DSP56F803 datasheet(48/57 Pages) FREESCALE

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Analog-to-Digital Converter (ADC) Characteristics

56F803 Technical Data, Rev. 16

Freescale Semiconductor

Figure 3-25 TXD Pulse Width

3.12 Analog-to-Digital Converter (ADC) Characteristics

Table 3-16 ADC Characteristics

Characteristic

Symbol

Min

Typ

Max

Unit

ADC input voltages

VADCIN

—

VREF

Resolution

RES

—

Bits

Integral Non-Linearity3

INL

—

+/- 2.5

+/- 4

LSB4

Differential Non-Linearity

DNL

—

+/- 0.9

+/- 1

LSB4

Monotonicity

GUARANTEED

ADC internal clock5

fADIC

0.5

—

MHz

Conversion range

RAD

VSSA

—VDDA

Power-up time

tADPU

—16

—

tAIC cycles

Conversion time

tADC

—6

—

tAIC cycles

Sample time

tADS

—1

—

tAIC cycles

Input capacitance

CADI

—5

—

pF6

Gain Error (transfer gain)5

EGAIN

0.95

1.00

1.10

—

Offset Voltage5

VOFFSET

-80

-15

+20

Total Harmonic Distortion5

THD

—

Signal-to-Noise plus Distortion5

SINAD

—

Effective Number of Bits5

ENOB

—

bit

Spurious Free Dynamic Range5

SFDR

—

Bandwidth

—

100

—

KHz

TXD

SCI receive

data pin

(Input)

TXDPW

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