ADS5500

SBAS303C − DECEMBER 2003 − REVISED MARCH 2004

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3

ELECTRICAL CHARACTERISTICS

Typ, min, and max values at TA = +25°C, full temperature range is TMIN = −40°C to tMAX = +85°C, sampling rate = 125MSPS, 50% clock duty

cycle, AVDD = DRVDD = 3.3V, DLL On, −1dBFS differential input, and 3VPP differential clock, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

14 Tested

Bits

Analog Inputs

Differential input range

2.3

VPP

Differential input impedance

See Figure 4

6.6

k

Ω

Differential input capacitance

See Figure 4

4

pF

Total analog input common-mode current

mA

Analog input bandwidth

Source impedance = 50

Ω

750

MHz

Conversion Characteristics

Maximum sample rate

see note (2)

125

MSPS

Data latency

See timing diagram, Figure 1

16.5

Clock Cycles

Internal Reference Voltages

Reference bottom voltage, VREFM

0.97

V

Reference top voltage, VREFP

2.11

V

Reference error

−4

±0.9

+4

%

Common-mode voltage output, VCM

1.55

± 0.05

V

Dynamic DC Characteristics and Accuracy

No missing codes

Tested

Differential linearity error, DNL

fIN = 10MHz

−0.9

±0.75

+1.1

LSB

Integral linearity error, INL

fIN = 10MHz

−5

±2.5

+5

LSB

Offset error

±1.5

mV

Offset temperature coefficient

0.0007

%/

°C

Gain error

±0.45

%FS

Gain temperature coefficient

0.01

∆%/°C

Dynamic AC Characteristics

fIN = 10MHz

Room temp

70.5

71.5

dBFS

fIN = 10MHz

Full temp range

69

71.5

dBFS

fIN = 30MHz

71.5

dBFS

fIN = 55MHz

71.5

dBFS

Signal-to-noise ratio, SNR

fIN = 70MHz

Room temp

70

71.2

dBFS

Signal-to-noise ratio, SNR

fIN = 70MHz

Full temp range

68.5

71

dBFS

fIN = 100MHz

70.5

dBFS

fIN = 150MHz

70.1

dBFS

fIN = 225MHz

69.1

dBFS

RMS Output noise

Input tied to common-mode

1.1

LSB

fIN = 10MHz

Room temp

82

84

dBc

fIN = 10MHz

Full temp range

78

84

dBc

fIN = 30MHz

84

dBc

fIN = 55MHz

79

dBc

Spurious-free dynamic range, SFDR

fIN = 70MHz

Room temp

80

83

dBc

Spurious-free dynamic range, SFDR

fIN = 70MHz

Full temp range

77

82

dBc

fIN = 100MHz

82

dBc

fIN = 150MHz

78

dBc

fIN = 225MHz

74

dBc

(1) 2mA per input.

(2) See Reccommended Operating Conditions on page 2.