AD6644ASTZ-40 Analog Devices Inc, AD6644ASTZ-40 Datasheet - Page 10

• Manufacturer Part Number: AD6644ASTZ-40
• Description: IC ADC 14BIT 40MSPS CMOS 52-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD6644ASTZ-40

• Data Interface: Parallel
• Number Of Bits: 14
• Sampling Rate (per Second): 40M
• 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
• Resolution (bits): 14bit
• Input Channel Type: Differential
• Supply Voltage Range - Analogue: 4.85V To 5.25V
• Supply Voltage Range - Digital: 3V To 3.6V
• Supply Current: 245mA
• Sampling Rate: 40MSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD6644
100
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0
0
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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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95
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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