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AD9789BBCZ датащи(PDF) 19 Page - Analog Devices

номер детали AD9789BBCZ
подробное описание детали  14-Bit, 2400 MSPS RF DAC with 4-Channel Signal Processing
PDF  76 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9789BBCZ датащи(HTML) 19 Page - Analog Devices

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AD9789
Rev. A | Page 19 of 76
CENTER 834.00MHz
RES BW 30kHz
VBW 300kHz
SPAN 18MHz
SWEEP 58.4ms (601 PTS)
ATTEN 2dB
REF –35.96dBm
FREQ.
LOWER
UPPER
OFFSET
REF BW
dBc
dBm
dBc
dBm
CARRIER POWER
–23.62dBm/
6.00000MHz
RMS RESULTS
3.375MHz 750.0kHz
–72.95 –96.56
–10.86 –34.48
6.375MHz 5.250MHz –69.38 –92.99
–0.51
–24.13
Figure 46. Zoomed 4-Channel QAM ACLR, fOUT = 840 MHz, Temperature =
25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 1
50
48
46
44
42
40
38
36
34
32
30
50
150
250
350
450
550
650
750
850
950
fOUT (MHz)
+25°C
+85°C
–40°C
Figure 47. Modulation Error Ratio, Equalized, 1-Channel 256-QAM,
fDAC = 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
(Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used)
50
48
46
44
42
40
38
36
34
32
30
50
150
250
350
450
550
650
750
850
950
fOUT (MHz)
+25°C
+85°C
–40°C
Figure 48. Modulation Error Ratio, Unequalized, 1-Channel 256-QAM,
fDAC = 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
CENTER 852.00MHz
RES BW 30kHz
VBW 300kHz
SPAN 18MHz
SWEEP 58.4ms (601 PTS)
ATTEN 2dB
REF –35.96dBm
FREQ.
LOWER
UPPER
OFFSET
REF BW
dBc
dBm
dBc
dBm
CARRIER POWER
–23.20dBm/
6.00000MHz
RMS RESULTS
3.375MHz 750.0kHz
–11.20 –34.40
–74.44 –97.64
6.375MHz 5.250MHz –0.77
–23.96
–69.07 –92.26
Figure 49. Zoomed 4-Channel QAM ACLR, fOUT = 840 MHz, Temperature =
25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 4
50
48
46
44
42
40
38
36
34
32
30
50
150
250
350
450
550
650
750
850
950
fOUT (MHz)
+25°C
+85°C
–40°C
Figure 50. Modulation Error Ratio, Equalized, 4-Channel 256-QAM,
fDAC = 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20
(Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used)
50
48
46
44
42
40
38
36
34
32
30
50
150
250
350
450
550
650
750
850
950
fOUT (MHz)
+25°C
+85°C
–40°C
Figure 51. Modulation Error Ratio, Unequalized, 4-Channel 256-QAM,
fDAC = 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20



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