Datasheet

AD9279
Rev. 0 | Page 16 of 44
CW DOPPLER MODE
f
IN
= 5 MHz, R
S
= 50 Ω, LNA gain = 21.3 dB, LNA bias = mid-high, all CW channels enabled, phase rotation 0 degrees.
1.2
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
100 1k 10k
BASEBAND FREQUENCY (Hz)
QUADRATURE PHASE ERROR (Degrees)
09423-018
Figure 21. Quadrature (I/Q) Phase Error vs. Baseband Frequency
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
100 1k 10k
BASEBAND FREQUENCY (Hz)
I/Q AMPLITUDE IMBALANCE (dB)
09423-019
Figure 22. Quadrature (I/Q) Amplitude Error vs. Baseband Frequency
12
10
8
6
4
2
0
0 1000 10,0002000 3000 4000 5000 6000 7000 8000 9000
BASEBAND FREQUENCY (Hz)
NOISE FIGURE (dB)
09423-020
Figure 23. Noise Figure vs. Baseband Frequency
130
135
140
145
150
155
160
165
0 1000 10,0002000 3000 4000 5000 6000 7000 8000 9000
BASEBAND FREQUENCY (Hz)
OUTPUT-REFERRED SNR (dBFS/ Hz)
09423-021
Figure 24. Output-Referred SNR vs. Baseband Frequency