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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HA7210IP датащи(PDF) 12 Page - Intersil Corporation |
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HA7210IP датащи(HTML) 12 Page - Intersil Corporation |
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12 / 15 page  12 FIGURE 35. TRANSCONDUCTANCE vs FREQUENCY FIGURE 36. TRANSCONDUCTANCE vs FREQUENCY FIGURE 37. TRANSCONDUCTANCE vs FREQUENCY FIGURE 38. TRANSCONDUCTANCE vs FREQUENCY NOTE: Figure 39 (Duty Cycle vs RS at 32kHz) should only be used for 32kHz crystals. RS may be used at other frequencies to adjust Duty Cycle but experimentation will be required to find an appropriate value. The RS value will be proportional to the effective series resistance of the crystal being used. FIGURE 39. DUTY CYCLE vs RS at 32kHz Typical Performance Curves (Continued) NOTE: Refer to Test Circuit (Figure 1). 580 540 500 460 420 380 340 300 260 10K 100K 1M 10M 140 150 160 170 180 FREQUENCY (Hz) VDD = 5V, VSS = GND 436.5 µA/V 23 1000pF 1 µF HA7210 100 Ω 50 Ω 178o 620 F1 = 0, F2 = 0 460 420 380 340 300 260 10K 100K 1M 10M 140 150 160 170 180 FREQUENCY (Hz) 130 VDD = 5V, VSS = GND 311.6 µA/V 23 1000pF 1 µF HA7210 100 Ω 50 Ω 500 177o F1 = 0, F2 = 1 220 200 180 160 140 120 100 10K 100K 1M 10M 140 150 160 170 180 FREQUENCY (Hz) 130 240 VDD = 5V, VSS = GND 156.7 µA/V 176.6o 23 1000pF 1 µF HA7210 100 Ω 50 Ω F1 = 1, F2 = 0 15 10 5 0 10K 100K 1M 140 150 160 170 180 FREQUENCY (Hz) 130 120 110 20 VDD = 5V, VSS = GND 6.56 µA/V 23 1000pF 1 µF HA7210 100 Ω 50 Ω 166o F1 = 1, F2 = 1 0 20 40 60 80 100 120 35 40 45 50 55 60 F1 = F2 = 1, VDD = 5V, CL = 18pF, TA = 25 oC, f OSC = 32.768kHz RS (kΩ) NDK PART # MX-38 EPSON PART # C-001R32.768K-A HA7210 XTAL 2 OSC IN 3 OSC OUT RS HA7210 |
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