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AD9865 View Datasheet(PDF) - Analog Devices

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AD9865 Datasheet PDF : 48 Pages
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AD9865
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.
10
FUND = –1dBFS
0
SINAD = 59.3dBFS
ENOB = 9.56 BITS
–10
SNR = 59.8dBFS
THD = –69.1dBFS
–20
SFDR = –70.3dBc (THIRD HARMONIC)
RBW = 19.53kHz
–30
–40
–50
–60
–70
–80
–90
–100
0
10
20
30
40
FREQUENCY (MHz)
Figure 9. Spectral Plot with 4k FFT of Input Sinusoid
with RxPGA = 0 dB and PIN = 9 dBm
62
10.0
5MHz
10MHz
59
15MHz 9.5
20MHz
30MHz
56
9.0
53
8.5
50
8.0
47
7.5
44
7.0
41
–6 0
6.5
6 12 18 24 30 36 42 48
RxPGA GAIN (dB)
Figure 12. SINAD/ENOB vs. RxPGA Gain and Frequency
–30
RBW = 19.53kHz
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10
20
30
40
FREQUENCY (MHz)
Figure 10. Spectral Plot with 4k FFT of 111-Carrier DMT Signal with
PAR = 11 dB, PIN = −33.7 dBm, LPF f−3 dB = 32 MHz, and RxPGA = 36 dB
–55
–60
–65
–70
–75
–80
–85
–6 0
5MHz
10MHz
15MHz
20MHz
30MHz
6 12 18 24 30 36 42 48
RxPGA GAIN (dB)
Figure 13. THD vs. RxPGA Gain and Frequency
66
–50
62
SINAD @ 3.14V
THD @ 3.14V
SINAD @ 3.3V
THD @ 3.3V
63
SINAD @ 3.46V
THD @ 3.46V
–56
59
–40
SINAD @ +25°C
SINAD @ +85°C
SINAD @ –40°C –45
60
–62
56
–50
THD @ +25°C
57
–68
53
THD @ +85°C
THD @ –40°C
–55
54
–74
50
–60
51
–80
47
–65
48
–86
44
–70
45
–21
–18
–15
–12
–9
–6
–3
INPUT AMPLITUDE (dBFS)
0dBFS = 2V p-p
–92
0
Figure 11. SINAD and THD vs. Input Amplitude and Supply
(fIN = 8 MHz, LPF f−3 dB = 26 MHz; RxPGA = 0 dB)
41
–6 0
–75
6 12 18 24 30 36 42 48
RxPGA GAIN (dB)
Figure 14. SINAD/THD Performance vs. RxPGA Gain and Temperature
( fIN = 10 MHz)
Rev. A | Page 13 of 48
 

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