Datasheet

AD9277
Rev. 0 | Page 17 of 48
CW DOPPLER MODE
f
RF
= 2.5 MHz at −3 dBFS, f
4LO
= 10 MHz, R
S
= 50 Ω, LNA gain = 21.3 dB, LNA bias = high, all CW channels enabled, phase rotation 0°.
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)
08181-073
Figure 23. Quadrature 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)
QUADRATURE AMPLITUDE IMBALANCE (dB)
08181-074
Figure 24. Quadrature Amplitude Imbalance vs. Baseband Frequency
140
142
144
146
148
150
152
154
156
158
160
162
164
166
–20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0
INPUT LEVEL (dBFS)
OUTPUT-REFERRED SNR (dBc/ Hz)
08181-075
1kHz OFFSET
5kHz OFFSET
Figure 25. Output-Referred SNR vs. Input Level
175
170
165
160
155
150
145
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
BASEBAND FREQUENCY (Hz)
DYNAMIC RANGE (dBFS/ Hz)
08181-076
CH A + B + C + D + E + F + G + H
CH A + B + C + D
CH A + B
CH A
Figure 26. Small-Signal Dynamic Range
12
10
8
6
4
2
0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
BASEBAND FREQUENCY (Hz)
NOISE FIGURE (dB)
08181-077
Figure 27. Noise Figure vs. Baseband Frequency
130
135
140
145
150
155
160
165
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
BASEBAND FREQUENCY (Hz)
OUTPUT-REFERRED SNR (dBc/ Hz)
08181-078
Figure 28. Output-Referred SNR vs. Baseband Frequency