AD6645ASQZ-80 Analog Devices Inc, AD6645ASQZ-80 Datasheet - Page 11

• Manufacturer Part Number: AD6645ASQZ-80
• Description: IC ADC 14BIT 80MSPS 52LQFP-PQ4
• Manufacturer: Analog Devices Inc

Specifications of AD6645ASQZ-80

• Design Resources: Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
• Number Of Bits: 14
• Sampling Rate (per Second): 80M
• Data Interface: Parallel
• Number Of Converters: 4
• Power Dissipation (max): 1.75W
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 52-LQFP Exposed Pad, 52-eLQFP, 52-HLQFP
• For Use With: AD6645-80/PCBZ - BOARD EVAL ADC 80MSPS AD6645AD6645-MIL/PCB - BOARD EVAL AD6645-MIL/PCB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Figure 18. SNR, Worst-Case Spurious vs. Encode @ 2.2 MHz
–77
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Figure 16. Two-Tone SFDR @ 30.5 MHz and 31.5 MHz
Figure 17. Two-Tone SFDR @ 30.5 MHz and 31.5 MHz
ENCODE = 80MSPS
AIN = 30.5MHz,
31.5MHz (–7dBFS)
NO DITHER
ENCODE = 80MSPS
F1 = 30.5MHz
F2 = 31.5MHz
–67
5
30
INPUT POWER LEVEL (F1 = F2 dBFS)
WORST SPUR @ AIN = 2.2MHz
10
–57
ENCODE FREQUENCY (MHz)
SNR @ AIN = 2.2MHz
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FREQUENCY (MHz)
15
–47
60
dBc
20
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dBFS
25
SFDR = 90dB
REFERENCE LINE
75
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30
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105
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40
Rev. D | Page 11 of 24
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Figure 21. SNR, Worst-Case Spurious vs. Encode @ 69.1 MHz
0
0
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15
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Figure 19. Two-Tone SFDR @ 55.25 MHz and 56.25 MHz
Figure 20. Two-Tone SFDR @ 55.25 MHz and 56.25 MHz
ENCODE = 80MSPS
AIN = 55.25MHz,
56.25MHz (–7dBFS)
NO DITHER
ENCODE = 80MSPS
F1 = 55.25MHz
F2 = 56.25MHz
–67
5
30
INPUT POWER LEVEL (F1 = F2 dBFS)
WORST SPUR @ AIN = 69.1MHz
10
–57
ENCODE FREQUENCY (MHz)
SNR @ AIN = 69.1MHz
45
FREQUENCY (MHz)
15
–47
dBc
60
20
–37
SFDR = 90dB
REFERENCE LINE
dBFS
25
75
–27
30
90
–17
35
AD6645
105
–7
40