AD9644 Analog Devices, AD9644 Datasheet - Page 18

• Manufacturer Part Number: AD9644
• Description: 14-Bit, 80 MSPS/155 MSPS, 1.8V Dual, Serial Output A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9644

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 155MSPS
• Analog Input Type: Diff-Bip
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined

AD9644
Figure 35. AD9644-155 Two-Tone FFT with f
Figure 37. AD9644-155 Single-Tone SNR/SFDR vs. Sample Rate (f
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
100
Figure 36. AD9644-155 Two-Tone FFT with f
95
90
85
80
75
70
0
0
50
0
0
7.75 15.50 23.25 31.00 38.75 46.50 54.25 62.00 69.75 77.50
7.75 15.50 23.25 31.00 38.75 46.50 54.25 62.00 69.75 77.50
65
80
SAMPLE RATE (MSPS)
with f
FREQUENCY (MHz)
FREQUENCY (MHz)
f
IN2
= 172.1 MHz
95
IN
= 70. MHz
155MSPS
29.9MHz @ –7dBFS
32.9MHz @ –7dBFS
SFDR = 89.8dBc (96.8dBFS)
155MSPS
169.1MHz @ –7dBFS
172.1MHz @ –7dBFS
SFDR = 89.1dBc (96.1dBFS)
110
IN1
= 29.9 MHz and f
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
IN1
125
= 169.1 MHz and
140
IN2
= 32.9 MHz
155
S
)
Rev. C | Page 18 of 44
–0.25
4000
3500
3000
2500
2000
1500
1000
–0.2
–0.4
–0.6
–0.8
0.25
–0.5
500
0.8
0.6
0.4
0.2
0.5
–1
1
0
0
0
0
0
N – 5 N – 4 N – 3 N – 2 N – 1
Figure 38. AD9644-155 Grounded Input Histogram
Figure 40. AD9644-155 DNL with f
Figure 39. AD9644-155 INL with f
2000
2000
4000
4000
6000
6000
OUTPUT CODE
OUTPUT CODE
OUTPUT CODE
8000
8000
N
10000 12000 14000 16000
N + 1 N + 2 N + 3 N + 4 N + 5
10000 12000 14000 16000
IN
IN
= 30.3 MHz
= 30.3 MHz
Data Sheet