Datasheet

DS12167 Rev 4 81/94
STM8L050J3 Electrical parameters
87
8.3.11 12-bit ADC1 characteristics
In the following table, data is guaranteed by design, not tested in production.
Table 44. ADC1 characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Analog supply voltage 1.8 - 3.6 V
V
REF+
Reference supply
voltage
2.4 V ≤ V
DDA
≤ 3.6 V
2.4 -
V
DDA
V
1.8 V ≤ V
DDA
≤ 2.4 V V
DDA
V
V
REF-
Lower reference voltage -
V
SSA
V
I
VDDA
Current on the VDDA
input pin
- - 1000 1450 µA
I
VREF+
Current on the VREF+
input pin
--
400
700
(peak)
(1)
µA
--
450
(average)
(1)
µA
V
AIN
Conversion voltage
range
-
0
(2)
-
V
REF+
-
T
A
Temperature range - -40 - 125 °C
R
AIN
External resistance on
V
AIN
on other channels - - 50
(3)
kΩ
C
ADC
Internal sample and hold
capacitor
on other channels - 16 - pF
f
ADC
ADC sampling clock
frequency
2.4 V ≤ V
DDA
≤ 3.6 V
without zooming
0.320 - 16 MHz
1.8 V ≤ V
DDA
≤ 2.4 V
with zooming
0.320 - 8 MHz
f
CONV
12-bit conversion rate
V
AIN
on all other
channels
--760kHz
f
TRIG
External trigger
frequency
---
t
conv
1/f
ADC
t
LAT
External trigger latency - - - 3.5 1/f
SYSCLK
t
S
Sampling time
V
AIN
on channels
V
DDA
< 2.4 V
0.86 - - µs
V
AIN
on channels
2.4 V ≤ V
DDA
≤ 3.6 V
0.41 - - µs
t
conv
12-bit conversion time
- 12 + t
S
1/f
ADC
16 MHz 1 µs
t
WKUP
Wakeup time from OFF
state
---3µs
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