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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ICS954119 датащи(PDF) 15 Page - Integrated Circuit Systems |
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ICS954119 датащи(HTML) 15 Page - Integrated Circuit Systems |
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15 / 17 page  15 Integrated Circuit Systems, Inc. ICS954119 Advance Information 0875—05/24/04 Electrical Characteristics - 48MHz/USB48MHz/24_48MHz PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS NOTES Long Accuracy ppm see Tperiod min-max values -100 100 ppm 1 Clock period T period 48.00MHz output nominal 20.8313 20.8354 ns Output Impedance R DSP V O = VDD*(0.5) 12 55 Ω 1 Output High Voltage V OH I OH = -1 mA 2.4 V 1 Output Low Voltage V OL I OL = 1 mA 0.55 V 1 V OH @MIN = 1.0 V -33 mA 1 V OH@MAX = 3.135 V -33 mA 1 V OL @ MIN = 1.95 V 30 mA 1 V OL @ MAX = 0.4 V 38 mA 1 Edge Rate t slewr/f Rising/Falling edge rate 1 4 V/ns 1 Edge Rate t slewr/f_USB USB48 Rising/Falling edge rate 1 2 V/ns 1 Rise Time t r V OL = 0.4 V, VOH = 2.4 V 0.5 2 ns 1 Fall Time t f V OH = 2.4 V, VOL = 0.4 V 0.5 2 ns 1 Rise Time t r_USB V OL = 0.4 V, VOH = 2.4 V 1 2 ns 1 Fall Time t f_USB V OH = 2.4 V, VOL = 0.4 V 1 2 ns 1 Duty Cycle d t1 V T = 1.5 V 45 55 % 1 Jitter, Cycle to cycle t jcyc-cyc V T = 1.5 V 500 ps 1 *TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 20 pF with Rs = 7 Ω (Rs is used in USB48MHz test only) 1Guaranteed by design and characterization, not 100% tested in production. Output High Current I OH Output Low Current I OL Electrical Characteristics - DOT_96MHz 0.7V Current Mode Differential Pair PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS Notes Current Source Output Impedance Zo V O = Vx 3000 Ω 1 Voltage High VHigh 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-Vcross Variation of crossing over all edges 140 mV 1 Long Accuracy ppm see Tperiod min-max values -100 100 ppm 1,2 Average period Tperiod 96.00MHz nominal 10.4135 10.4198 ns 2 Absolute min period Tabsmin 96.00MHz nominal 10.1635 ns 1,2 Rise Time t r V OL = 0.175V, VOH = 0.525V 175 700 ps 1 Fall Time t f V OH = 0.525V VOL = 0.175V 175 700 ps 1 Rise Time Variation d-t r V OL = 0.175V, VOH = 0.525V 125 ps 1 Fall Time Variation d-t f V OH = 0.525V VOL = 0.175V 125 ps 1 Duty Cycle d t3 Measurement from differential wavefrom 45 55 % 1 Jitter, Cycle to cycle t jcyc-cyc Measurement from differential wavefrom 250 ps 1 *T A = 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 REFOUT 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. Measurement on single ended signal using absolute value. Statistical measurement on single ended signal |
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