TC9402EJD Просмотр технического описания (PDF) - TelCom Semiconductor Inc => Microchip

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производитель

TC9402EJD

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

TelCom Semiconductor Inc => Microchip 

TC9400

TC9401

TC9402

VOLTAGE-TO-FREQUENCY/

FREQUENCY-TO-VOLTAGE CONVERTERS

PIN CONFIGURATIONS

14-Pin Plastic DIP/CerDIP

IBIAS 1

ZERO ADJ 2

IIN 3

VSS 4

VREF OUT 5

GND 6

VREF 7

TC9400

TC9401

TC9402

14 VDD

13 NC

12 AMPLIFIER OUT

11 THRESHOLD DETECTOR

10 FREQ/2 OUT

9 OUTPUT COMMON

8 PULSE FREQ OUT

14-Pin SOIC (Narrow)

IBIAS 1

14 VDD

ZERO ADJ 2

13 NC

IIN 3

VSS 4

VREF OUT 5

TC9400

TC9401

TC9402

12 AMPLIFIER OUT

11 THRESHOLD DETECTOR

10 FREQ/2 OUT

GND 6

VREF 7

9 OUTPUT COMMON

8 PULSE FREQ OUT

NC = NO INTERNAL CONNECTION

PIN DESCRIPTIONS

Pin No.

Symbol

1

IBIAS

2

Zero Adj

3

IIN

4

VSS

5

VREFOUT

6

GND

7

VREF

8

Pulse Freq Out

9

Output Common

10

Freq/2 Out

11 Threshold Detect

12

Amplifier Out

13

NC

14

VDD

Description

This pin sets bias current in the TC9400. Connect to VSS through a 100 kΩ resistor.

See text.

Low frequency adjustment input. See text.

Input current connection for the V/F converter.

Negative power supply voltage connection, typically – 5V.

Reference capacitor connection.

Analog ground.

Voltage reference input, typically – 5V.

Frequency output. This open drain output will pulse LOW each time the Freq

threshold detector limit is reached. The pulse rate is proportional to input voltage.

Source connection for the open drain output FETs. See text.

This open drain output is a square wave at one half the frequency of the pulse

output (pin 8). Output transitions of this pin occur on the rising edge of pin 8.

Input to the threshold detector. This pin is the frequency input during F/V operation.

Output of the integrator amplifier.

No internal connection

Positive power supply connection, typically +5V.

3-290

TELCOM SEMICONDUCTOR, INC.

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