MC144110 Technical Data, Rev. 2

6

Freescale Semiconductor

Switching Characteristics

Figure 3. D/A Transfer Function

Figure 4. Definition of Step Size

LINEARITY ERROR (integral linearity). A measure of how straight

a device's transfer function is, it indicates the worst-case deviation of

linearity of the actual transfer function from the best-fit straight line. It

is normally specified in parts of an LSB.

PROGRAM STEP

0

25

75

100

50

0

153147

63

$00

$0F

$1F

$2F

$3F

IDEAL

IDEAL

ACTUAL

STEP

SIZE

DIGITAL NUMBER

Step Size

V

DD

64

------------0.75

V

DD

64

------------

±

=

(For any adjacent pair of digital numbers)