Philips Semiconductors

Product specification

80C552/83C552

Single-chip 8-bit microcontroller

1998 Aug 13

12

appropriate adjustment of gain and offset error. (See Figure 1.)

a straight line which fits the ideal transfer curve. (See Figure 1.)

and the straight line which fits the ideal transfer curve. Gain error is constant at every point on the transfer curve. (See Figure 1.)

ADC and the ideal transfer curve.

17. This should be considered when both analog and digital signals are simultaneously input to port 5.

Figure 1. ADC Conversion Characteristic

1

0

2

3

4

5

6

7

1018

1019

1020

1021

1022

1023

1

2

3

4

5

6

7

1018

1019

1020

1021

1022

1023

1024

Code

Out

(2)

(1)

(5)

(4)

(3)

1 LSB

(ideal)

Offset

error

OSe

Offset

error

OSe

Gain

error

Ge

AVIN (LSBideal)

1 LSB =

1024

(1) Example of an actual transfer curve.

(2) The ideal transfer curve.

(3) Differential non-linearity (DLe).

(4) Integral non-linearity (ILe).

(5) Center of a step of the actual transfer curve.