ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 281

• Manufacturer Part Number: ST7FMC1K2B3
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

12.14 10-BIT ADC CHARACTERISTICS
Subject to general operating conditions for V
Figure 157. R
Symbol
R
V
C
R
C
f
V
t
f
AREF
ADC
ADC
AREF
I
AIN
ADC
AIN
lkg
AIN
AIN
45
40
35
30
25
20
15
10
5
0
Analog Reference Voltage
ADC clock frequency
Conversion voltage range
Positive input leakage current for
analog input
Negative input leakage current on
analog pins
External input impedance
External capacitor on analog input
Variation freq. of analog input signal
Internal sample and hold capacitor
Conversion time (Sample+Hold)
- Sample capacitor loading time
- Hold conversion time
Conversion time (Sample+Hold)
- Sample capacitor loading time
- Hold conversion time
Analog Reference Input Resistor
0
AIN
max. vs f
Parameter
10
C
PARASITIC
ADC
(pF)
30
with C
1)
2 MHz
1 MHz
70
AIN
=0pF
V
adjacent analog pin
f
ADSTS bit in MCCBCR
register = 0
f
ADSTS bit in MCCBCR
register = 1
CPU
CPU
IN
DD
<
=8MHz, f
=8MHz, f
, f
V
3)
SS,
OSC
Conditions
| I
, and T
IN
Figure 158. Recommended C
ADC
ADC
|< 400µA on
1000
100
=4MHz,
=4MHz,
0.1
10
1
A
unless otherwise specified.
0.01
V
Min
SSA
3
0.1
f
AIN
(KHz)
ST7MC1xx/ST7MC2xx
Typ
3.5
6.5
11
5
10
16
10
6
4
1
AIN
Cain 10 nF
Cain 22 nF
Cain 47 nF
158
157
Figure
Figure
V
Max
V
see
AREF
±1
& R
4
6
DD
2)3)4)
and
10
AIN values.
281/309
1/f
1/f
Unit
MHz
μA
μA
Hz
kΩ
pF
pF
kΩ
μs
μs
V
V
ADC
ADC
4)