AD9853 Analog Devices, AD9853 Datasheet - Page 7

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

REV. C
Modulated Output Spectrum with 3.3 V Supply,
–100
–100
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
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–90
–10
–20
–30
–40
–50
–60
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–80
–90
0
0
Figure 3. QPSK, 1.28 Mb/s, A
0
Figure 1. QPSK, 320 kb/s, A
Figure 2. QPSK, 640 kb/s, A
START 0Hz
START 0Hz
START 0Hz
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
6MHz/
6MHz/
6MHz/
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
OUT
OUT
OUT
= 10 MHz
= 20 MHz
= 42 MHz
STOP 60MHz
STOP 60MHz
STOP60 MHz
Typical Performance Characteristics–AD9853
= 0.25, 20.48 MHz REFCLK
–7–
–100
–100
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
0
Figure 4. QPSK, 1.28 Mb/s, A
Figure 5. QPSK, 2.56 Mb/s, A
Figure 6. QPSK, 5.12 Mb/s, A
START 0Hz
START 0Hz
START 0Hz
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
6MHz/
6MHz/
6MHz/
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
RBW = 3kHz
VBW = 3kHz
SWT = 17s
RF ATT = 10dB
REF LVL = –20dBm
OUT
OUT
OUT
= 10 MHz
= 20 MHz
= 42 MHz
STOP 60MHz
STOP 60MHz
STOP60 MHz