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S6E2H1 Datasheet, PDF (145/159 Pages) SPANSION – processor version | |||
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S6E2H1 Series
Definition of 12-bit A/D Converter Terms
ï¯ Resolution:
ï¯ Integral Nonlinearity:
ï¯ Differential Nonlinearity:
Analog variation that is recognized by an A/D converter.
Deviation of the line between the zero-transition point
(0b000000000000 ââ 0b000000000001) and the full-scale transition point
(0b111111111110 ââ 0b111111111111) from the actual conversion
characteristics.
Deviation from the ideal value of the input voltage that is required to
change the output code by 1 LSB.
Integral Nonlinearity
Differential Nonlinearity
0xFFF
Actual conversion
0xFFE characteristics
{1 LSB(N-1) + VZT}
0xFFD
0x004
0x003
VFST
(Actually-
measured
value)
VNT
(Actually-measured
value)
Actual conversion
0x002
characteristics
Ideal characteristics
0x001
VZT (Actually-measured value)
0x(N+1) Actual conversion
characteristics
Ideal characteristics
0xN
0x(N-1)
0x(N-2)
V(N+1)T
(Actually-measured
value)
VNT
(Actually-measured
value)
Actual conversion characteristics
AVss
Analog input
AVRH
AVss
Analog input
AVRH
Integral Nonlinearity of digital output N =
VNT - {1LSB Ã (N - 1) + VZT}
1LSB
[LSB]
Differential Nonlinearity of digital output N =
V(N + 1) T - VNT
1LSB
- 1 [LSB]
1LSB =
VFST - VZT
4094
N:
VZT:
VFST:
VNT:
A/D converter digital output value.
Voltage at which the digital output changes from 0x000 to 0x001.
Voltage at which the digital output changes from 0xFFE to 0xFFF.
Voltage at which the digital output changes from 0x(N â 1) to 0xN.
Document Number: 001-98940 Rev.*A
Page 145 of 159
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