AD9866BCPRL datasheet(13/48 Pages) AD

13 / 48 page

AD9866

Rev. A | Page 13 of 48

Rx PATH TYPICAL PERFORMANCE CHARACTERISTICS

AVDD = CLKVDD = DVDD = DRVDD = 3.3 V, fOSCIN = fADC = 80 MSPS, low-pass filter’s f−3 dB = 30 MHz, AIN = −1 dBFS,

RIN = 50 Ω, half- or full-duplex interface, default power bias settings.

FREQUENCY (MHz)

20304

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

FUND = –1dBFS

SINAD = 62.4dBFS

ENOB = 10.1BITS

SNR = 63.4dBFS

THD = –69.3dBFS

SFDR = –70.5dBc (THIRD HARMONIC)

RBW = 19.53kHz

Figure 9. Spectral Plot with 4k FFT of Input Sinusoid

with RxPGA = 0 dB and PIN = 9 dBm

FREQUENCY (MHz)

20304

–30

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

RBW = 19.53kHz

Figure 10. Spectral Plot with 4K FFT of 111-Carrier DMT Signal

with PAR = 11 dB, PIN = −33.7 dBm, LPF's f−3 dB = 32 MHz and RxPGA = 36 dB

INPUT AMPLITUDE (dBFS)

(0dBFS = 2V p-p)

–21

–18

–15

–12

–9

–6

–3

–50

–92

–86

–80

–74

–68

–62

–56

SINAD @ 3.14V

SINAD @ 3.3V

SINAD @ 3.46V

THD @ 3.14V

THD @ 3.3V

THD @ 3.46V

Figure 11. SINAD and THD vs. Input Amplitude and Supply

(fIN = 8 MHz, LPF f−3 dB = 26 MHz; RxPGA = 0 dB)

RxPGA GAIN (dB)

–6

10.5

10.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

5MHz

10MHz

15MHz

20MHz

30MHz

Figure 12. SINAD/ENOB vs. RxPGA Gain and Frequency

RxPGA GAIN (dB)

–6

–55

–60

–65

–70

–75

–80

–85

5MHz

10MHz

15MHz

20MHz

30MHz

Figure 13. THD vs. RxPGA Gain and Frequency

RxPGA GAIN (dB)

–6

–40

–80

–75

–70

–65

–60

–55

–50

–45

SINAD @ +25

°C

SINAD @ +85

°C

SINAD @ –40

°C

THD @ +25

°C

THD @ +85

°C

THD @ –40

°C

Figure 14. SINAD/THD Performance vs. RxPGA Gain and Temperature

( fIN = 10 MHz)

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