EZR32HG220 Datasheet, PDF (38/86 Pages) Silicon Laboratories – Consumer electronics

4.11 Analog Digital Converter (ADC)
EZR32HG220 Data Sheet
Electrical Specifications
Table 4.16. ADC
Parameter
Symbol
Test Condition
Input voltage range
V_ADCIN Single ended
V_ADCREFIN Differential
Input range of external reference
voltage, single ended and differen-
tial
V_ADCRE-
FIN_CH7
Input range of external negative
reference voltage on channel 7
V_ADCRE- See V_ADCREFIN
FIN_CH6
Input range of external positive ref- V_ADCCMIN See V_ADCREFIN
erence voltage on channel 6
Common mode input range
I_ADCIN
Input current
CMRR_ADC 2pF sampling capacitors
Analog input common mode rejec-
tion ratio
I_ADC
I_ADCREF 1 MSamples/s, 12 bit, external ref-
erence
C_ADCIN
10 kSamples/s 12 bit, internal 1.25
V reference, WARMUPMODE in
ADCn_CTRL set to 0b00
Average active current
R_ADCIN
10 kSamples/s 12 bit, internal 1.25
V reference, WARMUPMODE in
ADCn_CTRL set to 0b01
R_ADCFILT 10 kSamples/s 12 bit, internal 1.25
V reference, WARMUPMODE in
ADCn_CTRL set to 0b10
C_ADCFILT 10 kSamples/s 12 bit, internal 1.25
V reference, WARMUPMODE in
ADCn_CTRL set to 0b11
Current consumption of internal
voltage reference
f_ADCCLK Internal voltage reference
Input capacitance
t_ADCCONV
Input ON resistance
t_ADCACQ
Input RC filter resistance
t_AD-
CACQVDD3
Input RC filter/decoupling capaci-
tance
t_ADCSTART
ADC Clock Frequency
SNR_ADC
Min
0
-V_REF/2
1.25
0
0.625
0
─
─
─
─
─
─
─
─
─
1
─
─
─
Typ
Max
Unit
─
V_REF
V
─
V_REF/2
V
─
V_DD
V
─
V_DD - 1.1
V
─
V_DD
V
─
V_DD
V
<100
─
nA
65
─
dB
392
510
µA
67
─
µA
63
─
µA
64
─
µA
244
─
µA
65
─
µA
2
─
pF
─
─
MOhm
10
─
kOhm
250
─
fF
─
13
MHz
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