参数资料
型号: ST7PLITE15BF0B3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 48/159页
文件大小: 2855K
代理商: ST7PLITE15BF0B3
ST7LITE1xB
141/159
ADC CHARACTERISTICS (Cont’d)
Figure 112. ADC Accuracy Characteristics with amplifier enabled
Note:
1. When the AMPSEL bit in the ADCDRL register is set, it is mandatory that fADC be less than or equal to 2 MHz. (if
fCPU=8MHz. then SPEED=0, SLOW=1).
EO
EG
1LSBIDEAL
1LSBIDEAL
VDD VSS
1024
--------------------------------
=
Vin (LSBIDEAL)
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
ET=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
EO=Offset Error: deviation between the first actual
transition and the first ideal one.
EG=Gain Error: deviation between the last ideal
transition and the last actual one.
ED=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
EL=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
Digital Result ADCDR
704
108
0
1
234567
701 702 703 704
(1)
(2)
ET
ED
EL
(3)
VSS
430mV
62.5mV
Vin (OPAMP)
Vin
Vout (ADC input)
Vmax
Vmin
430mV
0V
Noise
(OPAMP input)
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