STMicroelectronics Discovery kit for STM32L151/152 line - with STM32L152RC MCU STM32L152C-DISCO STM32L152C-DISCO Hoja De Datos
Los códigos de productos
STM32L152C-DISCO
DocID022799 Rev 6
103/132
STM32L15xCC STM32L15xRC STM32L15xUC STM32L15xVC
Electrical characteristics
111
Figure 30. Maximum dynamic current consumption on V
REF+
supply pin during ADC
conversion
General PCB design guidelines
Power supply decoupling should be performed as shown in
,
depending on whether V
REF+
is connected to V
DDA
or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed as close as possible to the chip.
ADC clock
Sampling (n cycles)
Conversion (12 cycles)
I
ref+
300µA
700µA
Table 58. R
AIN
max for f
ADC
= 16 MHz
(1)
Ts
(cycles)
Ts
(µs)
R
AIN
max (k
)
Multiplexed channels
Direct channels
2.4 V < V
DDA
< 3.6 V
1.8 V < V
DDA
< 2.4 V 2.4 V < V
DDA
< 3.6 V
1.8 V < V
DDA
< 2.4 V
4
0.25
Not allowed
Not allowed
0.7
Not allowed
9
0.5625
0.8
Not allowed
2.0
1.0
16
1
2.0
0.8
4.0
3.0
24
1.5
3.0
1.8
6.0
4.5
48
3
6.8
4.0
15.0
10.0
96
6
15.0
10.0
30.0
20.0
192
12
32.0
25.0
50.0
40.0
384
24
50.0
50.0
50.0
50.0
1. Guaranteed by design, not tested in production.