XC888LM datasheet(123/144 Pages) INFINEON

123 / 144 page

XC886/888CLM

Electrical Parameters

Data Sheet

116

V0.9, 2006-12

4.2.3

ADC Characteristics

The values in the table below are given for an analog power supply between 4.5 V to

5.5 V. The ADC can be used with an analog power supply down to 3 V. But in this case,

the analog parameters may show a reduced performance. All ground pins (

SS) must be

externally connected to one single star point in the system. The voltage difference

between the ground pins must not exceed 200mV.

Table 41

ADC Characteristics (Operating Conditions apply;

DDP = 5V Range)

Parameter

Symbol

Limit Values

Unit Test Conditions/

Remarks

min.

typ .

max.

Analog reference

voltage

AREF

AGND

+ 1

DDP

+ 0.05

Analog reference

ground

AGND

SS -

0.05

AREF

- 1

Analog input

voltage range

AIN

AGND

–

AREF

ADC clocks

ADC

–

25.8

MHz module clock

ADCI

–

MHz internal analog clock

See Figure 35

Sample time

CC (2 + INPCR0.STC)

ADCI

µs

Conversion time

CC See Section 4.2.3.1

µs

Total unadjusted

error

TUE

CC –

–

±1

LSB 8-bit conversion

––

±2

LSB 10-bit conversion

Differential

Nonlinearity

DNL

CC –

–

LSB 10-bit conversion

Integral

Nonlinearity

INL

CC –

–

LSB 10-bit conversion

Offset

OFF

CC –

–

LSB 10-bit conversion

Gain

GAIN

CC –

–

LSB 10-bit conversion

Switched

capacitance at the

reference voltage

input

AREFSW

CC –

2)3)

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