AD7482AST Просмотр технического описания (PDF) - Analog Devices

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AD7482AST

3 MSPS, 12-Bit SAR ADC

Analog Devices 

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

DYNAMIC PERFORMANCE2, 3

Signal-to-Noise + Distortion (SINAD)4

Total Harmonic Distortion (THD)4

Peak Harmonic or Spurious Noise (SFDR)4

Intermodulation Distortion (IMD)4

Second Order Terms

Third Order Terms

Aperture Delay

Full-Power Bandwidth

DC ACCURACY

Resolution

Integral Nonlinearity4

Differential Nonlinearity4

Offset Error4

Gain Error4

ANALOG INPUT

Input Voltage

DC Leakage Current

Input Capacitance5

REFERENCE INPUT/OUTPUT

VREFIN Input Voltage

VREFIN Input DC Leakage Current

VREFIN Input Capacitance5

VREFIN Input Current

VREFOUT Output Voltage

VREFOUT Error @ 25°C

VREFOUT Error TMIN to TMAX

VREFOUT Output Impedance

LOGIC INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN5

LOGIC OUTPUTS

Output High Voltage, VOH

Output Low Voltage, VOL

Floating-State Leakage Current

Floating-State Output Capacitance5

Output Coding

CONVERSION RATE

Conversion Time

Track-and-Hold Acquisition Time(tACQ)

Throughput Rate

Specification

Unit

71

dB min

72

dB typ

71

dB typ

–86

dB max

–90

dB typ

–88

dB typ

–87

dB max

–96

dB typ

–94

dB typ

10

ns typ

40

MHz typ

3.5

MHz typ

12

± 0.5

±1

± 0.25

± 0.5

± 0.25

± 1.5

0.036

± 1.5

0.036

Bits

LSB max

LSB max

LSB typ

LSB max

LSB typ

LSB max

%FSR max

LSB max

%FSR max

–200

+2.7

±1

±2

35

mV min

V max

µA max

µA typ

pF typ

+2.5

±1

25

220

+2.5

± 50

± 100

1

V

µA max

pF typ

µA typ

V typ

mV typ

mV max

Ω typ

VDRIVE –1

0.4

±1

10

V min

V max

µA max

pF max

0.7 × VDRIVE

0.3 × VDRIVE

± 10

V min

V max

µA max

10

pF max

Straight (Natural) Binary

300

ns max

70

ns max

70

ns max

2.5

MSPS max

3

MSPS max

–2–

Test Conditions/Comments

FIN = 1 MHz

FIN = 1 MHz

FIN = 1 MHz, Internal Reference

Internal Reference

FIN1 = 95.053 kHz, FIN2 = 105.329 kHz

@ 3 dB

@ 0.1 dB

B Grade

A Grade

Guaranteed No Missed Codes to 12 Bits

VIN from 0 V to 2.7 V

VIN = –200 mV

± 1% for Specified Performance

External Reference

Sine Wave Input

Full-Scale Step Input

Parallel Mode 1

Parallel Mode 2

REV. 0

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