AD9857SLASHPCB datasheet(6/31 Pages) AD

tên linh kiện	AD9857/PCB

Giải thích chi tiết về linh kiện	CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter

PDF	31 Pages

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nhà sản xuất	AD [Analog Devices]

Trang chủ	http://www.analog.com

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AD9857

–6–

REV. 0

Typical Modulated Output Spectral Plots

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

START 0Hz

5MHz/

STOP 50MHz

Figure 1. QPSK at 42 MHz and 5.12 MS/s; 10.24 MHz

External Clock with REFCLK Multiplier = 12, CIC Interpolation

Rate = 3, 4

Oversampled Data

START 0Hz

4MHz/

STOP 40MHz

–8

–16

–24

–32

–40

–48

–56

–64

–72

–80

Figure 2. 64-QAM at 28 MHz and 6 MS/s; 36 MHz External

Clock with REFCLK Multiplier = 4, CIC Interpolation Rate =

2, 3

Oversampled Data

START 0Hz

8MHz/

STOP 80MHz

–10

–20

–30

–40

–50

–6

–7

–8

–90

–100

Figure 3. 16-QAM at 65 MHz and 2.56 MS/s; 10.24 MHz

External Clock with REFCLK Multiplier = 18, CIC Interpolation

Rate = 9, 4

Oversampled Data

START 0Hz

5MHz/

STOP 50MHz

–8

–16

–24

–32

–40

–48

–56

–64

–72

–80

Figure 4. 256-QAM at 38 MHz and 6 MS/s; 48 MHz External

Clock with REFCLK Multiplier = 4, CIC Interpolation Rate =

2, 4

Oversampled Data

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