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BU2365FV Arkusz danych(PDF) 3 Page - Rohm |
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BU2365FV Arkusz danych(HTML) 3 Page - Rohm |
3 / 17 page 3/16 ※ 1 Period-Jitter 1σ This parameter represents standard deviation (=1σ) on cycle distribution data at the time when the output clock cycles are sampled 1000 times consecutively with the TDS7104 Digital Phosphor Oscilloscope of Tektronix Japan, Ltd. ※ 2 Period-Jitter MIN-MAX This parameter represents a maximum distribution width on cycle distribution data at the time when the output clock cycles are sampled 1000 times consecutively with the TDS7104 Digital Phosphor Oscilloscope of Tektronix Japan, Ltd. ※ 3 Output Lock-Time This parameter represents elapsed time after power supply turns ON to reach a voltage of 3.0 V, after the system is switched from Power-Down state to normal operation state, or after the output frequency is switched, until it is stabilized at a specified frequency, respectively. ※ 4 Frequency stability f0 : This parameter means an optimum frequency at T=25℃(27.000000 MHz), which represents a value of a single piece of IC. Since no consideration is given to the stability of the crystal oscillator, it should be separately studied according to the system in use. ※ 5 Frequency sensitivity/Frequency sensitivity linearity These parameters represents that the frequency falls within the area shown in Fig. 2 in the control circuit of control voltage shown in Fig. 1. It shows the value of IC itself. Since no consideration is given to the stability of the crystal oscillator, it should be separately studied according to the system in use. ※ Common – Recommended crystal oscillators The electrical characteristics shown above have been all evaluated with the use of the crystal oscillator NX5032GA (Spec. No. EXS00A-00278) manufactured by NIHON DEMPA KOGYO CO., LTD., under the conditions of Limiting resistance Rd=30Ωand Crystal oscillator load CL=10pF. Consequently, in order to use the BU2365FV, the said crystal oscillator is recommended. Fig.1 Control Circuit of Control Voltage Frequency sensitivity dispersion range: fL = -45±15ppm, fC = 0±15ppm, fH = 45±15ppm However, frequency sensitivity linearity: -10ppm≦(fH - fC) -( fC - fL) ≦+10ppm Fig. 2 Frequency Sensitivity Dispersion Range ※ 6 Buffer skew This parameter is only functional when the BUF_OUT1 and the BUF_OUT2 are driven at the same load capacitance. Δf/f0 Hi-Z L H 0ppm +60ppm - 60ppm +15ppm - 15ppm Vc +30ppm - 30ppm +45ppm - 45ppm fH fC fL R2 Vc BU2365FV R1:R2=1:0.875 R1 R1 10Pin:VCTRL 9Pin:VDD_V Δf/f0 |
Podobny numer części - BU2365FV_08 |
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Podobny opis - BU2365FV_08 |
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