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CD-700-LAF-GFB-77.760 数据表(PDF) 8 Page - Vectron International, Inc |
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CD-700-LAF-GFB-77.760 数据表(HTML) 8 Page - Vectron International, Inc |
8 / 14 page CD-700, VCXO Based PLL Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Tel: 1-88-VECTRON-1 • Web: www.vectron.com Page 8 of 14 Rev : 06Apr08 Figure 7. SPICE Model *****CD-700 ac Loop model vi 1 0 ac 1 ri 1 0 1k *****Phase Detector e1 2 0 1 0 1 (for closed loop response use: e1 2 0 1 12 1) r2 2 3 30k c1 3 0 60p *****Phase Detector Gain=0.53 x Data Density (Data Density = 1 for clocks) for 5 volt operation and = 0.35 x Data Density for 3.3 volt operation e2 4 0 3 0 .35 *****Loop filter r1 4 5 60k c2 5 0 10p rf 5 6 90k cf 6 7 1.0u e3 7 0 5 0 –10000 ***** VCXO, Input Bandwidth=50kHz r5 7 8 160k c4 8 0 20p *****VCXO Gain x 2 ∏ (Example: 19.440 MHz x 100 ppm x 2 x ∏) e4 9 0 8 0 12214 *****1/S model r6 9 10 1000 c5 10 11 0.001u e5 11 0 10 0 –1e 6 ****Divide by n e6 12 0 11 0 1 r7 12 0 1k The bold numbers are user selectable R and C values that will vary depending on the application (see Figure 11). Vi Ri E1 R2 C1 E2 R1 C2 Rf Cf E3 R5 C4 E4 R6 C5 E5 E6 R7 1 2 3 4 5 6 7 8 9 10 11 12 |
类似零件编号 - CD-700-LAF-GFB-77.760 |
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类似说明 - CD-700-LAF-GFB-77.760 |
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