AD9649 Analog Devices, AD9649 Datasheet - Page 11

• Manufacturer Part Number: AD9649
• Description: 14-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9649

• Resolution (bits): 14bit
• # 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
AD9649-80
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. AD9649-80 Two-Tone FFT with f
–105
–120
–105
–120
–105
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 5. AD9649-80 Single-Tone FFT with f
0
0
0
Figure 4. AD9649-80 Single-Tone FFT with f
80MSPS
30.5MHz @ –7dBFS
32.5MHz @ –7dBFS
SFDR = 89.5dBc (96.5dBFS)
F2 – F1
4
4
4
8
8
8
2F2 + F1
12
12
12
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
2F1 + F2
16
16
16
F1 + F2
2
2
20
20
20
IN1
6
6
= 30.5 MHz and f
80MSPS
9.7MHz @ –1dBFS
SNR = 73.4dB (74.4dBFS)
SFDR = 94.4dBc
80MSPS
70.3MHz @ –1dBFS
SNR = 72.1dB (73.1dBFS)
SFDR = 93.5dBc
24
24
24
2F2 – F1
28
28
28
IN
3
3
IN
= 70.3 MHz
= 9.7 MHz
5
5
32
32
32
2F1 – F2
IN2
36
36
36
= 32.5 MHz
4
4
Rev. 0 | Page 11 of 32
Figure 9. AD9649-80 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)
–100
–120
–105
–120
–105
–120
–20
–40
–60
–80
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 7. AD9649-80 Single-Tone FFT with f
0
Figure 8. AD9649-80 Single-Tone FFT with f
–90
0
0
2
80MSPS
30.5MHz @ –1dBFS
SNR = 73.2dB (74.2dBFS)
SFDR = 93.6dBc
80MSPS
200MHz @ –1dBFS
SNR = 70.5dB (71.5dBFS)
SFDR = 80.2dBc
4
IMD3 (dBFS)
6
4
4
–78
with f
SFDR (dBFS)
IMD3 (dBc)
5
8
8
IN1
–66
= 30.5 MHz and f
3
12
12
INPUT AMPLITUDE (dBFS)
SFDR (dBc)
FREQUENCY (MHz)
FREQUENCY (MHz)
16
16
–54
2
20
20
–42
IN2
6
24
24
= 32.5 MHz
–30
28
28
IN
IN
= 30.5 MHz
= 200 MHz
32
32
–18
AD9649
36
36
5
4
3
–6