AD6645-80/PCBZ Analog Devices Inc, AD6645-80/PCBZ Datasheet - Page 12

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AD6645-80/PCBZ

Manufacturer Part Number
AD6645-80/PCBZ
Description
BOARD EVAL ADC 80MSPS AD6645
Manufacturer
Analog Devices Inc
Series
SoftCell®r
Datasheet

Specifications of AD6645-80/PCBZ

Design Resources
Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
Number Of Adc's
1
Number Of Bits
14
Sampling Rate (per Second)
80M
Data Interface
Parallel
Inputs Per Adc
1 Differential
Input Range
2.2 Vpp
Power (typ) @ Conditions
1.5W @ 80MSPS
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
AD6645 80MSPS
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AD6645
–100
–110
–120
–130
–100
–110
–120
–130
–10
–20
–30
–40
–50
–60
–70
–80
–90
110
100
–10
–20
–30
–40
–50
–60
–70
–80
–90
90
80
70
60
50
40
30
20
10
0
0
0
90
0
Figure 24. Single Tone @ 69.1 MHz, Encode = 76.8 MSPS
0
ENCODE = 80.0MSPS
AIN = 30.5MHz @ –29.5dBFS
NO DITHER
ENCODE = 80.0MSPS
AIN = 30.5MHz
NO DITHER
80
Figure 22. 1 M Sample FFT Without Dither
5
5
5
Figure 23. SFDR Without Dither
70
10
10
ANALOG INPUT LEVEL (dBFS)
3
60
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
2
50
2
20
20
6
SFDR = 90dB
REFERENCE LINE
40
ENCODE = 76.8MSPS
AIN = 69.1MHz @ –1dBFS
SNR = 73.5dB
SFDR = 89.0dBc
3
25
25
30
30
30
20
6
4
35
35
10
4
5
40
40
0
Rev. D | Page 12 of 24
–100
–110
–120
–130
–100
–110
–120
–130
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
110
100
90
80
70
60
50
40
30
20
10
Figure 27. W-CDMA Tone @ 69.1 MHz, Encode = 76.8 MSPS
0
0
0
–90
0
0
ENCODE = 80.0MSPS
AIN = 30.5MHz @ –29.5dBFS
WITH DITHER @ –19.2 dBm
ENCODE = 80.0MSPS
AIN = 30.5MHz
WITH DITHER @ –19.2dBm
SFDR = 100dB
REFERENCE LINE
–80
5
5
Figure 25. 1 M Sample FFT with Dither
5
–70
10
10
Figure 26. SFDR with Dither
ANALOG INPUT LEVEL (dBFS)
3
–60
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
2
–50
2
20
20
–40
SFDR = 90dB
REFERENCE LINE
ENCODE = 76.8MSPS
AIN = W-CDMA @ 69.1MHz
6
3
25
25
–30
30
30
–20
6
4
35
35
–10
4
5
40
40
0

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