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CA3098 Datasheet

  • CA3098

  • Programmable Schmitt Trigger with Memory, Dual Input Precisi...

  • 12頁

  • INTERSIL   INTERSIL

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UCT
NT
ROD ACEME
TM
P
E
LET
7143
EPL
BSO NDED R 21-724-
O
or 3
ME
COM TERSIL
E
NO R -888-IN
1
Call
CA3098
January 1999
File Number
896.5
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
鹵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):
1. Differential amplifiers and summer: the circuit uses two
differential amplifiers, one to compare the input voltage
with the 鈥渉igh鈥?reference, and the other to compare the
input with the 鈥渓ow鈥?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.
2. Flip-flop: the flip-flop functions as a bistable 鈥渕emory鈥?/div>
element that changes state in response to each trigger
command.
3. Driver and output stages: these stages permit the circuit
to 鈥渟ink鈥?maximum peak load currents up to 150mA at
terminal 3.
4. Programmable operating current: the circuit incorporates
access at terminal 2 to permit programming the desired
quiescent operating current and performance parameters.
Features
鈥?Programmable Operating Current
鈥?Micropower Standby Dissipation
鈥?Direct Control of Currents Up to . . . . . . . . . . . . . . . 150mA
鈥?Low Input On/Off Current of Less Than 1nA for
Programmable Bias Current of 1碌A(chǔ)
鈥?Built-in Hysteresis . . . . . . . . . . . . . . . . . . . . . 20mV (Max)
)
ma
itt
ith
,
ut
Applications
鈥?Control of Relays, Heaters, LEDs, Lamps, Photosensitive
Devices, Thyristors, Solenoids, etc.
鈥?Signal Reconditioning
鈥?Phase and Frequency Modulators
鈥?On/Off Motor Switching
鈥?Schmitt Triggers, Level Detectors
鈥?Time Delays
鈥?Overvoltage, Overcurrent, Overtemperature Protection
鈥?Battery-Operated Equipment
鈥?Square and Triangular-Wave Generators
)
()
ds
duc
e,
tor,
Part Number Information
PART
NUMBER
CA3098E
TEMP
RANGE (
o
C)
-55 to 125
PACKAGE
8 Ld PDIP
PKG. NO.
E8.3
t
ent,
Pinout
CA3098
(PDIP)
TOP VIEW
le
low
l
ut,
ure
itt
ilt
is,
put
LOW REF.
I
BIAS
OUT
V-
1
2
3
4
8 +IN
7 HIGH REF.
6 V+
5 CURRENT
CONTROL
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2001. All Rights Reserved

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