Maxim MAX5865 Manuel d'utilisateur télécharger pdf (Page 11)

MAX5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End

______________________________________________________________________________________ 11

ADC INTEGRAL NONLINEARITY

MAX5865 toc34

DIGITAL OUTPUT CODE

INL (LSB)

224192128 16064 9632

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

-0.5

0 256

ADC DIFFERENTIAL NONLINEARITY

MAX5865 toc35

DIGITAL OUTPUT CODE

DNL (LSB)

224192128 16064 9632

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

-0.5

0 256

DAC INTEGRAL NONLINEARITY

MAX5865 toc36

DIGITAL INPUT CODE

INL (LSB)

896768512 640256 384128

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

1.0

-1.0

0 1024

DAC DIFFERENTIAL NONLINEARITY

MAX5865 toc37

DIGITAL INPUT CODE

DNL (LSB)

896768512 640256 384128

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

-0.5

0 1024

REFERENCE OUTPUT VOLTAGE

vs. TEMPERATURE

MAX5865 toc38

TEMPERATURE (°C)

REFP

- V

REFN

(V)

603510-15

0.505

0.510

0.515

0.520

0.500

-40 85

REFP

- V

REFN

Typical Operating Characteristics (continued)

= DV

= 3V, OV

= 1.8V, internal reference (1.024V), C

≈ 10pF on all digital outputs, f

CLK

= 40MHz 50% duty cycle, ADC

input amplitude = -0.5dBFS, DAC output amplitude = 0dBFS, differential ADC input, differential DAC output, C

REFP

= C

REFN

COM

= 0.33µF, Xcvr mode, T

= +25°C, unless otherwise noted.)

DAC CHANNEL-QD TWO-TONE

SPECTRAL PLOT

MAX5865 toc31

FREQUENCY (MHz)

AMPLITUDE (dB)

18.014.511.07.54.0

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

0.5

= 4MHz, f

= 4.5MHz, -7dBFS

SUPPLY CURRENT

vs. SAMPLING RATE

MAX5865 toc33

SAMPLING RATE (MHz)

SUPPLY CURRENT (mA)

3836343230282624

22 40

OVDD

Xcvr MODE

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 25 26

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Maxim MAX5865 Manuel d'utilisateur Page 11

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