XC888LM datasheet(124/144 Pages) INFINEON

124 / 144 page

XC886/888CLM

Electrical Parameters

Data Sheet

117

V0.9, 2006-12

Switched

capacitance at the

analog voltage

inputs

AINSW

CC –

2)4)

Input resistance of

the reference input

AREF

CC –

Ω

Input resistance of

the selected analog

channel

AIN

CC –

1.5

Ω

1) TUE is tested at

AREF =5.0 V, VAGND =0V, VDDP =5.0 V.

2) Not subject to production test, verified by design/characterization

3) This represents an equivalent switched capacitance. This capacitance is not switched to the reference voltage

at once. Instead of this, smaller capacitances are successively switched to the reference voltage.

4) The sampling capacity of the conversion C-Network is pre-charged to

AREF/2 before connecting the input to

the C-Network. Because of the parasitic elements, the voltage measured at ANx is lower than

AREF/2.

Table 41

ADC Characteristics (Operating Conditions apply;

DDP = 5V Range)

Parameter

Symbol

Limit Values

Unit Test Conditions/

Remarks

min.

typ .

max.

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