AD9856AST Analog Devices Inc, AD9856AST Datasheet - Page 11
AD9856AST
Manufacturer Part Number
AD9856AST
Description
IC QUADRATURE DGTL UPCONV 48TQFP
Manufacturer
Analog Devices Inc
Series
AD9856r
Datasheet
1.AD9856PCB.pdf
(36 pages)
Specifications of AD9856AST
Rohs Status
RoHS non-compliant
Function
Upconverter
Frequency
5MHz ~ 200MHz
Rf Type
HFC Cable Network
Package / Case
48-LQFP
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Part Number
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Quantity
Price
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Part Number:
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HOLTEK
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Part Number:
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Manufacturer:
AD
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TYPICAL PLOTS OF OUTPUT CONSTELLATIONS
TRACE A: CH 1 QPSK MEAS TIME
TRACE A: CH 1 64QAM MEAS TIME
TRACE A: CH 1 16QAM MEAS TIME
CONST
CONST
CONST
–1.25
/DIV
–1.5
/DIV
1.25
/DIV
300
200
250
1.5
–1
M
M
M
1
–1.9607843757
–1.3071895838
–1.6339869797
Figure 17. 16-QAM, 65 MHz, 2.56 MS/sec
Figure 15. QPSK, 65 MHz, 2.56 MS/sec
Figure 16. 64-QAM, 42 MHz, 6 MS/sec
1.30718958378
1.63398697972
1.96078437567
Rev. C | Page 11 of 36
TRACE A: CH 1 256QAM MEAS TIME
TRACE A: CH 1 MSK1 MEAS TIME
CONST
CONST
/DIV
–1.5
/DIV
200
300
1.5
–1
M
M
1
–1.9607843757
–1.3071895838
Figure 19. GMSK Modulation, 13 MS/sec
Figure 18. 256-QAM, 42 MHz, 6 MS/sec
1.30718958378
1.96078437567
AD9856