AD9856(RevB) 查看數據表（PDF） - Analog Devices

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AD9856
(Rev.:RevB)

CMOS 200 MHz Quadrature Digital Upconverter

Analog Devices 

Typical Plots of Output Constellations

TRACE A: CH 1 QPSK MEAS TIME

1.5

CONST

300

M

/DIV

TRACE A: CH 1 16QAM MEAS TIME

1.25

CONST

250

M

/DIV

AD9856

–1.5

–1.9607843757

1.96078437567

Figure 13. QPSK, 65 MHz, 2.56 MS/s

TRACE A: CH 1 64QAM MEAS TIME

1

CONST

200

M

/DIV

–1.25

–1.6339869797

1.63398697972

Figure 15. 16-QAM, 65 MHz, 2.56 MS/s

TRACE A: CH 1 256QAM MEAS TIME

1

CONST

200

M

/DIV

–1

–1.3071895838

1.30718958378

Figure 14. 64-QAM, 42 MHz, 6 MS/s

TRACE A: CH 1 MSK1 MEAS TIME

1.5

CONST

300

M

/DIV

–1

–1.3071895838

1.30718958378

Figure 16. 256-QAM, 42 MHz, 6 MS/s

–1.5

–1.9607843757

1.96078437567

Figure 17. GMSK Modulation, 13 MS/s

REV. B

–9–

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