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CA3094 Datasheet(PDF) 1 Page - Intersil Corporation

Part No. CA3094
Description  30MHz, High Output Current Operational Transconductance Amplifier (OTA)
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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3-12
CA3094, CA3094A, CA3094B
30MHz, High Output Current Operational
Transconductance Amplifier (OTA)
The CA3094 is a differential input power control
switch/amplifier with auxiliary circuit features for ease of
programmability. For example, an error or unbalance signal
can be amplified by the CA3094 to provide an on-off signal or
proportional control output signal up to 100mA. This signal is
sufficient to directly drive high current thyristors, relays, DC
loads, or power transistors. The CA3094 has the generic
characteristics of the CA3080 operational amplifier directly
coupled to an integral Darlington power transistor capable of
sinking or driving currents up to 100mA.
The gain of the differential input stage is proportional to the
amplifier bias current (IABC), permitting programmable
variation of the integrated circuit sensitivity with either digital
and/or analog programming signals. For example, at an IABC
of 100
µA, a 1mV change at the input will change the output
from 0 to 100
µA (typical).
The CA3094 is intended for operation up to 24V and is
especially useful for timing circuits, in automotive equipment,
and in other applications where operation up to 24V is a
primary design requirement (see Figures 28, 29 and 30 in
Typical Applications text). The CA3094A and CA3094B are
like the CA3094 but are intended for operation up to 36V and
44V, respectively (single or dual supply).
Features
• CA3094E, M for Operation Up to 24V
• CA3094AT, E, M for Operation Up to 36V
• CA3094BT, M for Operation Up to 44V
• Designed for Single or Dual Power Supply
• Programmable: Strobing, Gating, Squelching, AGC
Capabilities
• Can Deliver 3W (Average) or 10W (Peak) to External Load
(in Switching Mode)
• High Power, Single Ended Class A Amplifier will Deliver
Power Output of 0.6W (1.6W Device Dissipation)
• Total Harmonic Distortion (THD) at 0.6W in Class A
Operation 1.4% (Typ)
Applications
• Error Signal Detector: Temperature Control with
Thermistor Sensor; Speed Control for Shunt Wound DC
Motor
• Over Current, Over Voltage, Over Temperature Protectors
• Dual Tracking Power Supply with CA3085
• Wide Frequency Range Oscillator
• Analog Timer
• Level Detector
• Alarm Systems
• Voltage Follower
• Ramp Voltage Generator
• High Power Comparator
• Ground Fault Interrupter (GFI) Circuits
Pinouts
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (oC)
PACKAGE
PKG.
NO.
CA3094AT, BT
-55 to 125
8 Pin Metal Can
T8.C
CA3094E, AE
-55 to 125
8 Ld PDIP
E8.3
CA3094M, BM
-55 to 125
8 Ld SOIC
M8.15
CA3094 (PDIP, SOIC)
TOP VIEW
CA3094 (METAL CAN)
TOP VIEW
NOTE: Pin 4 is connected to case.
EXT. FREQUENCY
GND (V- IN DUAL
1
2
3
4
8
7
6
5
SINK OUTPUT
V+
DRIVE OUTPUT
IABC CURRENT
COMPENSATION
OR INHIBIT INPUT
SUPPLY OPERATION)
(COLLECTOR)
(EMITTER)
PROGRAMMABLE
(STROBE OR AGC)
DIFFERENTIAL
VOLTAGE INPUTS
INPUT
SINK OUTPUT
DRIVE OUTPUT
GND (V- IN DUAL
EXT. FREQUENCY
V+
2
4
6
1
3
7
5
8
DIFFERENTIAL
VOLTAGE INPUTS
COMPENSATION OR
INHIBIT INPUT
(COLLECTOR)
(EMITTER)
IABC CURRENT
PROGRAMMABLE INPUT
(STROBE OR AGC)
SUPPLY OPERATION)
TAB
Data Sheet
April 1999
File Number
598.7
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Copyright
© Intersil Corporation 1999




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