Rainbow-electronics MAX19505 Bedienungsanleitung PDF herunterladen (Seite 8)

175MHz TWO-TONE IMD PLOT

FREQUENCY (MHz)

MAX19505 toc06

0 5 10 15 25 3020

AMPLITUDE (dBFS)

-100

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN1

= 172.50202MHz

f

IN2

= 177.49286MHz

70MHz TWO-TONE FFT PLOT

FREQUENCY (MHz)

MAX19505 toc05

0 5 10 15 25 3020

AMPLITUDE (dBFS)

-100

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN1

= 71.496925MHz

f

IN2

= 68.504600MHz

175MHz INPUT FFT PLOT

FREQUENCY (MHz)

MAX19505 toc04

AMPLITUDE (dBFS)

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN

= 175.096626MHz

A

IN

= - 0.457dBFS

SNR = 48.939dB

SINAD = 48.936dB

THD = -80.024dBc

SFDR1 = 83.676dBc

SFDR2 = 69.175dBc

010515253020

70MHz INPUT FFT PLOT

FREQUENCY (MHz)

MAX19505 toc03

AMPLITUDE (dBFS)

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN

= 70.1014328MHz

A

IN

= -0.497dBFS

SNR = 49.243dB

SINAD = 49.241dB

THD = -83.453dBc

SFDR1 = 90.072dBc

SFDR2 = 68.395dBc

010515253020

3MHz SINGLE-ENDED INPUT FFT PLOT

FREQUENCY (MHz)

MAX19505 toc02

010515253020

AMPLITUDE (dBFS)

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN

= 3.05034637MHz

A

IN

= -0.517dBFS

SNR = 49.130dB

SINAD = 49.092dB

THD = -69.749dBc

SFDR1 = 72.278dBc

SFDR2 = 68.102dBc

MAX19505

Dual-Channel, 8-Bit, 65Msps ADC

8 _______________________________________________________________________________________

Typical Operating Characteristics

(V

AVDD

= V

OVDD

= 1.8V, internal reference, differential clock, V

CLK

= 1.5V

P-P

, f

CLK

= 65MHz, A

IN

= -0.5dBFS, data output termination

= 50Ω, T

A

= +25°C, unless otherwise noted.)

3MHz INPUT FFT PLOT

FREQUENCY (MHz)

AMPLITUDE (dBFS)

MAX19505 toc01

0 5 10 15 25 3020

-90

-80

-70

-60

-40

-50

-20

-30

-10

0

f

IN

= 2.99877166MHz

A

IN

= -0.493dBFS

SNR = 49.285dB

SINAD = 49.282dB

THD = -80.871dBc

SFDR1 = 87.801dBc

SFDR2 = 68.102dBc

INTEGRAL NONLINEARITY

vs. DIGITAL OUTPUT CODE

DIGITAL OUTPUT CODE

INL (LSB)

MAX19505 toc07

0 64 128 192 256

-0.10

-0.08

-0.06

-0.04

-0.02

0

0.02

0.04

0.06

0.08

0.10

DIFFERENTIAL NONLINEARITY

vs. DIGITAL OUTPUT CODE

MAX19505 toc08

DIGITAL OUTPUT CODE

DNL (LSB)

0 64 128 192 256

-0.10

-0.08

-0.06

-0.04

-0.02

0

0.02

0.04

0.06

0.08

0.10

PERFORMANCE vs. INPUT FREQUENCY

PERFORMANCE (dBFS)

MAX19505 toc09

50

55

60

65

70

75

80

85

45

INPUT FREQUENCY (MHz)

0 100 200 300 400

-THD

SINAD

SFDR1

SNR

SFDR2

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 33 34

MAX19505 1

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