AD7008 CMOS DDS Modulator

AD7008–Typical Performance CharacteristicsREF 5.0 dBm10 dB/DIV RANGE 5.0 dBmOFFSET 4 640 000.0 Hz–54.8 dBCOMPV REFV REF6115Ω+5V5TO DACAD70084R SETSTART 0 HzRBW 3 kHzVBW 10 kHzSTOP 10 000 000.0 HzST 2.4 SECFigure 17. Equivalent Reference CircuitFigure 20. f CLK = 20 MHz, f OUT = 5.1 MHzREF 4.3 dBm10 dB/DIV RANGE 5.0 dBmOFFSET 3 330 000.0 Hz–63.6 dBREF 4.3 dBm10 dB/DIV RANGE 5.0 dBmOFFSET 6 320 000.0 Hz–61.3 dBSTART 0 HzRBW 3 kHzVBW 10 kHzSTOP 10 000 000.0 HzST 2.4 SECSTART 0 HzRBW 3 kHzVBW 10 kHzSTOP 10 000 000.0 HzST 2.4 SECFigure 18. f CLK = 20 MHz, f OUT = 1.1 MHzFigure 21. f CLK = 20 MHz, f OUT = 2.1 MHzREF 4.3 dBm10 dB/DIV RANGE 5.0 dBmOFFSET 4 500 000.0 Hz–61.1 dBREF 5.0 dBm10 dB/DIV RANGE 5.0 dBmOFFSET –490 000.0 Hz–63.4 dBSTART 0 HzRBW 3 kHzVBW 10 kHzSTOP 10 000 000.0 HzST 2.4 SECSTART 0 HzRBW 3 kHzVBW 10 kHzSTOP 10 000 000.0 HzST 2.4 SECFigure 19. f CLK = 20 MHz, f OUT = 3.1 MHzFigure 22. f CLK = 20 MHz, f OUT = 4.1 MHz–12–REV. B