AD9629 Analog Devices, AD9629 Datasheet - Page 11

• Manufacturer Part Number: AD9629
• Description: 12-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9629

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

TYPICAL PERFORMANCE CHARACTERISTICS
AD9629-80
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, 50% duty
cycle clock, unless otherwise noted.
Figure 6. AD9629-80 Two-Tone FFT with f
–105
–120
–135
–105
–120
–135
–105
–120
–135
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
0
0
0
Figure 4. AD9629-80 Single-Tone FFT with f
0
0
Figure 5. AD9629-80 Single-Tone FFT with f
0
F2 – F1 2F2 – F1
80MSPS
28.3 @ –7dBFS
30.6 @ –7dBFS
SFDR = 90dBc
4
4
4
8
8
8
+
2F1 + F2
12
12
12
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
6
16
16
16
F1 + F2
80MSPS
9.7MHz @ –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 93.6dBc
2
20
20
20
80MSPS
69MHz @ –1dBFS
SNR = 69.9dB (70.9dBFS)
SFDR = 94.3dBc
IN1
6
2
2F2 – F1
= 28.3 MHz and f
24
24
24
+
5
28
28
28
3
IN
IN
= 9.7 MHz
5
= 69 MHz
32
32
32
2F1 – F2
3
IN2
36
36
36
4
= 30.6 MHz
4
40
40
40
Rev. 0 | Page 11 of 32
Figure 9. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with f
–105
–120
–135
–105
–120
–135
–100
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–20
–40
–60
–80
Figure 8. AD9629-80 Single-Tone FFT with f
0
0
Figure 7. AD9629-80 Single-Tone FFT with f
0
–70
0
0
80MSPS
30.6MHz @ –1dBFS
SNR = 70.1dB (71.1dBFS)
SFDR = 94.4dBc
80MSPS
210.3MHz @ –1dBFS
SNR = 67.9dB (68.9dBFS)
SFDR = 83.2dBc
SFDR (dBFS)
IMD3 (dBFS)
4
4
SFDR (dBc)
IMD3 (dBc)
–60
5
8
8
3
12
12
5
–50
and f
3
INPUT AMPLITUDE (dBFS)
FREQUENCY (MHz)
FREQUENCY (MHz)
16
16
IN2
= 32.5 MHz
–40
6
2
20
20
2
+
24
24
6
–30
+
28
28
IN
IN
= 210.3 MHz
= 30.6 MHz
–20
32
32
AD9629
36
36
IN1
–10
4
= 30.5 MHz
4
40
40