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AD9525/PCBZ 数据表(PDF) 10 Page - Analog Devices |
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AD9525/PCBZ 数据表(HTML) 10 Page - Analog Devices |
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10 / 48 page ![]() AD9525 Data Sheet Rev. 0 | Page 10 of 48 Parameter Min Typ Max Unit Test Conditions/Comments CLK = 1474.56 MHz, FOUT = 1474.56 MHz Divider = 1 At 10 Hz Offset −114 dBc/Hz At 100 Hz Offset −125 dBc/Hz At 1 kHz Offset −134 dBc/Hz At 10 kHz Offset −144 dBc/Hz At 100 kHz Offset −149 dBc/Hz At 800 kHz Offset −151 dBc/Hz At 1 MHz Offset −151 dBc/Hz At 10 MHz Offset −154 dBc/Hz CLK = 122.88 MHz, FOUT = 122.88 MHz Divider = 1 At 10 Hz Offset −134 dBc/Hz At 100 Hz Offset −145 dBc/Hz At 1 kHz Offset −153 dBc/Hz At 10 kHz Offset −159 dBc/Hz At 100 kHz Offset −161 dBc/Hz At 800 kHz Offset −161 dBc/Hz At 1 MHz Offset −161 dBc/Hz At 10 MHz Offset −161 dBc/Hz PD, RESET, AND REF_SEL PINS Table 17. Parameter Min Typ Max Unit Test Conditions/Comments INPUT CHARACTERISTICS Logic 1 Voltage 2.0 V Logic 0 Voltage 0.8 V Logic 1 Current 1 µA Logic 0 Current PD, RESET −112 µA The minus sign indicates that current is flowing out of the AD9525, which is due to the internal pull-up resistor Logic 0 Current REF_SEL 1 µA Capacitance 2 pF RESET TIMING Pulse Width Low 50 ns RESET Inactive to Start of Register Programming 100 ns STATUS AND REF_MON PINS Table 18. Parameter Min Typ Max Unit Test Conditions/Comments OUTPUT CHARACTERISTICS 1 mA output load Output Voltage High, VOH 2.7 V Output Voltage Low, VOL 0.4 V MAXIMUM TOGGLE RATE 200 MHz Applies when mux is set to any divider or counter output or PFD up/down pulse; usually debug mode only; beware that spurs can couple to output when any of these pins is toggling |
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