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PDF CA3098 Data sheet ( Hoja de datos )
| Número de pieza | CA3098 | |
| Descripción | Programmable Schmitt Trigger with Memory / Dual Input Precision Level Detector | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CA3098 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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NTCMOaRll E1OC-8OB88MS-OMINLETENETDREESPDILRROoErDP3UL2C1AT-C72E4M-7E1N4T3
CA3098
January 1999
File Number 896.5
Programmable Schmitt Trigger with
Memory, Dual Input Precision Level
Detector
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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):
1. Differential amplifiers and summer: the circuit uses two
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.
2. Flip-flop: the flip-flop functions as a bistable “memory”
element that changes state in response to each trigger
command.
3. Driver and output stages: these stages permit the circuit
to “sink” 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.
Pinout
CA3098
(PDIP)
TOP VIEW
le
low
l
ut,
LOW REF. 1
IBIAS 2
OUT 3
V- 4
8 +IN
7 HIGH REF.
6 V+
5 CURRENT
CONTROL
ure
itt
ilt
is,
put
Features
• Programmable Operating Current
• Micropower Standby Dissipation
• Direct Control of Currents Up to . . . . . . . . . . . . . . . 150mA
• Low Input On/Off Current of Less Than 1nA for
Programmable Bias Current of 1µA
• Built-in Hysteresis . . . . . . . . . . . . . . . . . . . . . 20mV (Max)
Applications
• Control of Relays, Heaters, LEDs, Lamps, Photosensitive
Devices, Thyristors, Solenoids, etc.
• 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
PART
NUMBER
TEMP
RANGE (oC)
PACKAGE PKG. NO.
CA3098E
-55 to 125 8 Ld PDIP
E8.3
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 © Intersil Americas Inc. 2001. All Rights Reserved
1 page  
CA3098
Test Circuits
IBIAS
+6V
IBIAS
V+
ITOTAL
1.5kΩ
2
6
150Ω
85
7 CA3098
3 VO
1
VI VHR VLR
4
-6V
FIGURE 2. INPUT OFFSET VOLTAGE TEST CIRCUIT
IBIAS
V+
IIB
mA 8
7
1
VI VREG
mA
1.1kΩ
2
6
5
CA3098
3
4
110Ω
FIGURE 3. TOTAL SUPPLY CURRENT, AND INPUT BIAS
CURRENT TEST CIRCUIT
450Ω
2
6
45Ω
VI 8
5
7 CA3098
3 VO
1
VREG
4
VI
VO
tD
tF
tS
tR
FIGURE 4. SWITCHING TIME TEST CIRCUIT
5
5 Page 
Typical Applications (Continued)
CA3098
+6V
120VAC
60Hz
R3
100kΩ
SENSOR
(e.g., 100kΩ)
R1
100kΩ
R2
100kΩ
R4
100kΩ
1kΩ
2
6
85
7 CA3098
3
1
4
G
MT1
TRIAC MT2
LOAD
V-
FIGURE 32. OFF/ON CONTROL OF TRIAC WITH
PROGRAMMABLE HYSTERESIS
2.5V
0V
TRIGGER
INPUT
1MΩ
1kΩ
1.1MΩ
8
C1
7
6
5
CA3098
3
1
2
1kΩ 4
60kΩ
LAMP
-6V
DESIRED tON
(ms)
15
150
300
VALUE OF C1
(µF)
0.01
0.1
0.2
FIGURE 33. ONE SHOT MULTIVIBRATOR
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet CA3098.PDF ] | |
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