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TLC2932PW Datasheet(PDF) 6 Page - Texas Instruments |
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TLC2932PW Datasheet(HTML) 6 Page - Texas Instruments |
6 / 24 page TLC2932 HIGH-PERFORMANCE PHASE-LOCKED LOOP SLAS097E – SEPTEMBER 1994 – REVISED MAY 1997 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 operating characteristics over recommended operating free-air temperature range, VDD = 3 V (unless otherwise noted) VCO section PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fosc Operating oscillation frequency RBIAS = 3.3 kΩ, VCO IN = 1/2 VDD 15 19 23 MHz ts(fosc) Time to stable oscillation (see Note 8) Measured from VCO INHIBIT ↓ 10 µs t Rise time CL = 15 pF, See Figure 3 7 14 ns tr Rise time CL = 50 pF, See Figure 3 14 ns tf Fall time CL = 15 pF, See Figure 3 6 12 ns tf Fall time CL = 50 pF, See Figure 3 10 ns Duty cycle at VCO OUT RBIAS = 3.3 kΩ, VCO IN = 1/2 VDD, 45% 50% 55% α(fosc) Temperature coefficient of oscillation frequency RBIAS = 3.3 kΩ, VCO IN = 1/2 VDD, TA = –20°C to 75°C 0.04 %/ °C kSVS(fosc) Supply voltage coefficient of oscillation frequency RBIAS = 3.3 kΩ, VCO IN = 1.5 V, VDD = 2.85 V to 3.15 V 0.02 %/mV Jitter absolute (see Note 9) RBIAS = 3.3 kΩ 100 ps NOTES: 8. The time period to the stable VCO oscillation frequency after the VCO INHIBIT terminal is changed to a low level. 9. The low-pass-filter (LPF) circuit is shown in Figure 28 with calculated values listed in Table 7. Jitter performance is highly dependent on circuit layout and external device characteristics. The jitter specification was made with a carefully designed PCB with no device socket. PFD section PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fmax Maximum operating frequency 20 MHz tPLZ PFD output disable time from low level 21 50 ns tPHZ PFD output disable time from high level See Figures 4 and 5 and Table 4 23 50 ns tPZL PFD output enable time to low level See Figures 4 and 5 and Table 4 11 30 ns tPZH PFD output enable time to high level 10 30 ns tr Rise time CL =15 pF See Figure 4 2.3 10 ns tf Fall time CL = 15 pF, See Figure 4 2.1 10 ns |
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