CA3098E Intersil Corporation, CA3098E Datasheet

CA3098E

Manufacturer Part Number

CA3098E

Description

Programmable schmitt trigger with memory, dual input precision level detector

Manufacturer

Intersil Corporation

Datasheet

1.CA3098E.pdf (12 pages)

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Programmable Schmitt Trigger with

Memory, Dual Input Precision Level

Detector

The CA3098 Programmable Schmitt Trigger is a monolithic

silicon integrated circuit designed to control high operating

current loads such as thyristors, lamps, relays, etc. The

CA3098 can be operated with either a single power supply

with maximum operating voltage of 16V, or a dual power

supply with maximum operating voltage of ±8V. It can

directly control currents up to 150mA and operates with

microwatt standby power dissipation when the current to be

controlled is less than 30mA. The CA3098 contains the

following major circuit function features (see Block Diagram):

Pinout

1. Differential amplifiers and summer: the circuit uses two

2. Flip-flop: the flip-flop functions as a bistable “memory”

3. Driver and output stages: these stages permit the circuit

4. Programmable operating current: the circuit incorporates

differential amplifiers, one to compare the input voltage

with the “high” reference, and the other to compare the

input with the “low” reference. The resultant output of the

differential amplifiers actuates a summer circuit which

delivers a trigger that initiates a change in state of a flip-

flop.

element that changes state in response to each trigger

command.

to “sink” maximum peak load currents up to 150mA at

terminal 3.

access at terminal 2 to permit programming the desired

quiescent operating current and performance parameters.

LOW REF.

BIAS

OUT

V-

TOP VIEW

CA3098

(PDIP)

+IN

HIGH REF.

V+

CURRENT

CONTROL

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Features

• Programmable Operating Current

• Micropower Standby Dissipation

• Direct Control of Currents Up to . . . . . . . . . . . . . . . 150mA

• Low Input On/Off Current of Less Than 1nA for

• Built-in Hysteresis . . . . . . . . . . . . . . . . . . . . . 20mV (Max)

Applications

• Control of Relays, Heaters, LEDs, Lamps, Photosensitive

• Signal Reconditioning

• Phase and Frequency Modulators

• On/Off Motor Switching

• Schmitt Triggers, Level Detectors

• Time Delays

• Overvoltage, Overcurrent, Overtemperature Protection

• Battery-Operated Equipment

• Square and Triangular-Wave Generators

Part Number Information

CA3098E

Programmable Bias Current of 1µA

Devices, Thyristors, Solenoids, etc.

NUMBER

PART

January 1999

RANGE (

Intersil (and design) is a trademark of Intersil Americas Inc.

-55 to 125

TEMP

8 Ld PDIP

File Number

PACKAGE

CA3098

E8.3

PKG. NO.

896.5

Related parts for CA3098E

CA3098E Summary of contents

Page 1

... Phase and Frequency Modulators • On/Off Motor Switching • Schmitt Triggers, Level Detectors • Time Delays • Overvoltage, Overcurrent, Overtemperature Protection • Battery-Operated Equipment • Square and Triangular-Wave Generators Part Number Information PART NUMBER CA3098E 8 +IN 7 HIGH REF CURRENT CONTROL CAUTION: These devices are sensitive to electrostatic discharge ...

Page 2

Block Diagram “HIGH” REF. (HR) 7 SIGNAL INPUT 8 “LOW” REF. (LR) 1 Schematic Diagram “HIGH” REF. (HR SIGNAL INPUT “LOW” REF. ...

Page 3

Absolute Maximum Ratings Supply Voltage Between V+ and .16V Voltage Between High Reference or Sink Output and ...

Page 4

General Description of Circuit Operation When the signal input voltage of the CA3098 is equal to or less than the “low” reference voltage (LR), current flows from an external power supply through a load connected to Terminal 3 (“sink” output). ...

Page 5

Test Circuits +6V I BIAS CA3098 -6V FIGURE 2. INPUT OFFSET VOLTAGE TEST CIRCUIT V+ I BIAS CA3098 REG ...

Page 6

Typical Performance Curves - +12V 6V (LR PROGRAMMING BIAS CURRENT ...

Page 7

Typical Performance Curves 1 100µA A BIAS V+ = 12V 1.2 1.0 0.8 0.6 0.4 0 100 OUTPUT SINK CURRENT (mA) FIGURE 11. OUTPUT SATURATION VOLTAGE vs OUTPUT SINK CURRENT 10,000 ...

Page 8

Typical Performance Curves 100µA BIAS V+/ REG 7000 6500 5 10 POSITIVE SUPPLY VOLTAGE (V) FIGURE 17. STORAGE TIME vs SUPPLY VOLTAGE o T ...

Page 9

Typical Performance Curves 1100 SUPPLY VOLTAGE = 100µA BIAS 2.5V 1000 LR HR REG 900 800 700 600 -40 - TEMPERATURE ( FIGURE 23. DELAY TIME vs AMBIENT ...

Page 10

Typical Applications +6V τ ln2 1N914 12kΩ CA3098 8 2 60kΩ FIGURE 28. TIME DELAY CIRCUIT: TERMINAL 3 “SINKS” τ AFTER SECONDS FIGURE 30. SINE WAVE TO SQUARE WAVE CONVERTER ...

Page 11

Typical Applications (Continued 100kΩ 100kΩ 6 120V AC 60Hz CA3098 100kΩ R SENSOR 2 1 100kΩ (e.g., 100kΩ FIGURE 32. OFF/ON CONTROL OF TRIAC WITH PROGRAMMABLE HYSTERESIS 11 CA3098 ...

Page 12

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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