AD9789BBCZ datasheet(7/76 Pages) AD

7 / 76 page

AD9789

Rev. A | Page 7 of 76

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

ADJACENT CHANNEL LEAKAGE RATIO (ACLR)

fDAC = 2293.76 MSPS measured in 6 MHz

channels

1-Channel QAM

fOUT = 200 MHz (Harmonics)

−76

dBc

fOUT = 200 MHz (Noise Floor)

−82

dBc

fOUT = 500 MHz (Harmonics)

−74.5

dBc

fOUT = 500 MHz (Noise Floor)

−78

dBc

fOUT = 800 MHz (Harmonics)

−69

dBc

fOUT = 800 MHz (Noise Floor)

−78

dBc

2-Channel QAM

fOUT = 200 MHz (Harmonics)

−77.5

dBc

fOUT = 200 MHz (Noise Floor)

−81

dBc

fOUT = 500 MHz (Harmonics)

−68

dBc

fOUT = 500 MHz (Noise Floor)

−76

dBc

fOUT = 800 MHz (Harmonics)

−66

dBc

fOUT = 800 MHz (Noise Floor)

−76

dBc

4-Channel QAM

fOUT = 200 MHz (Harmonics)

−75

dBc

fOUT = 200 MHz (Noise Floor)

−76

dBc

fOUT = 500 MHz (Harmonics)

−69

dBc

fOUT = 500 MHz (Noise Floor)

−72

dBc

fOUT = 800 MHz (Harmonics)

−67

dBc

fOUT = 800 MHz (Noise Floor)

−72

dBc

WCDMA ACLR

fDAC = 2304 MSPS, mix mode second

Nyquist zone

Single Carrier

fOUT = 1850 MHz

First Adjacent Channel

−70

dBc

Second Alternate Channel

−72.5

dBc

Third Alternate Channel

−74

dBc

Single Carrier

fOUT = 2100 MHz

First Adjacent Channel

−68

dBc

Second Alternate Channel

−70.4

dBc

Third Alternate Channel

−72.7

dBc

Four Carrier

fOUT = 2100 MHz

First Adjacent Channel

−63.5

dBc

Second Alternate Channel

−65.1

dBc

Third Alternate Channel

−66.9

dBc

1 Adjusted DAC update rate is calculated as fDAC divided by the minimum required interpolation factor. For the AD9789, the minimum interpolation factor is 16. Thus,

with fDAC = 2400 MSPS, FDACadj = 2400 MSPS/16 = 150 MSPS.

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