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AC CHARACTERISTICS

Analog

Input

CLK

DATA[D11:D0]

DV

OE

DATA

D11:D0

t

OE

t

OE

t

DV

t

1

t

2

t

C

t

A

N + 1

N + 2

N + 4

N + 3

N

ADS5231

SBAS295A – JULY 2004 – REVISED JANUARY 2007

T

MIN = –40°C and TMAX = +85°C. Typical values are at TA = +25°C, clock frequency = maximum specified, 50% clock duty

cycle, AVDD = 3.3V, VDRV = 3.3V, –1dBFS, I

SET = 56.2kΩ, and internal voltage reference, unless otherwise noted.

ADS5231

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DYNAMIC CHARACTERISTICS

fIN = 5MHz

75

86

dBc

SFDR Spurious-Free Dynamic Range

fIN = 32.5MHz

85

dBc

fIN = 70MHz

83

dBc

fIN = 5MHz

82

92

dBc

HD2 2nd-Order Harmonic Distortion

fIN = 32.5MHz

87

dBc

fIN = 70MHz

85

dBc

fIN = 5MHz

75

86

dBc

HD3 3rd-Order Harmonic Distortion

fIN = 32.5MHz

85

dBc

fIN = 70MHz

83

dBc

fIN = 5MHz

68

70.7

dBFS

SNR Signal-to-Noise Ratio

fIN = 32.5MHz

69.5

dBFS

fIN = 70MHz

67.5

dBFS

fIN = 5MHz

67.5

70.3

dBFS

SINAD Signal-to-Noise and Distortion

fIN = 32.5MHz

69

dBFS

fIN = 70MHz

67

dBFS

5MHz Full-Scale Signal Applied to 1 Channel;

Crosstalk

–85

dBc

Measurement Taken on the Channel with No Input Signal

f1 = 4MHz at –7dBFS

Two-Tone, Third-Order

IMD3

90.9

dBFS

Intermodulation Distortion

f2 = 5MHz at –7dBFS

TIMING DIAGRAM

6

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