AD9267EBZ datasheet(5/25 Pages) AD

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AD9267

Rev. 0 | Page 4 of 24

AC SPECIFICATIONS

All power supplies set to 1.8 V, 640 MHz sample rate, 0.5 V internal reference, PLL disabled, AIN1 = −2.0 dBFS, unless otherwise noted.

Table 2.

Parameter2

Temp

Min

Typ

Max

Unit

SIGNAL-TO-NOISE RATIO (SNR)

fIN = 2.4 MHz

Full

fIN = 4.2 MHz

25°C

fIN = 8.4 MHz

25°C

SPURIOUS-FREE DYNAMIC RANGE (WORST SECOND OR THIRD HARMONIC)3

fIN = 2.4 MHz

Full

−88

−80

dBc

fIN = 4.2 MHz

25°C

−88

dBc

fIN = 8.4 MHz

25°C

<−120

dBc

NOISE SPECTRAL DENSITY

AIN = −2 dBFS

Full

−155

−153

dBFS/Hz

AIN = −40 dBFS

Full

−156

−155

dBFS/Hz

NOISE FIGURE2, 4

AIN = −2 dBFS

25°C

AIN = −40 dBFS

25°C

TWO-TONE SFDR

fIN1 = 1.8 MHz @ −8 dBFS, fIN2 = 2.1 MHz @ −8 dBFS

25°C

−89.5

dBc

fIN1 = 3.7 MHz @ −8 dBFS, fIN2 = 4.2 MHz @ −8 dBFS

25°C

−93

dBc

fIN1 = 7.2 MHz @ −8 dBFS, fIN2 = 8.4 MHz @ −8 dBFS

25°C

−87

dBc

ANALOG INPUT BANDWIDTH

25°C

MHz

1 Input power is referenced to full scale. Therefore, all measurements were taken with a 2 dB signal below full scale, unless otherwise noted.

2 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.

3 Spurious-free dynamic range excluding the second or third harmonic is limited by the FFT size, <−120 dBFS.

4 Noise figure with respect to 50 Ω. AD9267 internal impedance is 1000 Ω differential. See the AN-835 for a definition.

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