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95

75

65

55

45

25

InputAmplitude(dBFS)

-

60

0

-

30

-

40

-

50

-

20

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

85

-

10

35

94

84

79

74

69

ClockAmplitude(V

Differential)

PP

0.6

2.3

1.6

1.1

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

89

2.1

94

84

79

74

69

ExternalReferenceDifferentialVoltage,REF

REF (V)

-

T

B

1.6

2.4

1.9

1.8

1.7

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

89

2.0

2.3

2.2

2.1

Externalreferencecommon-modevoltage

maintainedat1.5V.

94

84

79

74

69

AnalogInputCommon-ModeVoltage(V)

1.30

1.70

1.40

1.35

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

89

1.45

1.65

1.60

1.55

1.50

94

84

79

74

69

ExternalReferenceCommon-ModeVoltage,(REF +REF )/2(V)

T

B

1.35

1.65

1.50

1.45

1.40

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

89

1.55

1.60

Externalreferencedifferentialvoltagemaintainedat2V.

94

84

79

74

69

VoltageonV

(V)

CM

1.35

1.65

1.50

1.45

1.40

SNR(dBFS)

SFDR(dBc)

f =65MHz

f

=10MHz

S

IN

89

1.55

1.60

ADS5281

ADS5282

SBAS397E – DECEMBER 2006 – REVISED JANUARY 2008

TYPICAL CHARACTERISTICS (continued)

clock duty cycle, input frequency = 10MHz, –1dBFS differential analog input, 0dB digital gain setting, 1.5V analog input

current setting = 3.5mA, unless otherwise noted.

DYNAMIC PERFORMANCE vs INPUT AMPLITUDE

DYNAMIC PERFORMANCE vs CLOCK AMPLITUDE

Figure 16.

Figure 17.

DYNAMIC PERFORMANCE vs ANALOG INPUT

DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE

COMMON-MODE VOLTAGE

DIFFERENTIAL VOLTAGE

Figure 18.

Figure 19.

DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE

DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE

COMMON-MODE VOLTAGE

Figure 20.

Figure 21.

Copyright © 2006–2008, Texas Instruments Incorporated

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