AD7490BRUZ datasheet(3/28 Pages) AD

Nome de Peças	AD7490BRUZ

Descrição Electrónicos	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

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Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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Data Sheet

AD7490

Rev. D | Page 3 of 28

SPECIFICATIONS

VDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK1 = 20 MHz, TA = TMIN to TMAX, unless otherwise noted. Temperature range (B Version):

−40°C to +85°C.

Table 1.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

DYNAMIC PERFORMANCE

fIN = 50 kHz sine wave, fSCLK = 20 MHz

Signal-to-(Noise + Distortion) (SINAD)2

VDD = 5 V

69

70.5

dB

VDD = 3 V

68

69.5

dB

Signal-to-Noise Ratio (SNR)2

69.5

dB

Total Harmonic Distortion (THD)2

VDD = 5 V

−84

−74

dB

VDD = 3 V

−77

−71

dB

Peak Harmonic or Spurious Noise (SFDR)2

VDD = 5 V

−86

−75

dB

VDD = 3 V

−80

−73

dB

Intermodulation Distortion (IMD)2

fa = 40.1 kHz, fb = 41.5 kHz

Second-Order Terms

−85

dB

Third-Order Terms

−85

dB

Aperture Delay

10

ns

Aperture Jitter

50

ps

Channel-to-Channel Isolation2

fIN = 400 kHz

−82

dB

Full Power Bandwidth

3 dB

8.2

MHz

0.1 dB

1.6

MHz

DC ACCURACY2

Resolution

12

Bits

Integral Nonlinearity

±1

LSB

Differential Nonlinearity

Guaranteed no missed codes to 12 bits

−0.95/+1.5

LSB

0 V to REFIN Input Range

Straight binary output coding

Offset Error

±0.6

±8

LSB

Offset Error Match

±0.5

LSB

Gain Error

±2

LSB

Gain Error Match

±0.6

LSB

0 V to 2 × REFIN Input Range

−REFIN to +REFIN biased about REFIN

with twos complement output coding

offset

Positive Gain Error

±2

LSB

Positive Gain Error Match

±0.5

LSB

Zero Code Error

±0.6

±8

LSB

Zero Code Error Match

±0.5

LSB

Negative Gain Error

±1

LSB

Negative Gain Error Match

±0.5

LSB

ANALOG INPUT

Input Voltage Range

RANGE bit set to 1

0

REFIN

V

RANGE bit set to 0, VDD = 4.75 V to 5.25 V

for 0 V to 2 × REFIN

0

2 × REFIN

V

DC Leakage Current

±1

µA

Input Capacitance

20

pF

REFERENCE INPUT

REFIN Input Voltage

±1% specified performance

2.5

V

DC Leakage Current

±1

µA

REFIN Input Impedance

fSAMPLE = 1 MSPS

36

kΩ

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