AD9856 データシートの表示（PDF） - Analog Devices
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AD9856 Datasheet PDF : 37 Pages
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AD9856
TYPICAL PERFORMANCE CHARACTERISTICS
TYPICAL MODULATED OUTPUT SPECTRAL PLOTS
REF LVL
–25dBm
0
RBW
VBW
SWT
10kHz
1kHz
12.5s
RF ATT 10dB
UNIT dBm
–8
–16
–24
1AP
–32
–40
–48
–56
–64
–72
–80
START 0Hz
5MHz/
STOP 50MHz
REF LVL
–25dBm
0
–8
–16
–24
–32
–40
–48
–56
–64
–72
–80
START 0Hz
RBW 10kHz
VBW 1kHz
SWT 20s
RF ATT 10dB
UNIT dBm
1AP
8MHz/
STOP 80MHz
Figure 3. QPSK at 42 MHz and 2.56 MS/sec; 10.24 MHz External Clock with
REFCLK Multiplier = 12, CIC = 3, HB3 On, 2× Data
REF LVL
–30dBm
0
RBW 10kHz
VBW 1kHz
SWT 10s
RF ATT 10dB
UNIT dBm
–8
–16
–24
1AP
–32
–40
–48
–56
–64
–72
–80
0START 0Hz
4MHz/
STOP 40MHz
Figure 5. 16-QAM at 65 MHz and 2.56 MS/sec; 10.24 MHz External Clock with
REFCLK Multiplier = 18, CIC = 9, HB3 Off, 2× Data
REF LVL
–30dBm
0
RBW 10kHz
VBW 1kHz
SWT 12.5s
RF ATT 10dB
UNIT dBm
–8
–16
–24
1AP
–32
–40
–48
–56
–64
–72
–80
START 0Hz
5MHz/
STOP 50MHz
Figure 4. 64-QAM at 28 MHz and 6 MS/sec; 36 MHz External Clock with
REFCLK Multiplier = 4, CIC = 2, HB3 Off, 3× Data
Figure 6. 256-QAM at 38 MHz and 6 MS/sec; 48 MHz External Clock with
REFCLK Multiplier = 4, CIC = 2, HB3 Off, 4× Data
Rev. C | Page 8 of 36
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