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AD9520-1/PCBZ датащи(PDF) 5 Page - Analog Devices |
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AD9520-1/PCBZ датащи(HTML) 5 Page - Analog Devices |
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5 / 80 page ![]() Data Sheet AD9520-1 Rev. B | Page 5 of 80 Parameter Min Typ Max Unit Test Conditions/Comments Pulse Width High/Low 1.8 ns The amount of time that a square wave is high/low; determines the allowable input duty cycle Crystal Oscillator Crystal Resonator Frequency Range 16.62 33.33 MHz Maximum Crystal Motional Resistance 30 Ω PHASE/FREQUENCY DETECTOR (PFD) PFD Input Frequency 100 MHz Antibacklash pulse width = 1.3 ns 45 MHz Antibacklash pulse width = 2.9 ns Reference Input Clock Doubler Frequency 0.004 50 MHz Antibacklash Pulse Width 1.3 ns Register 0x017[1:0] = 01b 2.9 ns Register 0x017[1:0] = 00b; Register 0x017[1:0] = 11b 6.0 ns Register 0x017[1:0] = 10b CHARGE PUMP (CP) CPV is the CP pin voltage; VCP is the charge pump power supply voltage (VCP pin) ICP Sink/Source Programmable High Value 4.8 mA With CPRSET = 5.1 kΩ; higher ICP is possible by changing CPRSET Low Value 0.60 mA With CPRSET = 5.1 kΩ; lower ICP is possible by changing CPRSET Absolute Accuracy 2.5 % CPV = VCP/2 CPRSET Range 2.7 10 kΩ ICP High Impedance Mode Leakage 1 nA Sink-and-Source Current Matching 1 % 0.5 V < CPV < VCP − 0.5 V; CPVis the CP pin voltage; VCP is the charge pump power supply voltage (VCP pin) ICP vs. VCP 1.5 % 0.5 V < CPV < VCP − 0.5 V ICP vs. Temperature 2 % CPV = VCP/2 PRESCALER (PART OF N DIVIDER) Prescaler Input Frequency P = 1 FD 300 MHz P = 2 FD 600 MHz P = 3 FD 900 MHz P = 2 DM (2/3) 200 MHz P = 4 DM (4/5) 1000 MHz P = 8 DM (8/9) 2400 MHz P = 16 DM (16/17) 3000 MHz P = 32 DM (32/33) 3000 MHz Prescaler Output Frequency 300 MHz A, B counter input frequency (prescaler input frequency divided by P) PLL N DIVIDER DELAY Register 0x019[2:0]; see Table 54 000 Off 001 385 ps 010 486 ps 011 623 ps 100 730 ps 101 852 ps 110 976 ps 111 1101 ps PLL R DIVIDER DELAY Register 0x019[5:3]; see Table 54 000 Off 001 365 ps 010 486 ps 011 608 ps 100 730 ps 101 852 ps 110 976 ps 111 1101 ps |
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