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AD7484

3 MSPS, 14-Bit SAR ADC

Analog Devices 

AD7484

SPECIFICATIONS

AVDD/DVDD = 5 V ± 5%, AGND = DGND = 0 V, VREF = external, fSAMPLE = 3 MSPS; all specifications TMIN to TMAX and valid for VDRIVE = 2.7 V

to 5.25 V, unless otherwise noted. Operating temperature range is −40°C to +85°C.

Table 1.

Parameter

Min

DYNAMIC PERFORMANCE1, 2

Signal-to-Noise + Distortion (SINAD)3 76.5

Total Harmonic Distortion (THD)3

Peak Harmonic or Spurious Noise

(SFDR)3

Intermodulation Distortion (IMD)3

Second Order Terms

Third Order Terms

Aperture Delay

Full Power Bandwidth

DC ACCURACY

Resolution

Integral Nonlinearity3

Differential Nonlinearity3

Offset Error3

Gain Error3

ANALOG INPUT

Input Voltage

DC Leakage Current

Input Capacitance4

REFERENCE INPUT/OUTPUT

Input Voltage, VREFIN

Input DC Leakage Current, VREFIN

Input Capacitance, VREFIN4

Input Current, VREFIN

Output Voltage, VREFOUT

Error @ 25°C, VREFOUT

Error TMIN to TMAX, VREFOUT

Output Impedance, VREFOUT

14

−200

Typ

Max

Unit

dB

78

dB

79

dB

77

dB

−90

dB

−95

dB

−92

dB

−90

dB

−96

dB

−94

dB

10

ns

40

MHz

3.5

MHz

Bits

±0.5

±1

LSB

±0.3

±0.75 LSB

±6

LSB

0.036 %FSR

±6

LSB

0.036 %FSR

mV

+2.7

V

±1

µA

±2

µA

35

pF

+2.5

V

±1

µA

25

pF

220

µA

+2.5

V

±50

mV

±100 mV

1

Ω

Test Conditions/Comments

fIN = 1 MHz

fIN = 1 MHz

fIN = 1 MHz, extended input

fIN = 1 MHz, internal reference

Internal reference

fIN1 = 95.053 kHz, fIN2 = 105.329 kHz

@ 3 dB

@ 0.1 dB

Guaranteed no missed codes to 14 bits

VIN from 0 V to 2.7 V

VIN = −200 mV

± 1% for specified performance

External reference

Rev. C | Page 3 of 20

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