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