Analog Devices AD6122 Manual page 8

–Typical Performance Characteristics
AD6122
REF LEV
–40dBm
–40
–50
–60
–70
–80
–90
–100
–110
CL1
–120
–130
–140
CENTER 130.38MHz
Figure 6. Spectral Plot at Modulator Outputs: ACPR
–35
–40
–45
–50
50 100 150
FREQUENCY – MHz
Figure 7. Modulator LO Leakage vs. Output Frequency
–15
–20
–25
–30
–35
–40
50 100 150
OUTPUT FREQUENCY – MHz
Figure 8. Modulator Output Desired Sideband vs.
Output Frequency Without Roofing Filter
RBW 30kHz
VBW 100kHz
SWT 2s
UNIT dBm
1
1 (T1) –49.18dBm
130.67458918MHz
CH PWR –33.92dBm
ACP UP –77.32dB
AVE LOW 77.46dB
CU1
519kHz/DIV SPAN 5.19MHz
200 250 300 350
200 250 300 350
–30
A
–35
–40
–45
50 100
Figure 9. Modulator Output Undesired Sideband vs.
Output Frequency
–10
–15
–20
–25
–30
–35
–14.0 –12.0
Figure 10. Modulator Gain: Input (dBV) vs. Output (dBm)
–45
–50
–55
–60
–65
50 100
Figure 11. Modulator Third Harmonic
–8–
150 200 250 300
OUTPUT FREQUENCY – MHz
–10.0 –8.0 –6.0 –4.0
MODULATOR, I = Q – dBV
150 200 250 300
OUTPUT FREQUENCY – MHz
350
–2.0
350
REV. B