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| 型號： | AD9865BCP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Broadband Modem Mixed-Signal Front End |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, QCC64 |
| 封裝： | MO-220-VMMD, LFCSP-64 |
| 文件頁數(shù)： | 13/48頁 |
| 文件大?。?/td> | 1672K |
| 代理商： | AD9865BCP |
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AD9865
Rx PATH TYPICAL PERFORMANCE CHARACTERISTICS
Rev. A | Page 13 of 48
0
AVDD = CLKVDD = DVDD = DRVDD = 3.3 V, f
OSCIN
= f
ADC
= 80 MSPS, low-pass filter’s f
3 dB
= 30 MHz, AIN = 1 dBFS,
RIN = 50 , half- or full-duplex interface, default power bias settings.
0
FREQUENCY (MHz)
I
0
10
20
30
4
10
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
FUND = –1dBFS
SINAD = 59.3dBFS
ENOB = 9.56 BITS
SNR = 59.8dBFS
THD = –69.1dBFS
SFDR = –70.3dBc (THIRD HARMONIC)
RBW = 19.53kHz
Figure 9. Spectral Plot with 4k FFT of Input Sinusoid
with RxPGA = 0 dB and P
IN
= 9 dBm
0
0
FREQUENCY (MHz)
I
0
10
20
30
4
–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, P
IN
= 33.7 dBm, LPF f
3 dB
= 32 MHz, and RxPGA = 36 dB
0
INPUT AMPLITUDE (dBFS)
0dBFS = 2V p-p
S
T
–21
–18
–15
–12
–9
–6
–3
0
66
45
48
51
54
57
60
63
–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
(f
IN
= 8 MHz, LPF f
3 dB
= 26 MHz; RxPGA = 0 dB)
0
RxPGA GAIN (dB)
S
E
–6
0
6
12
18
24
30
36
42
48
62
41
44
47
50
53
56
59
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
0
RxPGA GAIN (dB)
T
–6
0
6
12
18
24
30
36
42
48
–55
–85
–80
–75
–70
–65
–60
5MHz
10MHz
15MHz
20MHz
30MHz
Figure 13. THD vs. RxPGA Gain and Frequency
0
RxPGA GAIN (dB)
S
T
–6
0
6
12
18
24
30
36
42
48
62
41
44
47
50
53
56
59
–40
–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
( f
IN
= 10 MHz)
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