode
r
rw
rw
rw
Mode
r
r
rw
rw
rw
rw
rw
Reset
0
0
00000
0
Reset
1
0
00
0
1
0
0
BATT
Page 47
supply is below 3V or Off when V
Description
ADC activity flag
Selects ADC and PGA default configuration, starts an ADC conversion
Input channel configuration selector
Reference channel selector
0 : V
1 : V
Description
reserved
reserved
V
11 : Chop at N
10 : Chop at N
01 : Chop state=1
00 : Chop state=0
Force charge pump On. Takes priority.
Force charge pump Off.
Enable V
Enable external V
REF
BATT
REF
chopping control.
REF
ZoomingADC for sensing data acquisition
output on D0 pin
ELCONV
ELCONV
REF
/2 rate
rate
on D1 pin
Note 1
Note 2
BATT
supply is above 3V. Enabling the charge
Note 2
SX8723S
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