MFC2000 datasheet(208/426 Pages) ETC

tên linh kiện	MFC2000

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

8-4

Conexant

100723A

8.1.4

Pipelined Analog-to-Digital Converter (PADC)

Table 8-5. Pipelined ADC (PADC)

Parameter

Min

Typ

Max

Units

RESOLUTION

Bits

SPEED

5MSPS

ACCURACY

Differential Nonlinearity (DNL)

-1

±0.5

LSB

Integral Nonlinearity (INL)

-2

±1

LSB

POWER SUPPLY REJECTION

±1

mV/V

OUTPUT FORMAT

Binary unsigned

LATENCY

ADCLK

8.1.5

Timing Diagram

SCIN

(scanner output)

sample

adclk

adcout[11:0]

a pixel period

programmable sample position

within pixel period

(min width = 50 ns)

latency

guarantees to be low while

sample is high

Table 8-6. PADC Timing Diagram

8.1.6

ADCVREFP, ADCVREFN, and ADCVC

The ADCVREFP and ADCVREFN voltages provide positive and negative references for ADCs while VC is used

as common mode voltage in the design of ADC and PGA. These voltages are decoupled with external capacitors

(0.1

µF) to reduce thermal noise and also to provide high frequency ac current for sampling.

8.1.7

TADCREF

Parameter

Min

Typ

Max

Units

TADCREF

2.370

2.390

2.410

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