AD9271 Datasheet, PDF (17/58 Pages) Analog Devices – Octal LNA/VGA/AAF/ADC and Crosspoint Switch

Preliminary Technical Data
AD9271
TYPICAL PERFORMANCE CHARACTERISTICS
(fSAMPLE = 50 MSPS, AIN = 5 MHz, LPF = 1/3 × fSAMPLE, LNA gain = 6×)
2.00
1.50
1.00
0.50
0.00
-0.50
85C
25C
-40C
-1.00
-1.50
-2.00
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Vgain (V)
Figure 17. Absolute Gain Error vs. VGAIN at Three Temperatures
2000000
1800000
1600000
1400000
1200000
1000000
800000
600000
400000
200000
0
-5
-4
-3
-2
-1
0
1
2
3
4
5
Codes
Figure 20. Output-Referred Noise Histogram with Gain Pin at 0.0V, AD9271-
50
1200000
1000000
800000
600000
400000
200000
Figure 18. Gain Error Histogram
Figure 19. Gain Match Histogram for VGAIN = 0.2 V and 0.7 V
0
-5
-4
-3
-2
-1
0
1
2
3
4
5
Codes
Figure 21. Output-Referred Noise Histogram with Gain Pin at 1.0V, AD9271-
50
4.5
4
3.5
3
2.5
2
LNA Gain = 5x
1.5
LNA Gain = 6x
LNA Gain = 8x
1
0.5
0
0
5
10
15
20
25
Frequency (MHz)
Figure 22. Short-Circuit, Input-Referred Noise vs. Frequency
Rev. PrA | Page 17 of 58