AD9281 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD9281

Dual Channel 8-Bit Resolution CMOS ADC

Analog Devices 

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

DC ACCURACY

Differential Nonlinearity

Integral Nonlinearity

Differential Nonlinearity (SE)1

Integral Nonlinearity (SE)1

Zero-Scale Error, Offset Error

Full-Scale Error, Gain Error

Gain Match

Offset Match

FS

DNL

INL

DNL

INL

EZS

EFS

28

± 0.1

± 0.25

± 0.2 ± 1.0

±0.3 ±1.5

± 1 ± 3.2

± 1.2 ± 5.4

± 0.2

± 1.2

MHz (32 MHz at +25°C)

LSB

LSB

LSB

LSB

% FS

% FS

LSB

LSB

REFT = 1.0 V, REFB = 0.0 V

REFT = 1.0 V, REFB = 0.0 V

ANALOG INPUT

Input Voltage Range

Input Capacitance

Aperture Delay

Aperture Uncertainty (Jitter)

Aperture Delay Match

Input Bandwidth (–3 dB)

Small Signal (–20 dB)

Full Power (0 dB)

AIN

–0.5 AVDD/2

CIN

2

tAP

4

tAJ

2

2

BW

240

245

V

pF

ns

ps

ps

MHz

MHz

INTERNAL REFERENCE

Output Voltage (1 V Mode)

Output Voltage Tolerance (1 V Mode)

Output Voltage (2 V Mode)

Output Voltage Tolerance (2 V Mode)

Load Regulation (1 V Mode)

Load Regulation (2 V Mode)

VREF

VREF

VREF

1

± 10

2

± 15

± 10 ± 35

± 15

V

REFSENSE = VREF

mV

V

REFSENSE = GND

mV

mV 1 mA Load Current

mV 1 mA Load Current

POWER SUPPLY

Operating Voltage

Supply Current

Power Consumption

Power-Down

Power Supply Rejection

DYNAMIC PERFORMANCE2

Signal-to-Noise and Distortion

f = 3.58 MHz

f = 14 MHz

Signal-to-Noise

f = 3.58 MHz

f = 14 MHz

Total Harmonic Distortion

f = 3.58 MHz

f = 14 MHz

Spurious Free Dynamic Range

f = 3.58 MHz

f = 14 MHz

Two-Tone Intermodulation Distortion3

Differential Phase

Differential Gain

Crosstalk Rejection

AVDD

DVDD

IAVDD

IDVDD

PD

PSR

SINAD

SNR

THD

SFDR

IMD

DP

DG

2.7 3

5.5

2.7 3

5.5

75

0.1

225 260

16

0.15 0.75

46.4 49.1

48

47.8 49.2

48.5

–67.5 –49.5

–60

49.6 65

56

–58

0.2

0.08

–62

V

V

mA

mA

mW

mW

% FS

STBY = AVDD, Clock Low

dB

dB

dB

dB

dB

dB

dB

dB

dB

Degree

%

dB

f = 44.9 MHz and 45.52 MHz

NTSC 40 IRE Mod Ramp

FS = 14.3 MHz

–2–

REV. E

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