© Semiconductor Components Industries, LLC, 2001

March, 2001 – Rev. 4

1

Publication Order Number:

CS8191/D

CS8191

Precision Air-Core

Tach/Speedo Driver with

Short Circuit Protection

The CS8191 is specifically designed for use with 4 quadrant

air–core meter movements. The IC includes an input comparator for

sensing input frequency such as vehicle speed or engine RPM, a

charge pump for frequency to voltage conversion, a bandgap reference

for stable operation and a function generator with sine and cosine

amplifiers that differentially drive the meter coils.

The CS8191 has a higher torque output and better output signal

symmetry than other competitive parts (CS289, and LM1819). It is

protected against short circuit and overvoltage (60 V) fault conditions.

Enhanced circuitry permits functional operation down to 8.0 V.

Features

CC

– Overvoltage

– Short Circuit

– Low Voltage Operation

http://onsemi.com

Device

Package

Shipping

ORDERING INFORMATION

CS8191XNF16

DIP–16

25 Units/Rail

CS8191XDWF20

SO–20L

37 Units/Rail

CS8191XDWFR20

SO–20L

1000 Tape & Reel

DIP–16

NF SUFFIX

CASE 648

16

1

SINE+

SINE–

COS+

COS–

GND

GND

GND

GND

CP–

BIAS

CP+

PIN CONNECTIONS AND

MARKING DIAGRAM

1

16

SO–20L

DWF SUFFIX

CASE 751D

1

20

COS+

COS–

NC

NC

GND

GND

GND

GND

NC

NC

CP–

BIAS

CP+

SIN+

SIN–

1

20

DIP–16

SO–20L

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W

= Work Week