MPC5673K datasheet(85/140 Pages) FREESCALE

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Electrical characteristics

MPC5675K Microcontroller Data Sheet, Rev. 4

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

From this formula, in the worst case (when VA is maximum, that is for instance 5 V), assuming to accept

a maximum error of half a count, a constraint is evident on CF value:

Eqn. 20

Table 24. ADC conversion characteristics

No.

Symbol

Parameter

Conditions1

NOTES:

1 V

DD = 3.3 V, TJ = –40 to +150 °C, unless otherwise specified and analog input voltage from VAGND to VAREF.

Min Typ Max Unit

1fCK

SR ADC clock frequency (depends on ADC

configuration)

(The duty cycle depends on AD_CK2 frequency)

2 AD_CK clock is always half of the ADC module input clock defined via the auxiliary clock divider for the ADC.

—3

—

MHz

2fs

SR Sampling frequency

—

959 kHz

3tADC_S D Sample time

60 MHz

383

—

4tADC_E P Evaluation time

TBD

600

—

5CS

D ADC input sampling capacitance

—

— 7.32

6CP1

D ADC input pin capacitance 1

——

—

2.5

7CP2

D ADC input pin capacitance 2

——

— TBD

8RSW1

D Channel selection switch resistance

VREF range=4.5to5.5 V

—

1.0



9VREF range=3.0to3.6 V

—

1.2



RAD

D Sample switching resistance

—

825



IINJ

T Current injection

Current injection on one ADC

input channel, different from

the converted one. Other

parameters stay within

specified limits as long as the

ADC supply stays within its

specified limits due to the

current injection.

–3

—

INL

P Integral non linearity

—–3

—

LSB

DNL

P Differential non linearity6

—–1.0

—

1.0 LSB

OFS

T Offset error

—–4

—

LSB

GNE

T Gain error

—–4

—

LSB

TUE

P Total unadjusted error

—–6

—

LSB

TUE

T Total unadjusted error with current injection

—

TBD

— TBD LSB

SNR

T Signal-to-noise ratio

—69

—

THD

T Total harmonic distortion

—TBD

—

20 SINAD T Signal-to-noise and distortion

—65

—

21 ENOB

T Effective number of bits

—10.5

—

bits

8192





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