CS8191 datasheet(9/12 Pages) ONSEMI

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CS8191

http://onsemi.com

CS8441

Odometer

Air Core

Stepper Motor

200

Ω

Figure 10. Speedometer With Odometer or Tachometer Application

COSINE

SINE

Air Core

Gauge

Speedometer

VCC

F/VOUT

VREG

CP+

CP–

GND

COS+

SINE+

SQOUT

BIAS

GND

COS–

SINE–

FREQIN

Notes:

1. The product of C4and RT have a direct effect on gain and therefore directly

affect temperature compensation.

2. C4 Range; 20 pF to 0.2

µF.

3. R4 Range; 100 k

Ω to 500 kΩ.

4. The IC must be protected from transients above 60 V and reverse battery conditions.

5. Additional filtering on the FREQIN lead may be required.

6. Gauge coil connections to the IC must be kept as short as possible (

≤ 3.0 inch)

for best pointer stability.

Battery

GND

Typical Speedometer

Input

0.1

µF

3.9,

500 mW

50 V,

500 mW Zener

1.0 A,

600 PIV

10 k

Ω

0.1

µF

0.47

µF

1.0 k

Ω

CCP

0.0033

µF,

+/–30 PPM/

°C

3.0 k

Ω

Trim Resistor,

+/–20 PPM/

°C

µF

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