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參數(shù)資料
| 型號： | ST7LITE19F1M6 |
| 英文描述： | ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
| 中文描述： | ST7LITE1 - 8單電壓閃存EEPROM的MEMORY.DATA位MCU。 ADC的。 4定時器。的SPI |
| 文件頁數(shù)： | 105/122頁 |
| 文件大?。?/td> | 1716K |
| 代理商： | ST7LITE19F1M6 |
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ST7LITE0, ST7SUPERLITE
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ADC CHARACTERISTICS
(Cont’d)
Figure 90. ADC Accuracy Characteristics with Amplifier enabled
Note:
When the AMPSEL bit in the ADCDRL register is set, it is mandatory that f
ADC
be less than or equal
to 2 MHz. (if f
CPU
=8MHz. then SPEED=0, SLOW=1).
Notes:
1) Data based on characterization results over the whole temperature range, not tested in production.
2)
For precise conversion results it is recommended to calibrate the amplifier at the following two points:
– offset at V
INmin
= 0V
– gain at full scale (for example V
IN
=250mV)
3) Monotonicity guaranteed if V
IN
increases or decreases in steps of min. 5mV.
E
O
E
G
1 LSB
IDEAL
V
in
(LSB
IDEAL
)
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
E
=Offset Error: deviation between the first actual
transition and the first ideal one.
E
=Gain Error: deviation between the last ideal
transition and the last actual one.
E
=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
E
=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
n
=Amplifier Offset
Digital Result ADCDR
n+5
n+4
n+3
n+2
n+1
0
n+7
n+6
1
2
3
4
5
6
7
100 101 102 103
(1)
(2)
E
T
E
D
E
L
(3)
250 mV
V
SS
1LSBIDEAL
VDDA
--------103
–
=
Symbol
V
DD(AMP)
V
IN
V
OFFSET
V
STEP
Linearity
Gain factor
Vmax
Vmin
Parameter
Conditions
Min
4.5
0
Typ
Max
5.5
250
Unit
V
mV
mV
mV
Amplifier operating voltage
Amplifier input voltage
Amplifier offset voltage
Step size for monotonicity
3)
Output Voltage Response
Amplified Analog input Gain
2)
Output Linearity Max Voltage
Output Linearity Min Voltage
V
DD
=5V
200
5
Linear
7
1)
2.05
0
1)
8
9
1)
2.4
0.25
V
INmax
= 250mV,
V
DD
=5V
2.2
0.22
V
V
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