AD9642 Analog Devices, AD9642 Datasheet - Page 15

• Manufacturer Part Number: AD9642
• Description: 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9642

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 250MSPS
• Interface: LVDS
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

Figure 36. AD9642-250 Two-Tone FFT with f
Figure 35. AD9642-250 Two-Tone SFDR/IMD3 vs. Input Amplitude (A
Figure 34. AD9642-250 Two-Tone SFDR/IMD3 vs. Input Amplitude (A
–100
–120
–140
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
–90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0
–90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3
0
0
0
with f
0
with f
250MSPS
89.12MHz @ –7.0dBFS
92.12MHz @ –7.0dBFS
SFDR = 88dBc (95dBFS)
IN1
IN1
= 184.12 MHz, f
= 89.12 MHz, f
IMD3 (dBc)
IMD3 (dBFS)
25
IMD3 (dBc)
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
SFDR (dBFS)
SFDR (dBc)
FREQUENCY (MHz)
50
IN2
SFDR (dBFS)
IN2
IMD3 (dBFS)
SFDR (dBc)
= 92.12 MHz, f
= 187.12 MHz, f
IN1
75
= 89.12 MHz, f
S
= 250 MSPS
S
= 250 MSPS
100
IN2
= 92.12 MHz
–7.0
125
IN
)
IN
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)
Figure 37. AD9642-250 Two Tone FFT with f
Figure 38. AD9642-250 Single-Tone SNR/SFDR vs. Sample Rate (f
Figure 39. AD9642-250 Grounded Input Histogram, f
–100
–120
–140
–20
–40
–60
–80
5000
4500
4000
3500
3000
2500
2000
1500
1000
100
500
95
90
85
80
75
70
0
0
0
N – 4 N – 3 N – 2 N – 1
25
SAMPLE RATE (MSPS)
with f
FREQUENCY (MHz)
50
OUTPUT CODE
IN
SFDR
= 90 MHz
N
SNR
N + 1 N + 2 N + 3 N + 4 N + 5
IN1
75
= 184.12 MHz, f
250MSPS
184.12MHz AT –7dBFS
187.12MHz AT –7dBFS
SFDR = 87dBc (94dBFS)
0.847LSB rms
16,384 TOTAL HITS
100
S
= 250 MSPS
IN2
AD9642
= 187.12 MHz
12 5
S
)