SiM3U1xx
Preliminary Rev. 0.8
21
Table 3.10. SAR ADC
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Resolution
N
bits
12 Bit Mode
12
Bits
10 Bit Mode
10
Bits
Supply Voltage Requirements
(VDD)
V
ADC
High Speed Mode
2.2
—
3.6
V
Low Power Mode
1.8
—
3.6
V
Throughput Rate
(High Speed Mode)
f
S
12 Bit Mode
—
—
250
ksps
10 Bit Mode
—
—
1
Msps
Throughput Rate
(Low Power Mode)
f
S
12 Bit Mode
—
—
62.5
ksps
10 Bit Mode
—
—
250
ksps
Tracking Time
t
TRK
High Speed Mode
230
—
—
ns
Low Power Mode
450
—
—
ns
SAR Clock Frequency
f
SAR
High Speed Mode
—
—
16.24
MHz
Low Power Mode
—
—
4
MHz
Conversion Time
t
CNV
10-Bit Conversion,
SAR Clock = 16 MHz,
APB Clock = 40 MHz.
762.5
ns
Sample/Hold Capacitor
C
SAR
Gain = 1
—
5
—
pF
Gain = 0.5
—
2.5
—
pF
Input Pin Capacitance
C
IN
High Quality Inputs
—
18
—
pF
Normal Inputs
—
20
—
pF
Input Mux Impedance
R
MUX
High Quality Inputs
—
300
—
Normal Inputs
—
550
—
Voltage Reference Range
V
REF
1
—
V
DD
V
Input Voltage Range*
V
IN
Gain = 1
0
—
V
REF
V
Gain = 0.5
0
—
2xV
REF
V
Power Supply Rejection Ratio
PSRR
ADC
—
70
—
dB
DC Performance
Integral Nonlinearity
INL
12 Bit Mode
—
±1
±1.9
LSB
10 Bit Mode
—
±0.2
±0.5
LSB
Differential Nonlinearity
(Guaranteed Monotonic)
DNL
12 Bit Mode
–1
±0.7
1.8
LSB
10 Bit Mode
—
±0.2
±0.5
LSB
*Note:
Absolute input pin voltage is limited by the lower of the supply at VDD and VIO.