EFM32WG880 Datasheet, PDF (33/85 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

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Symbol
V_ADCCMIN
I_ADCIN
CMRR_ADC
I_ADC
I_ADCREF
C_ADCIN
R_ADCIN
R_ADCFILT
C_ADCFILT
f_ADCCLK
Parameter
Condition
Min
erence voltage on
channel 6
Common mode in-
put range
Input current
2pF sampling capacitors
Analog input com-
mon mode rejection
ratio
1 MSamples/s, 12 bit, external
reference
Average active cur-
rent
10 kSamples/s 12 bit, internal
1.25 V reference, WARMUP-
MODE in ADCn_CTRL set to
0b00
10 kSamples/s 12 bit, internal
1.25 V reference, WARMUP-
MODE in ADCn_CTRL set to
0b01
10 kSamples/s 12 bit, internal
1.25 V reference, WARMUP-
MODE in ADCn_CTRL set to
0b10
Current consump-
tion of internal volt-
age reference
Internal voltage reference
Input capacitance
Input ON resistance
Input RC filter resis-
tance
Input RC filter/de-
coupling capaci-
tance
ADC Clock Fre-
quency
6 bit
t_ADCCONV
8 bit
Conversion time
12 bit
t_ADCACQ
Acquisition time
Programmable
t_ADCACQVDD3
t_ADCSTART
Required acquisi-
tion time for VDD/3
reference
Startup time of ref-
erence generator
Typ
Max
Unit
0
V_DD V
<100
nA
65
dB
351
µA
67
µA
63
µA
64
µA
65
µA
2
1
10
250
pF
MOhm
kOhm
fF
13 MHz
7
ADC-
CLK
Cycles
11
ADC-
CLK
Cycles
13
ADC-
CLK
Cycles
1
256 ADC-
CLK
Cycles
2
µs
5
µs
2014-06-13 - EFM32WG880FXX - d0197_Rev1.40
33
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