CA3094, CA3094A, CA3094B
Data Sheet
April 1999
File Number 598.7
30MHz, High Output Current Operational
Transconductance Amplifier (OTA)
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
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.
• 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)
The gain of the differential input stage is proportional to the
amplifier bias current (I
variation of the integrated circuit sensitivity with either digital
and/or analog programming signals. For example, at an I
), permitting programmable
• Total Harmonic Distortion (THD) at 0.6W in Class A
Operation 1.4% (Typ)
ABC
ABC
Applications
of 100µA, a 1mV change at the input will change the output
from 0 to 100µA (typical).
• Error Signal Detector: Temperature Control with
Thermistor Sensor; Speed Control for Shunt Wound DC
Motor
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).
• Over Current, Over Voltage, Over Temperature Protectors
• Dual Tracking Power Supply with CA3085
• Wide Frequency Range Oscillator
• Analog Timer
• Level Detector
Ordering Information
• Alarm Systems
PART NUMBER
(BRAND)
TEMP.
RANGE ( C)
PKG.
NO.
o
PACKAGE
• Voltage Follower
CA3094AT, BT
CA3094E, AE
CA3094M, BM
-55 to 125 8 Pin Metal Can
-55 to 125 8 Ld PDIP
-55 to 125 8 Ld SOIC
T8.C
• Ramp Voltage Generator
E8.3
• High Power Comparator
M8.15
• Ground Fault Interrupter (GFI) Circuits
Pinouts
CA3094 (PDIP, SOIC)
CA3094 (METAL CAN)
TOP VIEW
TOP VIEW
SINK OUTPUT
(COLLECTOR)
EXT. FREQUENCY
COMPENSATION
OR INHIBIT INPUT
SINK OUTPUT
1
2
3
4
8
7
6
5
(COLLECTOR)
TAB
EXT. FREQUENCY
COMPENSATION OR
INHIBIT INPUT
8
V+
1
7
V+
DIFFERENTIAL
VOLTAGE INPUTS
DRIVE OUTPUT
(EMITTER)
DRIVE OUTPUT
(EMITTER)
2
6
GND (V- IN DUAL
SUPPLY OPERATION)
I
CURRENT
ABC
DIFFERENTIAL
PROGRAMMABLE
INPUT
(STROBE OR AGC)
VOLTAGE INPUTS
5
3
I
CURRENT
ABC
4
GND (V- IN DUAL
SUPPLY OPERATION)
PROGRAMMABLE INPUT
(STROBE OR AGC)
NOTE: Pin 4 is connected to case.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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