upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 791
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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A/D Converter (ADC)
Figure 20-11
Figure 20-12
(3)
(4)
Quantization error
This is an error of ±1/2 LSB that inevitably occurs when an analog value is
converted into a digital value. Because the A/D Converter converts analog
input voltages in a range of ±1/2 LSB into the same digital codes, a
quantization error is unavoidable.
This error is not included in the overall error, zero-scale error, full-scale error,
integral linearity error, or differential linearity error in the characteristics table.
Quantization error
Zero-scale error
This is the difference between the actually measured analog input voltage and
its theoretical value when the digital output changes from 0…000 to 0…001
(1/2 LSB).
Zero-scale error
Preliminary User’s Manual U17566EE1V2UM00
1 ...... 1
0 ...... 0
111
100
011
010
001
000
0
1/2 LSB
−1
Zero-scale error
0
1
Analog input (LSB)
Analog input
1/2 LSB
Ideal line
2
Quantization error
3
AV
AV
REF
REF
Chapter 20
791
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