AD7482AST datasheet(2/16 Pages) AD

2 / 16 page

REV. 0

–2–

AD7482–SPECIFICATIONS1

(VDD = 5 V

± 5%, AGND = DGND = 0 V, VREF = External, fSAMPLE = 3 MSPS; all specifi-

cations TMIN to TMAX and valid for VDRIVE = 2.7 V to 5.25 V, unless otherwise noted.)

Parameter

Specification

Unit

Test Conditions/Comments

DYNAMIC PERFORMANCE

2, 3

Signal-to-Noise + Distortion (SINAD)

dB min

FIN = 1 MHz

dB typ

FIN = 1 MHz

dB typ

FIN = 1 MHz, Internal Reference

Total Harmonic Distortion (THD)

–86

dB max

–90

dB typ

–88

dB typ

Internal Reference

Peak Harmonic or Spurious Noise (SFDR)

–87

dB max

Intermodulation Distortion (IMD)

Second Order Terms

–96

dB typ

FIN1 = 95.053 kHz, FIN2 = 105.329 kHz

Third Order Terms

–94

dB typ

Aperture Delay

ns typ

Full-Power Bandwidth

MHz typ

@ 3 dB

3.5

MHz typ

@ 0.1 dB

DC ACCURACY

Resolution

Bits

Integral Nonlinearity

±0.5

LSB max

B Grade

±1

LSB max

A Grade

±0.25

LSB typ

Differential Nonlinearity

±0.5

LSB max

Guaranteed No Missed Codes to 12 Bits

±0.25

LSB typ

Offset Error

±1.5

LSB max

0.036

%FSR max

Gain Error

±1.5

LSB max

0.036

%FSR max

ANALOG INPUT

Input Voltage

–200

mV min

+2.7

V max

DC Leakage Current

±1

µA max

VIN from 0 V to 2.7 V

±2

µA typ

VIN = –200 mV

Input Capacitance

pF typ

REFERENCE INPUT/OUTPUT

VREFIN Input Voltage

+2.5

±1% for Specified Performance

VREFIN Input DC Leakage Current

±1

µA max

VREFIN Input Capacitance

pF typ

VREFIN Input Current

220

µA typ

External Reference

VREFOUT Output Voltage

+2.5

V typ

VREFOUT Error @ 25

°C

±50

mV typ

VREFOUT Error TMIN to TMAX

±100

mV max

VREFOUT Output Impedance

Ω typ

LOGIC INPUTS

Input High Voltage, VINH

VDRIVE –1V min

Input Low Voltage, VINL

0.4

V max

Input Current, IIN

±1

µA max

Input Capacitance, CIN

pF max

LOGIC OUTPUTS

Output High Voltage, VOH

0.7

× V

DRIVE

V min

Output Low Voltage, VOL

0.3

× VDRIVE

V max

Floating-State Leakage Current

±10

µA max

Floating-State Output Capacitance

pF max

Output Coding

Straight (Natural) Binary

CONVERSION RATE

Conversion Time

300

ns max

Track-and-Hold Acquisition Time(tACQ)70

ns max

Sine Wave Input

ns max

Full-Scale Step Input

Throughput Rate

2.5

MSPS max

Parallel Mode 1

3MSPS max

Parallel Mode 2

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