AD9853 Analog Devices, AD9853 Datasheet - Page 10

• Manufacturer Part Number: AD9853
• Description: Programmable Digital OPSK/16-QAM Modulator
• Manufacturer: Analog Devices

Typical Plots of Eye Diagrams and Constellations
AD9853
–1.2
–1.2
1.2
1.2
–1.5
0
REF LVL
–7dBm
REF LVL
–7dBm
Figure 16. QPSK Modulation
Figure 17. QPSK Modulation
SYMBOLS
REAL
SR 1.28MHz CONSTELLATION
CF 42MHz MEAS SIGNAL
CF 42MHz MEAS SIGNAL
SR 1.28MHz EYE [1]
DEMOD QPSK
DEMOD QPSK
1.5
3
–10–
–1.2
–1.2
1.2
1.2
–1.5
0
REF LVL
–8dBm
REF LVL
–8dBm
Figure 18. 16-QAM Modulation
Figure 19. 16-QAM Modulation
SYMBOLS
REAL
SR 1.28MHz CONSTELLATION
CF 42MHz MEAS SIGNAL
CF 42MHz MEAS SIGNAL
SR 1.28MHz EYE [1]
DEMOD 16QAM
DEMOD 16QAM
1.5
3
REV. C