AC CHARACTERISTICS

ADS5270

SBAS293F – JANUARY 2004 – REVISED JANUARY 2009............................................................................................................................................... www.ti.com

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

cycle, AVDD = 3.3V, LVDD = 3.3V, –1dBFS, ISET = 56.2kΩ, internal voltage reference, and LVDS buffer current at 3.5mA per

channel, unless otherwise noted.

ADS5270

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DYNAMIC CHARACTERISTICS

fIN = 1MHz

89

dBc

fIN = 5MHz

78

87

dBc

SFDR Spurious-Free Dynamic Range

fIN = 10MHz

85

dBc

fIN = 20MHz

83

dBc

fIN = 1MHz

95

dBc

fIN = 5MHz

85

95

dBc

HD2 2nd-Order Harmonic Distortion

fIN = 10MHz

90

dBc

fIN = 20MHz

87

dBc

fIN = 1MHz

89

dBc

fIN = 5MHz

78

87

dBc

HD3 3rd-Order Harmonic Distortion

fIN = 10MHz

85

dBc

fIN = 20MHz

83

dBc

fIN = 1MHz

70.5

dBFS

fIN = 5MHz

68

70.5

dBFS

SNR Signal-to-Noise Ratio

fIN = 10MHz

70.5

dBFS

fIN = 20MHz

70.5

dBFS

fIN = 1MHz

70

dBFS

fIN = 5MHz

67.5

70

dBFS

SINAD Signal-to-Noise and Distortion

fIN = 10MHz

70

dBFS

fIN = 20MHz

70

dBFS

ENOB Effective Number of Bits

fIN = 5MHz

11.3

Bits

5MHz Full-Scale Signal Applied to 7 Channels; Measurement

–90

dBc

Crosstalk

Taken on the Channel with No Input Signal

f1 = 9.5MHz at –7dBFS

–85

dBFS

Two-Tone, Third-Order

IMD3

Intermodulation Distortion

f2 = 10.2MHz at –7dBFS

6

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