Electrical characteristics
STM32L162VC, STM32L162RC
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DocID022881 Rev 10
t
S
(5)
Sampling time
Direct channels
2.4 V
≤
V
DDA
≤
3.6 V
0.25
-
-
µs
Multiplexed channels
2.4 V
≤
V
DDA
≤
3.6 V
0.56
-
-
Direct channels
1.8 V
≤
V
DDA
≤
2.4 V
0.56
-
-
Multiplexed channels
1.8 V
≤
V
DDA
≤
2.4 V
1
-
-
-
4
-
384
1/f
ADC
t
CONV
Total conversion time
(including sampling time)
f
ADC
= 16 MHz
1
-
24.75
µs
-
4 to 384 (sampling phase) +12
(successive approximation)
1/f
ADC
C
ADC
Internal sample and hold
capacitor
Direct channels
-
16
-
pF
Multiplexed channels
-
-
f
TRIG
External trigger frequency
Regular sequencer
12-bit conversions
-
-
Tconv+1 1/f
ADC
6/8/10-bit conversions
-
-
Tconv
1/f
ADC
f
TRIG
External trigger frequency
Injected sequencer
12-bit conversions
-
-
Tconv+2 1/f
ADC
6/8/10-bit conversions
-
-
Tconv+1 1/f
ADC
R
AIN
(6)
Signal source impedance
-
-
50
k
Ω
t
lat
Injection trigger conversion
latency
f
ADC
= 16 MHz
219
-
281
ns
-
3.5
-
4.5
1/f
ADC
t
latr
Regular trigger conversion
latency
f
ADC
= 16 MHz
156
-
219
ns
-
2.5
-
3.5
1/f
ADC
t
STAB
Power-up time
-
-
-
3.5
µs
1. The Vref+ input can be grounded if neither the ADC nor the DAC are used (this allows to shut down an external voltage
reference).
2. The current consumption through VREF is composed of two parameters:
- one constant (max 300 µA)
- one variable (max 400 µA), only during sampling time + 2 first conversion pulses
So, peak consumption is 300+400 = 700 µA and average consumption is 300 + [(4 sa 2) /16] x 400 = 450 µA at
1Msps
3. V
REF+
can be internally connected to V
DDA
and V
REF-
can be internally connected to V
SSA
, depending on the package.
for further details.
4. V
SSA
or V
REF-
must be tied to ground.
5. Minimum sampling time is reached for an external input impedance limited to a value as defined in
.
6. External impedance has another high value limitation when using short sampling time as defined in
.
Table 56. ADC characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ Max
Unit