AD9649 Analog Devices, AD9649 Datasheet - Page 12

• 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

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 11. AD9649-80 SNR/SFDR vs. Sample Rate with AIN = 9.7 MHz
120
100
100
–0.1
–0.2
–0.3
–0.4
–0.5
80
60
40
20
90
80
70
60
50
40
30
20
10
0.5
0.4
0.3
0.2
0.1
0
0
Figure 10. AD9649-80 SNR/SFDR vs. Input Frequency (AIN)
10
0
0
0
Figure 12. AD9649-80 DNL Error with f
2048
20
50
4096
30
with 2 V p-p Full Scale
INPUT FREQUENCY (MHz)
SAMPLE RATE (MSPS)
6144
SNR (dBFS)
SNR (dBFS)
OUTPUT CODE
SFDR (dBc)
40
100
8192
SFDR (dBc)
50
10,240 12,288 14,336 16,384
60
IN
150
= 9.7 MHz
70
200
80
Rev. 0 | Page 12 of 32
Figure 13. AD9649-80 SNR/SFDR vs. Input Amplitude (AIN) with f
450,000
400,000
350,000
300,000
250,000
200,000
150,000
100,000
–0.5
–1.0
–1.5
–2.0
120
100
50,000
2.0
1.5
1.0
0.5
80
60
40
20
0
0
–90
0
0
Figure 14. AD9649-80 Grounded Input Histogram
N – 4 N – 3 N – 2 N – 1
–80
2048
Figure 15. AD9649-80 INL with f
SNRFS
4096
INPUT AMPLITUDE (dBFS)
–60
6144
SFDR
OUTPUT CODE
SFDRFS
OUTPUT CODE
8192
–40
N
10,240 12,288 14,336 16,384
SNR
N + 1 N + 2 N + 3 N + 4
IN
= 9.7 MHz
–20
AD9649
IN
= 9.7 MHz
0