EFM8BB2 Datasheet, PDF (18/55 Pages) Silicon Laboratories – The EFM8BB2 highlighted features are listed below

4.1.8 ADC
Table 4.8. ADC
Parameter
Resolution
Throughput Rate
(High Speed Mode)
Throughput Rate
(Low Power Mode)
Tracking Time
Power-On Time
SAR Clock Frequency
Conversion Time
Sample/Hold Capacitor
Input Pin Capacitance
Input Mux Impedance
Voltage Reference Range
Input Voltage Range¹
Power Supply Rejection Ratio
DC Performance
Integral Nonlinearity
Differential Nonlinearity (Guaran-
teed Monotonic)
Offset Error
Offset Temperature Coefficient
Symbol
Test Condition
N_bits
12 Bit Mode
10 Bit Mode
f_S
12 Bit Mode
10 Bit Mode
f_S
12 Bit Mode
10 Bit Mode
t_TRK
High Speed Mode
Low Power Mode
t_PWR
f_SAR
High Speed Mode,
Reference is 2.4 V internal
High Speed Mode,
Reference is not 2.4 V internal
Low Power Mode
t_CNV
10-Bit Conversion,
SAR Clock = 12.25 MHz,
System Clock = 24.5 MHz.
C_SAR
Gain = 1
Gain = 0.5
C_IN
R_MUX
V_REF
V_IN
Gain = 1
Gain = 0.5
PSRR_ADC
INL
DNL
E_OFF
TC_OFF
12 Bit Mode
10 Bit Mode
12 Bit Mode
10 Bit Mode
12 Bit Mode, VREF = 1.65 V
10 Bit Mode, VREF = 1.65 V
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EFM8BB2 Data Sheet
Electrical Characteristics
Min
Typ
Max
Unit
12
Bits
10
Bits
—
—
200
ksps
—
—
800
ksps
—
—
62.5
ksps
—
—
250
ksps
230
—
—
ns
450
—
—
ns
1.2
—
—
μs
—
—
6.25
MHz
—
—
12.5
MHz
—
—
1.1
4
MHz
μs
—
5
—
pF
—
2.5
—
pF
—
20
—
pF
—
550
—
Ω
1
—
V_DD
V
0
—
V_REF
V
0
—
2xV_REF
V
—
70
—
dB
—
±1
±2.3
LSB
—
±0.2
±0.6
LSB
-1
±0.7
1.9
LSB
—
±0.2
±0.6
LSB
-3
0
3
LSB
-2
0
2
LSB
—
0.004
—
LSB/°C
Rev. 1.1 | 17