CS4121EDWF20 데이터 시트보기 (PDF) - ON Semiconductor

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CS4121EDWF20

Low Voltage Precision Air-Core Tach/Speedo Driver

ON Semiconductor 

CS4121

R3

Speedo Input

3.0 kW

CCP

0.0033 mF

± 30 PPM/°C

R2

R4

1.0 kW

10 kW C3 0.1 mF

1 CP+

CP−

SQOUT F/VOUT

FREQIN VREG

GND

GND

C4 +

GND

GND

COS+ SINE+

Battery

R1

D1

3.9,

1.0 A 500 mW

600 PIV

GND

0.1 mF

D2

C1

50 V,

500 mW

Zener

COS−

VCC

COSINE

SINE−

BIAS

SINE

0.47 mF

Air Core

Gauge

200 W

Speedometer

Trim Resistor

RT ± 20 PPM/°C

243 kW

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.

Figure 9. Speedometer or Tachometer Application

http://onsemi.com

9

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