AD6644AST-65 Analog Devices Inc, AD6644AST-65 Datasheet - Page 10

• Manufacturer Part Number: AD6644AST-65
• Description: IC ADC 14BIT 65MSPS CMOS 52-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD6644AST-65

• Rohs Status: RoHS non-compliant
• Number Of Bits: 14
• Sampling Rate (per Second): 65M
• Data Interface: Parallel
• Number Of Converters: 4
• Power Dissipation (max): 1.3W
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 52-LQFP

AD6644
100
–100
–110
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110
100
95
90
85
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65
60
55
–10
–20
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–70
–80
–90
90
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60
50
40
30
20
10
0
0
–80
0
0
ENCODE = 65MSPS
AIN = 19MHz,
NO DITHER
Figure 10. Harmonics vs. Analog Frequency (IF)
Figure 12. Two Tones at 19 MHz and 19.5 MHz
10
ENCODE = 65MSPS
AIN = 15.5MHz
–70
WORST OTHER SPUR
HARMONICS (SECOND, THIRD)
19.5MHz @ –7dBFS
20
5
ANALOG INPUT POWER LEVEL (dBFS)
Figure 11. Single-Tone SFDR
–60
ANALOG FREQUENCY (MHz)
30
10
–50
FREQUENCY (MHz)
40
50
15
–40
60
–30
ENCODE = 65MSPS
AIN = –1dBFS
20
dBc
SFDR = 90dB
REFERENCE LINE
70
dBFS
–20
80
25
–10
90
30
100
0
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–100
–110
–120
–130
110
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100
–10
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–30
–40
–50
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–90
90
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40
30
20
10
95
90
85
80
75
70
65
60
0
–77
0
0
0
Figure 13. Two Tones at 15 MHz and 15.5 MHz
ENCODE = 65MSPS
F1 = 15MHz
F2 = 15.5MHz
10
Figure 15. SNR, Worst Spurious vs. Encode
–67
5
INPUT POWER LEVEL [(F1 = F2) dBFS]
20
Figure 14. Two-Tone SFDR
ENCODE FREQUENCY (MHz)
–57
30
10
FREQUENCY (MHz)
WORST SPUR
–47
40
SNR
15
50
–37
AIN = 2.2MHz @ –1dBFS
ENCODE = 65MSPS
AIN = 15MHz,
NO DITHER
dBc
60
20
SFDR = 90dB
REFERENCE LINE
15.5MHz @ –7dBFS
–27
70
25
dBFS
80
–17
30
90
–7