STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 157
![BOARD EVAL BASED ON ST72264G1](/photos/9/9/90917/steval-isq002v1_sml.jpg)
STEVAL-ISQ002V1
Manufacturer Part Number
STEVAL-ISQ002V1
Description
BOARD EVAL BASED ON ST72264G1
Manufacturer
STMicroelectronics
Specifications of STEVAL-ISQ002V1
Main Purpose
Interface, PMBus
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ST72F264
Primary Attributes
The PMBus™ Interface Using the ST7 I2C Peripheral
Secondary Attributes
Firmware in C Language
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6423
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISQ002V1
Manufacturer:
STMicroelectronics
Quantity:
1
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13.12 10-BIT ADC CHARACTERISTICS
V
Figure 97. R
Figure 99. Analog Input equivalent circuit
Notes:
1. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10kΩ). Data
based on characterization results, not tested in production.
2. C
pacitance (3pF). A high C
3. This graph shows that depending on the input signal variation (f
decreased to allow the use of a larger serial resistor (R
Symbol
DD
t
C
CONV
R
C
f
V
f
45
40
35
30
25
20
15
10
ADC
PARASITIC
ADC
AIN
5
0
= 2.7 to 5.5V, T
AIN
AIN
AIN
0
ADC clock frequency
Conversion voltage range
Internal sample and hold capacitor
Conversion time
External input impedance
External capacitor on analog input
Variation frequency of analog input
signal
V
AIN
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad ca-
AIN
max. vs f
10
C
A
PARASITIC
R
Parameter
= -40°C to 85°C, unless otherwise specified
AIN
PARASITIC
(pF)
ADC
30
C
AIN
with C
value will downgrade conversion accuracy. To remedy this, f
4 MHz
2 MHz
1 MHz
AINx
70
AIN
=0pF
FLASH, f
ROM, f
2)
AIN)
Conditions
ADC
. It is valid for all f
ADC
V
=4MHz
DD
Figure 98. Recommended C
=4MHz
V
0.6V
V
0.6V
T
T
1000
AIN
100
0.1
10
1
ST72260Gx, ST72262Gx, ST72264Gx
), C
AIN
0.01
ADC
2kΩ(max)
can be increased for stabilization time and
I
±1µA
L
Min
V
0.5
frequencies ≤ 4MHz.
SS
0.1
f
AIN
(KHz)
10-Bit A/D
Conversion
Typ
112
3.5
28
14
6
1
ADC
AIN
Cain 10 nF
Cain 22 nF
Cain 47 nF
Figure 97
98
/R
Figure
should be reduced.
Max
and
see
V
1)2)3)
AIN
4
DD
10
ST72XXX
values
C
6pF
157/172
ADC
1/f
1/f
Unit
MHz
pF
kΩ
pF
Hz
µs
µs
V
ADC
ADC
3)
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