str755fvx STMicroelectronics, str755fvx Datasheet - Page 64

• Manufacturer Part Number: str755fvx
• Description: Arm7tdmi-s, 32-bit Mcu With Flash, Smi, 3 Std 16-bit Timers Pwm Timer, Fast 10-bit Adc, I2c, Uart, Ssp, Usb And Can
• Manufacturer: STMicroelectronics

Electrical parameters
3.3.12
64/71
10-bit ADC characteristics
Subject to general operating conditions for V
specified.
Table 40.
1. Unless otherwise specified, typical data are based on T
2. C
3. Depending on the input signal variation (f
4. Calibration is needed once after each power-up.
Symbol
t
C
R
C
CONV
f
V
I
t
ADC
ADC
I
CAL
and are not tested.
the pad capacitance (3 pF). A high C
f
allow the use of a larger serial resistor (R
ADC
AIN
lkg
AIN
AIN
ADC
PARASITIC
should be reduced.
ADC clock frequency
Conversion voltage range
External input impedance
External capacitor on analog
input
Induced input leakage current
Internal sample and hold
capacitor
Calibration Time
Total Conversion time
(including sampling time)
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus
10-bit ADC characteristics
Parameter
PARASITIC
AIN
AIN
), C
). It is valid for all f
+400 µA injected
on any pin
-400 µA injected
on any pin
except specific
adjacent pins in
Table 41
-400µA injected
on specific
adjacent pins in
Table 41
Sunk on
V
f
f
CK_ADC
CK_ADC
DDA_ADC
value will downgrade conversion accuracy. To remedy this,
Conditions
AIN
DDA_ADC
can be increased for stabilization time and reduced to
=8 MHz
=8 MHz
A
=25°C. They are given only as design guidelines
, f
ADC
PCLK
V
30 (11 for sampling + 19 for
frequencies ≤ 8 MHz.
SSA_ADC
Successive Approximation)
Min
0.4
, and T
TBD
725.25
A
Typ
5802
3.75
3.5
3.7
40
(2)(3)(4)
unless otherwise
(1)
V
DDA_ADC
Max
8
1
1
STR750F
1/f
1/f
MHz
Unit
mA
kΩ
pF
µA
µA
µA
pF
µs
µs
V
ADC
ADC