sx8725c Semtech Corporation, sx8725c Datasheet - Page 46

• Manufacturer Part Number: sx8725c
• Description: Zoomingadc For Sensing Data Acquisition
• Manufacturer: Semtech Corporation

Revision 1.01
© Semtech
10.2.4 Mode Registers
Table 36. RegMode[0x70]
(1)
(2)
ADVANCED COMMUNICATIONS & SENSING
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
-
-
Chopper
MultForceOn
MultForceOff
VrefD0Out
VrefD1In
is less than 4.2V and internal charge pump forced Off.
January 2011
Mode
r
r
rw
rw
rw
rw
rw
Reset
1
0
00
0
1
0
0
BATT
supply is below 4.2V or Off when V
Page 46
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
chopping control.
REF
ZoomingADC for sensing data acquisition
output on D0 pin
ELCONV
ELCONV
REF
/2 rate
rate
on D1 pin
Note 2
Note 1
BATT
supply is above 4.2V. Enabling the charge
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Note 2
SX8725C
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