AD6643 Analog Devices, AD6643 Datasheet - Page 15

• Manufacturer Part Number: AD6643
• Description: Dual IF Receiver
• Manufacturer: Analog Devices

Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = maximum sample rate per speed grade, DCS enabled, 1.75 V p-p differential input, VIN =
−1.0 dBFS, 32k sample, T
–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
0
0
Figure 8. AD6643-200 Single Tone FFT, f
Figure 6. AD6643-200 Single Tone FFT, f
Figure 7. AD6643-200 Single Tone FFT, f
200MSPS
90.1MHz @ –1dBFS
SNR = 65.5dB (66.5dBFS)
SFDR = 88dBc
200MSPS
140.1MHz @ –1dBFS
SNR = 65.4dB (66.4dBFS)
SFDR = 87.5dBc
10
10
10
THIRD HARMONIC
20
20
20
30
30
30
A
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
= 25°C, unless otherwise noted.
40
40
40
50
50
50
200MSPS
30.1MHz @ –1dBFS
SNR = 65.8dB (66.8dBFS)
SFDR = 88dBc
60
60
60
70
70
70
IN
IN
IN
= 140.1 MHz
= 30.1 MHz
= 90.1 MHz
80
80
80
90
90
90
100
100
100
Rev. A | Page 15 of 36
–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
Figure 10. AD6643-200 Single Tone FFT, f
Figure 11. AD6643-200 Single Tone FFT, f
0
Figure 9. AD6643-200 Single Tone FFT, f
0
0
200MSPS
305.1MHz @ –1dBFS
SNR = 64.4dB (65.4dBFS)
SFDR = 79dBc
10
10
10
20
20
20
SECOND HARMONIC
30
30
30
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
40
40
40
THIRD HARMONIC
50
50
50
THIRD HARMONIC
THIRD HARMONIC
200MSPS
185.1MHz @ –1dBFS
SNR = 65.2dB (66.2dBFS)
SFDR = 87.5dBc
60
60
60
200MSPS
220.1MHz @ –1dBFS
SNR = 65dB (66dBFS)
SFDR = 84dBc
70
IN
70
70
IN
IN
= 185.1 MHz
= 220.1 MHz
= 305.1 MHz
80
80
80
AD6643
90
90
90
100
100
100