AD9281ARSZ datasheet(3/16 Pages) AD

No de pièce	AD9281ARSZ

Description	Resolution CMOS ADC

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AD9281–SPECIFICATIONS

(AVDD = +3 V, DVDD = +3 V, FSAMPLE = 28 MSPS, VREF = 2 V, INB = 0.5 V, TMIN to TMAX

unless otherwise noted)

Parameter

Symbol

Min

Typ

Max

Units

Condition

RESOLUTION

8

Bits

CONVERSION RATE

FS

28

MHz

(32 MHz at +25

°C)

DC ACCURACY

Differential Nonlinearity

DNL

±0.1

LSB

REFT = 1.0 V, REFB = 0.0 V

Integral Nonlinearity

INL

±0.25

LSB

Differential Nonlinearity (SE)

1

DNL

±0.2

±1.0

LSB

REFT = 1.0 V, REFB = 0.0 V

Integral Nonlinearity (SE)1

INL

±0.3

±1.5

LSB

Zero-Scale Error, Offset Error

EZS

±1

±3.2

% FS

Full-Scale Error, Gain Error

EFS

±1.2

±5.4

% FS

Gain Match

±0.2

LSB

Offset Match

±1.2

LSB

ANALOG INPUT

Input Voltage Range

AIN

–0.5

AVDD/2

V

Input Capacitance

CIN

2pF

Aperture Delay

tAP

4ns

Aperture Uncertainty (Jitter)

tAJ

2ps

Aperture Delay Match

2

ps

Input Bandwidth (–3 dB)

BW

Small Signal (–20 dB)

240

MHz

Full Power (0 dB)

245

MHz

INTERNAL REFERENCE

Output Voltage (1 V Mode)

VREF

1

V

REFSENSE = VREF

Output Voltage Tolerance (1 V Mode)

±10

mV

Output Voltage (2 V Mode)

VREF

2

V

REFSENSE = GND

Output Voltage Tolerance (2 V Mode)

±15

mV

Load Regulation (1 V Mode)

VREF

±10

±35

mV

1 mA Load Current

Load Regulation (2 V Mode)

±15

mV

1 mA Load Current

POWER SUPPLY

Operating Voltage

AVDD

2.7

3

5.5

V

DVDD

2.7

3

5.5

V

Supply Current

IAVDD

75

mA

IDVDD

0.1

mA

Power Consumption

PD

225

260

mW

Power-Down

16

mW

STBY = AVDD, Clock Low

Power Supply Rejection

PSR

0.15

0.75

% FS

DYNAMIC PERFORMANCE

2

Signal-to-Noise and Distortion

SINAD

f = 3.58 MHz

46.4

49.1

dB

f = 14 MHz

48

dB

Signal-to-Noise

SNR

f = 3.58 MHz

47.8

49.2

dB

f = 14 MHz

48.5

dB

Total Harmonic Distortion

THD

f = 3.58 MHz

–67.5

–49.5

dB

f = 14 MHz

–60

dB

Spurious Free Dynamic Range

SFDR

f = 3.58 MHz

49.6

65

dB

f = 14 MHz

56

dB

Two-Tone Intermodulation Distortion

3

IMD

–58

dB

f = 44.9 MHz and 45.52 MHz

Differential Phase

DP

0.2

Degree

NTSC 40 IRE Mod Ramp

Differential Gain

DG

0.08

%

FS = 14.3 MHz

Crosstalk Rejection

–62

dB

REV. F

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