AD6645SLASHPCB datasheet(12/20 Pages) AD

12 / 20 page

REV. 0

AD6645

–12–

FREQUENCY – MHz

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

510

152025303540

ENCODE = 80.0MSPS

AIN = 30.5MHz @ –29.5 dBFS

NO DITHER

TPC 19. 1 M FFT without Dither

ANALOG INPUT LEVEL

100

110

dBFS

ENCODE = 80.0MSPS

AIN = 30.5MHz

NO DITHER

SFDR = 90 dB

REFERENCE LINE

TPC 20. SFDR without Dither

FREQUENCY – MHz

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

ENCODE = 76.8MSPS

AIN = 69.1MHz @

–1dBFS

SNR = 73.5dB

SFDR = 89.0dBc

TPC 21. Single Tone 69.1 MHz: Encode = 76.8 MSPS

FREQUENCY – MHz

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

ENCODE = 80.0MSPS

AIN = 30.5MHz @ –29.5dBFS

WITH DITHER @ –19.2 dBm

TPC 22. 1 M FFT with Dither

ANALOG INPUT LEVEL

–90

100

110

–80

–70

–60

–50

–40

–30

–20

–10

dBFS

ENCODE = 80.0MSPS

AIN = 30.5MHz

WITH DITHER @ –19.2 dBm

SFDR = 90 dB

REFERENCE LINE

SFDR = 100 dB

REFERENCE LINE

TPC 23. SFDR with Dither

FREQUENCY – MHz

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

ENCODE = 76.8MSPS

AIN = WCDMA @ 69.1MHz

TPC 24. WCDMA Tone 69.1 MHz: Encode = 76.8 MSPS

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