STMicroelectronics STM32L151CB Manual page 93

STM32L151x6/8/B, STM32L152x6/8/B
Symbol
t
S
t
CONV
C
ADC
f
TRIG
f
TRIG
R
AIN
t
lat
t
latr
t
STAB
1. The V
REF+
external voltage reference).
2. The current consumption through V
- 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 sampling + 2) /16] x 400
= 450 µA at 1Msps
3. V
REF+
the package. Refer to
4. V must be tied to ground.
SSA
5. See Figure 56: R
Table 54. ADC characteristics (continued)
Parameter
(5)
Sampling time
Total conversion time
(including sampling time)
Internal sample and hold
capacitor
External trigger frequency
Regular sequencer
External trigger frequency
Injected sequencer
Signal source impedance
Injection trigger conversion
latency
Regular trigger conversion
latency
Power-up time
input can be grounded iif neither the ADC nor the DAC are used (this allows to shut down an
can be internally connected to V
Section 4: Pin descriptions
max for f
AIN ADC
Conditions
Direct channels
2.4 V ≤ V
DDA
Multiplexed channels
2.4 V ≤ V
DDA
Direct channels
1.8 V ≤ V
DDA
Multiplexed channels
1.8 V ≤ V
DDA
-
f = 16 MHz
ADC
-
Direct channels
Multiplexed channels
12-bit conversions
6/8/10-bit conversions
12-bit conversions
6/8/10-bit conversions
(5)
-
f = 16 MHz
ADC
-
f = 16 MHz
ADC
-
-
is composed of two parameters:
REF
and V can be internally connected to V
DDA REF-
for further details.
= 16 MHz for R limitation.
AIN
DocID17659 Rev 10
Electrical characteristics
Min Typ
0.25 -
≤ 3.6 V
0.56 -
≤ 3.6 V
0.56 -
≤ 2.4 V
1 -
≤ 2.4 V
4 -
1 -
4 to 384 (sampling
phase) +12 (successive
approximation)
-
16
-
- -
- -
- -
- -
- -
219 -
3.5 -
156 -
2.5 -
- -
SSA
Max Unit
-
-
µs
-
-
384 1/f
ADC
24.75 µs
1/f
ADC
-
pF
-
Tconv+1 1/f
ADC
Tconv 1/f
ADC
Tconv+2 1/f
ADC
Tconv+1 1/f
ADC
κΩ
50
281 ns
4.5 1/f
ADC
219 ns
3.5 1/f
ADC
3.5 µs
, depending on
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