AD7451 datasheet(2/15 Pages) AD

2 / 15 page

REV. PrC

PRELIMINARY TECHNICAL DATA

–2–

Parameter

Test Conditions/Comments

B Version

Unit

DYNAMIC PERFORMANCE

Signal to (Noise + Distortion)

(SINAD)

dB min

Total Harmonic Distortion (THD)

-80dB typ

-75

dB max

Peak Harmonic or Spurious Noise

-82dB typ

-75

dB max

Intermodulation Distortion (IMD)

Second Order Terms

-85

dB typ

Third Order Terms

-85

dB typ

Aperture Delay

ns typ

Aperture Jitter

ps typ

Full Power Bandwidth

@ -3 dB

MHz typ

@ -0.1 dB

2.5

MHz typ

DC ACCURACY

Resolution

Bits

Integral Nonlinearity (INL)2

± 1

LSB max

Differential Nonlinearity (DNL)

Guaranteed No Missed Codes

to 12 Bits.

± 1

LSB max

Offset Error2

± 3

LSB max

Gain Error

± 3

LSB max

ANALOG INPUT

Full Scale Input Span

VIN+ - VIN-

VREF

Absolute Input Voltage

VIN+

VREF

VIN-

0.1 to 1

DC Leakage Current

± 1

µA max

Input Capacitance

When in Track

pF typ

When in Hold

pF typ

REFERENCE INPUT

VREF Input Voltage

±1% tolerance for

specified performance

2.5

DC Leakage Current

± 1

µA max

VREF Input Capacitance

pF typ

LOGIC INPUTS

Input High Voltage, VINH

2.4

V min

Input Low Voltage, VINL

0.8

V max

Input Current, IIN

Typically 10nA, VIN = 0VorVDD

± 1

µA max

Input Capacitance, CIN

pF max

LOGIC OUTPUTS

Output High Voltage, VOH

VDD = 5V; ISOURCE = 200µA

2.8

V min

VDD = 3V; ISOURCE = 200µA

2.4

V min

Output Low Voltage, VOL

ISINK =200µA

0.4

V max

Floating-State Leakage Current

± 1

µA max

Floating-State Output Capacitance4

pF max

Output Coding

Straight

(Natural)

Binary

AD7451 - SPECIFICATIONS1

( VDD = 2.7V to 5.25V, fSCLK = 18MHz, fS = 1MHz, VREF = 2.5 V; FIN = 300kHz;

TA = TMIN to TMAX, unless otherwise noted.)

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