AD6655-125EBZ1 AD [Analog Devices], AD6655-125EBZ1 Datasheet - Page 24

• Manufacturer Part Number: AD6655-125EBZ1
• Description: IF Diversity Receiver
• Manufacturer: AD [Analog Devices]

AD6655
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DVDD = 1.8 V, DRVDD = 1.8 V, sample rate = 150 MSPS, DCS enabled, 1.0 V internal reference, 2 V p-p differential
input, VIN = −1.0 dBFS, 64k sample, T
the location of the second and third harmonics is noted when they fall in the pass band of the filter.
Figure 19. AD6655-150 Single-Tone FFT with f
Figure 20. AD6655-150 Single-Tone FFT with f
Figure 21. AD6655-150 Single-Tone FFT with f
–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
150MSPS
30.3MHz @ –1dBFS
SNR = 74.8dBc (75.8dBFS)
SFDR = 100dBc
f
150MSPS
140.1MHz @ –1dBFS
SNR = 74.3dBc (75.3dBFS)
SFDR = 83.3dBc
f
NCO
NCO
SECOND HARMONIC
= 24MHz
= 56MHz
5
5
5
THIRD HARMONIC
10
10
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
15
THIRD HARMONIC
20
20
20
150MSPS
2.4MHz @ –1dBFS
SNR = 74.7dBc (75.7dBFS)
SFDR = 86.5dBc
f
NCO
IN
A
IN
IN
= 2.4 MHz, f
= 25°C, NCO enabled, FIR filter enabled, unless otherwise noted. In the FFT plots that follow,
= 30.3 MHz, f
= 70.1 MHz, f
= 18.75MHz
25
25
25
30
30
30
NCO
NCO
NCO
= 18.75 MHz
35
35
35
= 24 MHz
= 56 MHz
Rev. 0 | Page 24 of 84
–100
–120
–140
–100
–120
–140
–100
–120
–140
Figure 22. AD6655-150 Single-Tone FFT with f
Figure 23. AD6655-150 Single-Tone FFT with f
Figure 24. AD6655-150 Single-Tone FFT with f
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
0
0
150MSPS
140.1MHz @ –1dBFS
SNR = 73.7dBc (74.7dBFS)
SFDR = 82.8dBc
f
150MSPS
220.1MHz @ –1dBFS
SNR = 71.8dBc (72.8dBFS)
SFDR = 81.4dBc
f
150MSPS
332.1MHz @ –1dBFS
SNR = 71.7dBc (72.7dBFS)
SFDR = 95.0dBc
f
NCO
NCO
NCO
THIRD HARMONIC
= 126MHz
= 205MHz
= 321.5MHz
5
5
5
10
10
10
f
NCO
f
f
NCO
NCO
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
15
= 321.5 MHz
= 126 MHz
= 205 MHz
SECOND HARMONIC
THIRD HARMONIC
20
20
20
25
25
25
IN
IN
IN
= 140.1 MHz,
= 220.1 MHz,
= 332.1 MHz,
30
30
30
35
35
35