Rainbow-electronics MAX1421 Instrukcja Użytkownika Pobierz pdf (Strona 6)

MAX1421

12-Bit, 40Msps, +3.3V, Low-Power ADC

with Internal Reference

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

AVDD

= V

DVDD

= +3.3V, AGND = DGND = 0, V

= ±1.024V, differential input voltage, f

CLK

= 40MHz (50% duty cycle), digital output

load C

= 10pF, T

= T

MIN

to T

MAX,

unless otherwise noted. Typical values are at T

= +25°C.)

-120

-80

-100

-40

-60

-20

024 101214166 8 18 20

TWO-TONE IMD, 8192-POINT RECORD,

DIFFERENTIAL INPUT

MAX1421 toc04

ANALOG INPUT FREQUENCY (MHz)

AMPLITUDE (dB)

IN1

= 11.5104229MHz

IN2

= 13.5126603MHz

TWO-TONE ENVELOPE:

-0.49dB FS

IN1

= A

IN2

= -6.5dB FS

IMD2

IMD3

IN1

IN2

110100

SIGNAL-TO-NOISE PLUS DISTORTION

vs. ANALOG INPUT FREQUENCY

MAX1421 toc08

ANALOG INPUT FREQUENCY (MHz)

SINAD (dB)

-60 -40 -30-50 -20 -10 0

SPURIOUS-FREE DYNAMIC RANGE

vs. INPUT POWER (f

= 15MHz)

MAX1421 toc09

INPUT POWER (dB FS)

SFDR (dBc)

-80

-70

-50

-60

-40

-30

-60 -40-50 -30 -20 -10 0

TOTAL HARMONIC DISTORTION

vs. INPUT POWER (f

= 15MHz)

MAX1421 toc11

INPUT POWER (dB FS)

THD (dBc)

-20

-60 -40-50 -30 -20 -10 0

SIGNAL-TO-NOISE PLUS DISTORTION

vs. INPUT POWER (f

= 15MHz)

MAX1421 toc12

INPUT POWER (dB FS)

SINAD (dB)

-50

-80

110100

TOTAL HARMONIC DISTORTION vs.

ANALOG INPUT FREQUENCY

-74

MAX1421 toc07

ANALOG INPUT FREQUENCY (MHz)

THD (dBc)

-68

-62

-56

-60 -40-50 -30 -20 -10 0

SIGNAL-TO-NOISE RATIO

vs. INPUT POWER (f

= 15MHZ)

MAX1421 toc10

INPUT POWER (dB FS)

SNR (dB)

1 10 100

SPURIOUS-FREE DYNAMIC RANGE vs.

ANALOG INPUT FREQUENCY

MAX1421 toc05

ANALOG INPUT FREQUENCY (MHz)

SFDR (dBc)

1 10 100

SIGNAL-TO-NOISE RATIO vs.

ANALOG INPUT FREQUENCY

MAX1421 toc06

ANALOG INPUT FREQUENCY (MHz)

SNR (dB)

1 2 3 4 5 6 7 8 9 10 11 ... 16 17

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