CS4121 Cherry Semiconductor Corporation, CS4121 Datasheet
CS4121
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CS4121 Summary of contents
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... The device is also more precise than existing devices allow- ing for fewer trims and for use in a speedometer. The CS4121 is compatible with the CS8190, and provides higher accu- racy at a lower supply voltage (8.0V min. as opposed to 8.5V func- tionally operational to 6.5V. ...
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Electrical Characteristics: -40¡C ² T PARAMETER Supply Voltage Section I Supply Current Normal Operation Range CC Input Comparator Section Positive Input Threshold Input Hysteresis Input Bias Current * 0V ² V Input Frequency Range Input Voltage Range ...
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PARAMETER Function Generator Section: continued Function Generator Error 13.1V ² V Function Generator Error 13.1V ² V Function Generator Error 13.1V ² V Function Generator Error 25¡C ² T Function Generator Error 25¡C ² T Function Generator Error Ð40¡C ² ...
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Figure 3: Output Angle in Polar Form SINE+ SINE- Ð Ð SIN+ SIN ARCTAN V Ð V -7V COS+ COS- Nominal Angle vs. Ideal Angle (After calibrating at ...
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... C4 is selected to satisfy both the maximum allowable rip- ´ (V Ð 0.7V) T REG ple voltage and response time of the meter movement. ´ With C4 = 0.47µF, the F/V ripple voltage is 44mV. Figure 7 shows how the CS4121 and the CS-8441 are used to produce a Speedometer and Odometer circuit. 5 and ´ Æ GEN F ´ ...
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Circuit Description and Application Notes: continued FREQ IN 2.0V Figure 5A: Partial Schematic of Input and Charge Pump 0 FREQ IN SQ OUT 0 I CP+ V CP+ 0 Figure 5B: Timing Diagram of FREQ and REG ...
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Speedometer/Odometer or Tachometer Application Speedo Input Battery D1 R1 Gnd Figure 3.9, 500mW R2 - 10k½ 3k½ 1k½ Trim Resistor +/- 20 PPM/¡C 243k½ 0.1µ 0.1µF ...
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... REF: JEDEC MS-001 1.27 (.050) 0.40 (.016) REF: JEDEC MS-013 Ordering Information Part Number Description CS4121ENF16 16L PDIP (internally fused leads) CS4121EDWF20 20L SOIC (internally fused leads) CS4121EDWFR20 20L SOIC (internally fused leads) (tape & reel) Rev. 12/4/96 Package Specification D Thermal Data English R QJC Min ...