MB95F613K datasheet(102/110 Pages) CYPRESS

102 / 110 page

Document Number: 002-04698 Rev. *A

Page 102 of 110

PRELIMINARY

MB95610H Series

18.5.3 Definitions of A/D Converter Terms

• Resolution

It indicates the level of analog variation that can be distinguished by the A/D converter.

When the number of bits is 10, analog voltage can be divided into 210 = 1024.

• Linearity error (unit: LSB)

It indicates how much an actual conversion value deviates from the straight line connecting the zero transition point (“0000000000”

  “0000000001”) of a device to the full-scale transition point (“1111111111”   “1111111110”) of the same device.

• Differential linear error (unit: LSB)

It indicates how much the input voltage required to change the output code by 1 LSB deviates from an ideal value.

• Total error (unit: LSB)

It indicates the difference between an actual value and a theoretical value. The error can be caused by a zero transition error, a

full-scale transition errors, a linearity error, a quantum error, or noise.

(Continued)

VFST

Ideal I/O characteristics

0x001

0x002

0x003

0x004

0x3FD

0x3FE

0x3FF

2 LSB

V0T

1 LSB

0.5 LSB

Total error

Analog input

0x001

0x002

0x003

0x004

0x3FD

0x3FE

0x3FF

Actual conversion

characteristic

Ideal characteristic

Actual conversion

characteristic

VNT

: A/D converter digital output value

: Voltage at which the digital output transits from 0x(N - 1) to 0xN

{1 LSB

× (N - 1) + 0.5 LSB}

VNT

Total error of digital output N

VNT - {1 LSB

× (N - 1) + 0.5 LSB}

1 LSB

[LSB]

VCC - VSS

1024

(V)

1 LSB =

VSS

VCC

VSS

VCC

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