ADS5287

SBAS428D – JANUARY 2008 – REVISED JUNE 2012

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ELECTRICAL CHARACTERISTICS (continued)

Typical values at +25°C. Minimum and maximum values are measured across the specified temperature range of TMIN =

–40°C to TMAX = +85°C, AVDD = 3.3V, LVDD = 1.8V, clock frequency = 10MSPS to 65MSPS, 50% clock duty cycle, –1dBFS

differential analog input, internal reference mode, ISET resistor = 56.2kΩ, and LVDS buffer current setting = 3.5mA, unless

otherwise noted.Typical values at +25°C.

ADS5287

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IAVDD

Analog supply current

139

165

mA

ILVDD

Digital current

Zero input to all channels

87

97

mA

Total power

615

719.1

mW

Obtained on powering down one channel

Incremental power saving

61

mW

at a time

POWER SUPPLY—EXTERNAL REFERENCE MODE

IAVDD

Analog supply current

132

mA

ILVDD

Digital current

Zero input to all channels

87

mA

Total power

592

mW

Obtained on powering down one channel

Incremental power saving

59

mW

at a time

EXTERNAL REFERENCE LOADING

Current drawn by the eight ADCs from the

Switching current

external reference voltages; sourcing for

3.5

mA

REFT, sinking for REFB.

DYNAMIC CHARACTERISTICS

fIN = 5MHz, single-ended clock

72

85

dBc

SFDR

Spurious-free dynamic range

fIN = 30MHz, differential clock

80

dBc

fIN = 5MHz, single-ended clock

72

85

dBc

HD2

Magnitude of second harmonic

fIN = 30MHz, differential clock

82

dBc

fIN = 5MHz, single-ended clock

72

85

dBc

HD3

Magnitude of third harmonic

fIN = 30MHz, differential clock

80

dBc

fIN = 5MHz, single-ended clock

70

80

dBc

THD

Total harmonic distortion

fIN = 30MHz, differential clock

78

dBc

fIN = 5MHz, single-ended clock

60.5

61.7

dBc

SNR

Signal-to-noise ratio

fIN = 30MHz, differential clock

61.7

dBc

fIN = 5MHz, single-ended clock

60.4

61.6

dBc

SINAD

Signal-to-noise and distortion

fIN = 30MHz, differential clock

61.6

dBc

6

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