AD9865 Analog Devices, AD9865 Datasheet - Page 12

• Manufacturer Part Number: AD9865
• Description: 10-Bit Broadband Modem Mixed Signal Front End (MxFE®)
• Manufacturer: Analog Devices

Specifications of AD9865

• Resolution (bits): 10bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 6.3 V p-p,8 mV p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9865
TYPICAL PERFORMANCE CHARACTERISTICS
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.
–100
–110
–120
–130
–100
–30
–40
–50
–60
–70
–80
–90
66
63
60
57
54
51
48
45
–10
–20
–30
–40
–50
–60
–70
–80
–90
Figure 4. Spectral Plot with 4 k FFT of 84-Carrier DMT Signal
10
–21
Figure 5. SINAD and THD vs. Input Amplitude and Supply
Figure 3. Spectral Plot with 4 k FFT of Input Sinusoid with
with PAR = 10.2 dB, P
0
0
0
(f
IN
–18
= 8 MHz, LPF f
5
RxPGA = 0 dB and P
SINAD @ 3.14V
SINAD @ 3.3V
SINAD @ 3.46V
6.25
–15
INPUT AMPLITUDE (dBFS)
0dBFS = 2V p-p
IN
FREQUENCY (MHz)
FREQUENCY (MHz)
−3 dB
–12
= −33.7 dBm, and RxPGA = 36 dB
10
FUND = –1dBFS
SINAD = 59.1dBFS
ENOB = 9.53 BITS
SNR = 60.2dBFS
THD = –65.2dBFS
SFDR = –64.9dBc (THIRD HARMONIC)
RBW = 12.21kHz
= 26 MHz; Rx PGA = 0 dB)
12.50
–9
IN
15
= 9 dBm
THD @ 3.14V
THD @ 3.3V
THD @ 3.46V
–6
18.75
RBW = 12.2kHz
–3
20
OSCIN
0
–50
–56
–62
–68
–74
–80
–86
–92
25.00
= f
25
ADC
Rev. A | Page 12 of 48
= 50 MSPS, low-pass filter’s f
62
59
56
53
50
47
44
41
62
59
56
53
50
47
44
41
–55
–60
–65
–70
–75
–80
–85
–6
–6
–6
Figure 6. SINAD/ENOB vs. RxPGA Gain and Frequency
Figure 8. SINAD/THD Performance vs. RxPGA Gain
0
0
Figure 7. THD vs. RxPGA Gain and Frequency
0
THD @ +25°C
THD @ +85°C
THD @ –40°C
−3 dB
6
6
and Temperature ( f
6
= 22 MHz, AIN = −1 dBFS,
12
12
RxPGA GAIN (dB)
RxPGA GAIN (dB)
12
RxPGA GAIN (dB)
18
18
18
24
24
24
IN
= 5 MHz)
30
30
30
SINAD @ +25°C
SINAD @ +85°C
SINAD @ –40°C
36
36
36
42
42
1MHz
5MHz
10MHz
15MHz
20MHz
1MHz
5MHz
10MHz
15MHz
20MHz
42
48
48
10.0
9.5
9.0
8.5
8.0
7.5
7.0
6.5
–45
–50
–55
–60
–65
–70
–75
–80
48