Features

Regulator

+Ð

V

Z

C

Gnd

V

SINE

C

Pwr Gnd

V

COS

S

F/V OUT

V

CC

V

REG

S

Function

Generator

Charge

Pump

s

Single Supply Operation

s

On-Chip Regulation

s

20mA Output Drive

Capability

Package Options

20L SOIC Wide

(internally fused leads)

14L PDIP

20mA Air-Core Tachometer Drive Circuit

1

Gnd

NC

Gnd

Gnd

Gnd

Gnd

Gnd

Gnd

Gnd

1

Gnd

NC

Pwr Gnd

CS289

Description

The CS289 is specifically designed

for use with air-core meter move-

ments. The IC has charge pump cir-

cuitry for frequency-to-voltage con-

version, a shunt regulator for stable

operation, a function generator, and

sine and cosine amplifiers. The

buffered sine and cosine outputs

will typically sink or source 20mA.

Block Diagram

Absolute Maximum Ratings

Operating Temperature ............................................................Ð40¡C to +100¡C

Junction Temperature..................................................................Ð40¡C to 150¡C

Storage Temperature.................................................................Ð65¡C to +150¡C

Lead Temperature Soldering

Wave Solder (through hole styles only)...........10 sec. max, 260¡C peak

Reflow (SMD styles only)............60 sec. max above 183¡C, 230¡C peak

1

Rev. 3/8/99

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

A

Company

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