Rainbow-electronics MAX1208 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX1208

12-Bit, 80Msps, 3.3V ADC

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ELECTRICAL CHARACTERISTICS (continued)

= 3.3V, OV

= 2.0V, GND = 0, REFIN = REFOUT (internal reference), V

= -0.5dBFS, CLKTYP = high, DCE = high, PD = low,

G/T = low, f

CLK

= 80MHz (50% duty cycle), T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

fIN = 3MHz at -0.5dBFS 89.3

fIN = 32.5MHz at -0.5dBFS

78.7

88.2

Spurious-Free Dynamic Range SFDR

fIN = 70MHz at -0.5dBFS 85.1

dBc

fIN = 3MHz at -0.5dBFS

-87.1

fIN = 32.5MHz at -0.5dBFS

-85.0 -77.2

Total Harmonic Distortion THD

fIN = 70MHz at -0.5dBFS

-81.2

dBc

fIN = 3MHz at -0.5dBFS -93

fIN = 32.5MHz at -0.5dBFS -89Second Harmonic HD2

fIN = 70MHz at -0.5dBFS

-86.5

dBc

fIN = 3MHz at -0.5dBFS

-96.8

fIN = 32.5MHz at -0.5dBFS

-95.1

Third Harmonic HD3

fIN = 70MHz at -0.5dBFS

-85.1

dBc

Intermodulation Distortion IMD

fIN1 = 68.5MHz at -7dBFS

fIN2 = 71.5MHz at -7dBFS

-81.1

dBc

Third-Order Intermodulation IM3

fIN1 = 68.5MHz at -7dBFS

fIN2 = 71.5MHz at -7dBFS

-84.4

dBc

Two-Tone Spurious-Free

Dynamic Range

SFDRTT

fIN1 = 68.5MHz at -7dBFS

fIN2 = 71.5MHz at -7dBFS

85.4 dBc

Aperture Delay tAD Figure 4 0.9 ns

Aperture Jitter tAJ Figure 4 <0.2

psRMS

Output Noise nOUT INP = INN = COM 0.52

LSBRM

Overdrive Recovery Time ±10% beyond full scale 1

Clock

cycles

INTERNAL REFERENCE (REFIN = REFOUT; VREFP, VREFN, and VCOM are generated internally)

REFOUT Output Voltage

VREFOUT 1.978 2.048 2.079

COM Output Voltage VCOM VDD / 2 1.65 V

Differential Reference Output

VREF VREF = VREFP - VREFN

1.024

REFOUT Load Regulation 35

mV/mA

REFOUT Temperature Coefficient

TCREF +50

ppm/°C

Short to VDD—sinking 0.24

REFOUT Short-Circuit Current

Short to GND—sourcing 2.1

BUFFERED EXTERNAL REFERENCE (REFIN driven externally; VREFIN = 2.048V, VREFP, VREFN, and VCOM are generated

internally)

REFIN Input Voltage

VREFIN 2.048

REFP Output Voltage VREFP (VDD/2) + (VREFIN / 4)

2.162

1 2 3 4 5 6 7 8 ... 26 27

12-Bit, 80Msps, 3.3V ADC 1

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