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Fabricante

TC9400COD

VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS

TelCom Semiconductor Inc => Microchip 

1 TC9400

TC9401

TC9402

VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS

FEATURES

GENERAL DESCRIPTION

2

Voltage-to-Frequency

s Choice of Guaranteed Linearity:

TC9401 ......................................................... 0.01%

TC9400 ......................................................... 0.05%

TC9402 ......................................................... 0.25%

s DC to 100 kHz (F/V) or 1Hz to 100kHz (V/F)

s Low Power Dissipation .......................... 27mW Typ

s Single/Dual Supply Operation .................................

+ 8V to + 15V or ± 4V to ± 7.5V

s Gain Temperature Stability .......... ± 25 ppm/°C Typ

s Programmable Scale Factor

The TC9400/TC9401/TC9402 are low-cost voltage-to-

frequency (V/F) converters utilizing low power CMOS

technology. The converters accept a variable analog input

signal and generate an output pulse train whose frequency

is linearly proportional to the input voltage.

3 The devices can also be used as highly-accurate fre-

quency-to-voltage (F/V) converters, accepting virtually any

input frequency waveform and providing a linearly-propor-

tional voltage output.

A complete V/F or F/V system only requires the addition

of two capacitors, three resistors, and reference voltage.

Frequency-to-Voltage

s Operation ........................................... DC to 100 kHz

s Choice of Guaranteed Linearity:

TC9401 ......................................................... 0.02%

TC9400 ......................................................... 0.05%

TC9402 ......................................................... 0.25%

s Programmable Scale Factor

APPLICATIONS

s µP Data Acquisition

s 13-Bit Analog-to-Digital Converters

s Analog Data Transmission and Recording

s Phase-Locked Loops

s Frequency Meters/Tachometer

s Motor Control

s FM Demodulation

FUNCTIONAL BLOCK DIAGRAM

ORDERING INFORMATION

Part No.

Linearity

(V/F) Package

4 Temperature

Range

TC9400COD 0.05%

TC9400CPD 0.05%

TC9400EJD 0.05%

TC9401CPD 0.01%

TC9401EJD 0.01%

TC9402CPD 0.25%

TC9402EJD 0.25%

14-Pin

0°C to +70°C

SOIC (Narrow)

14-Pin

0°C to +70°C

Plastic DIP

14-Pin

– 40°C to +85°C

CerDIP

14-Pin

5 0°C to +70°C

Plastic DIP

14-Pin

– 40°C to +85°C

CerDIP

14-Pin

0°C to +70°C

Plastic DIP

14-Pin

CerDIP

– 40°C to +85°C

6

Integrator

Capacitor

Input

Voltage

RIN

IIN

Reference

Capacitor

Integrator

OpAmp

Threshold

Detector

TC9400

One

Shot

÷2

Pulse Output

Pulse/2 Output

7

IREF

Reference

Voltage

TELCOM SEMICONDUCTOR, INC.

8

TC9400/1/2-5 11/6/96

3-287

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