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Note: Numeric values are approximate.
Table 15-5 Analog Input Pin Ratings
Item
Analog input capacitance
Allowable signal-source impedance
Note: * When V
CC
7. A/D Conversion Accuracy Definitions: A/D conversion accuracy in the H8/3048 Series is
defined as follows:
•
Resolution:..................Digital output code length of A/D converter
•
Offset error:.................Deviation from ideal A/D conversion characteristic of analog input
•
Full-scale error:...........Deviation from ideal A/D conversion characteristic of analog input
•
Quantization error:......Intrinsic error of the A/D converter; 1/2 LSB (figure 15-9)
•
Nonlinearity error: ......Deviation from ideal A/D conversion characteristic in range from zero
•
Absolute accuracy:......Deviation of digital value from analog input value, including offset
10 kΩ
AN
to AN
0
7
Figure 15-8 Analog Input Pin Equivalent Circuit
≤ 12 MHz.
ø
= 4.0 V to 5.5 V and
voltage required to raise digital output from minimum voltage value
0000000000 to 0000000001 (figure 15-10)
voltage required to raise digital output from 1111111110 to
1111111111 (figure 15-10)
volts to full scale, exclusive of offset error, full-scale error, and
quantization error.
error, full-scale error, quantization error, and nonlinearity error.
To A/D converter
20 pF
min
max
—
20
—
10*
541
Unit
pF
kΩ
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