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CS4121EDWF20 Datasheet(PDF) 9 Page - ON Semiconductor |
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CS4121EDWF20 Datasheet(HTML) 9 Page - ON Semiconductor |
9 / 12 page CS4121 http://onsemi.com 9 R3 R4 R2 C3 C1 D2 R1 D1 GND COSINE SINE C4 CCP RT + Speedo Input Battery Air Core Gauge 200 W CP+ CP− SQOUT F/VOUT VREG GND GND SINE+ SINE− BIAS FREQIN GND GND COS+ COS− VCC 1 Speedometer Trim Resistor ± 20 PPM/°C 243 k W 0.1 mF 1.0 A 600 PIV Figure 9. Speedometer or Tachometer Application 3.9, 500 mW 10 k W 3.0 k W 1.0 k W 0.0033 mF 0.47 mF 0.1 mF 50 V, 500 mW Zener ± 30 PPM/°C Notes: 1. For 58% Speed Input TMAX ≤ 5.0/fMAX where TMAX = CCP (R3 + R4) fMAX = maximum speed input frequency 2. The product of C4 and RT have a direct effect on gain and therefore directly affect temperature compensation. 3. CCP Range; 20 pF to 0.2 mF. 4. RT Range; 100 kW to 500 kW. 5. The Ic must be protected from transients above 60 V and reverse battery conditions. 6. Additional filtering on FREQIN lead may be required. 7. Gauge coil connections to the IC must be kept as short as possible ( ≤ 3.0 inch) for best pointer stability. |
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