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932S421BFLFT Datenblatt(PDF) 7 Page - Integrated Device Technology |
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932S421BFLFT Datenblatt(HTML) 7 Page - Integrated Device Technology |
7 / 23 page IDTTM PCIe Gen2 and QPI Clock for Intel-Based Servers 1340G—01/26/10 ICS932S421B PCIe Gen2 and QPI Clock for Intel-Based Servers 7 Electrical Characteristics - CPU 0.7V Current Mode Differential Pair PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS NOTES Current Source Output Impedance Zo VO = Vx 3000 Ω 1 Voltage HighVHigh 660 850 mV 1,3 Voltage Low VLow -150 150 mV 1,3 Max VoltageVovs 1150 mV 1 Min VoltageVuds -300 mV 1 Crossing Voltage (abs) Vx(abs) 250 550 mV 1 Crossing Voltage (var) d-Vx Variation of crossing over all edges 140 mV 1 Rise Time tr VOL = 0.175V, VOH = 0.525V 175 525 ps 1 Fall Time tf VOL = 0.175V, VOH = 0.525V 175 525 ps 1 Rise Time Variation d-tr VOL = 0.175V, VOH = 0.525V 125 ps 1 Fall Time Variation d-tf VOL = 0.175V, VOH = 0.525V 125 ps 1 Duty Cycle dt3 Measurement from differential waveform 45 55 % 1 Skew tsk3 across all CPU outputs, VT = 50% 50 ps 1 Jitter, Cycle to cycle t jcyc-cyc Measurement from differential waveform 50 ps 1 *TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2Ω, RP=49.9Ω , ΙREF = 475Ω 1Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz 3I REF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω. Statistical measurement on single ended signal Measurement on single ended signal using absolute value. Electrical Characteristics - SRC 0.7V Current Mode Differential Pair PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS Notes Current Source Output Impedance Zo VO = Vx 3000 Ω 1 Voltage HighVHigh 660 850 mV 1,3 Voltage Low VLow -150 150 mV 1,3 Max Voltage Vovs 1150 mV 1 Min Voltage Vuds -300 mV 1 Crossing Voltage (abs) Vx(abs) 250 550 mV 1 Crossing Voltage (var) d-Vx Variation of crossing over all edges 140 mV 1 Rise Time tr VOL = 0.175V, VOH = 0.525V 175 525 ps1 Fall Time tf VOH = 0.525V VOL = 0.175V 175 525 ps1 Rise Time Variation d-tr VOL = 0.175V, VOH = 0.525V 125 ps1 Fall Time Variation d-tf VOH = 0.525V VOL = 0.175V 125 ps1 Duty Cycle dt3 Measurement from differential waveform 45 55 % 1 Skew tsk3 VT = 50% 250 ps1 Jitter, Cycle to cycle t jcyc-cyc Measurement from differential waveform 125 ps 1 *TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2 Ω, RP=49.9Ω, ΙREF = 475Ω 1Guaranteed by design and characterization, not 100% tested in production. 2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz 3I REF = VDD/(3xRR). For RR = 475 Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω. Statistical measurement on single ended signal Measurement on single ended signal using absolute value. |
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