AD9643 Analog Devices, AD9643 Datasheet - Page 21

• Manufacturer Part Number: AD9643
• Description: 14-Bit, 170/210/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9643

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 250MSPS
• Interface: LVDS,Par
• Analog Input Type: Diff-Bip
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

Data Sheet
Figure 36. AD9643-250 Two-Tone FFT with f
Figure 37. AD9643-250 Single-Tone SNR/SFDR vs. Sample Rate (f
–100
–120
–140
100
–20
–40
–60
–80
95
90
85
80
75
70
0
40
0
250MSPS
184.12MHz @ –7dBFS
187.12MHz @ –7dBFS
SFDR = 87dBc (94dBFS)
10
60
20
80
30
100
with f
40
SAMPLE RATE (MSPS)
f
120
FREQUENCY (MHz)
S
= 250 MSPS
50
IN
= 90.1 MHz
140
60
160
70
IN1
= 184.12, f
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
80
180
90 100 110 120
200
IN2
220
= 187.12 MHz,
240
S
)
Rev. B | Page 21 of 36
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
N – 5
Figure 38. AD9643-250 Grounded Input Histogram
N – 4
N – 3
N – 2
N – 1
OUTPUT CODE
N
N + 1
N + 2 N + 3 N + 4 N + 5
1.33LSB rms
16,378 TOTAL HITS
AD9643