Analog Devices AD9866 Instructions Manual page 13

Rx PATH TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = CLKVDD = DVDD = DRVDD = 3.3 V, f
RIN = 50 Ω, half- or full-duplex interface, default power bias settings.
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0 10
FREQUENCY (MHz)
Figure 9. Spectral Plot with 4k FFT of Input Sinusoid
with RxPGA = 0 dB and P
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0 10
FREQUENCY (MHz)
Figure 10. Spectral Plot with 4K FFT of 111-Carrier DMT Signal
with PAR = 11 dB, P = −33.7 dBm, LPF's f
IN
66
SINAD @ 3.14V
63
SINAD @ 3.3V
SINAD @ 3.46V
60
57
THD @ 3.14V
54
THD @ 3.3V
THD @ 3.46V
51
48
45
–21 –18 –15 –12
INPUT AMPLITUDE (dBFS)
(0dBFS = 2V p-p)
Figure 11. SINAD and THD vs. Input Amplitude and Supply
(f = 8 MHz, LPF f
IN −3 dB
= f
OSCIN
FUND = –1dBFS
SINAD = 62.4dBFS
ENOB = 10.1BITS
SNR = 63.4dBFS
THD = –69.3dBFS
SFDR = –70.5dBc (THIRD HARMONIC)
RBW = 19.53kHz
20 30 4
= 9 dBm
IN
RBW = 19.53kHz
20 30 4
= 32 MHz and RxPGA = 36 dB
−3 dB
–50
–56
–62
–68
–74
–80
–86
–92
–9 –6 –3 0
= 26 MHz; RxPGA = 0 dB)
= 80 MSPS, low-pass filter's f
ADC
65
62
59
56
53
50
47
44
41
0
–6
Figure 12. SINAD/ENOB vs. RxPGA Gain and Frequency
–55
–60
–65
–70
–75
–80
–85
0
–6
65
61
59
56
53
50
47
44
41
–6
Figure 14. SINAD/THD Performance vs. RxPGA Gain and Temperature
Rev. A | Page 13 of 48
= 30 MHz, AIN = −1 dBFS,
−3 dB
0 6 12 18 24 30
RxPGA GAIN (dB)
0 6 12 18 24 30
RxPGA GAIN (dB)
Figure 13. THD vs. RxPGA Gain and Frequency
THD @ +25°C
THD @ +85°C
THD @ –40°C
0 6 12 18 24 30
RxPGA GAIN (dB)
( f = 10 MHz)
IN
AD9866
10.5
5MHz
10.0
10MHz
15MHz
20MHz
9.5
30MHz
9.0
8.5
8.0
7.5
7.0
6.5
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5MHz
10MHz
15MHz
20MHz
30MHz
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–40
SINAD @ +25°C
SINAD @ +85°C
–45
SINAD @ –40°C
–50
–55
–60
–65
–70
–75
–80
36 42 48