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CA3094E

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[ /Title (CA30 94, CA309 4A, CA309 4B) /Subject (30MH z, High Output Current Operational Transc onductance Amplifier (OTA)) /Autho r () /Keywords (Intersil Corporation, Semiconductor, power switch, power amplifier, T NT DUC PRO LACEME RSIL TE OLE REP 8-INTE OBS ENDED -88 .com M ns 1 l COM plicatio intersi E p NO R tral AData tSheet pp@ na Cen : ce Call or email CA3094, CA3094A, CA3094B October 2000 File Number 30MHz, High Output Current Operational Transconductance Amplifier (OTA) Features 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. 598.8 • CA3094AT, E, M for Operation Up to 36V 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 100µA, a 1mV change at the input will change the output from 0 to 100µA (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). TEMP. RANGE (oC) • 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 Ordering Information PART NUMBER (BRAND) • CA3094E, M for Operation Up to 24V PACKAGE PKG. NO. • Alarm Systems • Voltage Follower CA3094AT, BT -55 to 125 8 Pin Metal Can T8.C • Ramp Voltage Generator CA3094E, AE -55 to 125 8 Ld PDIP E8.3 • High Power Comparator CA3094M, BM -55 to 125 8 Ld SOIC M8.15 • Ground Fault Interrupter (GFI) Circuits Pinouts CA3094 (PDIP, SOIC) TOP VIEW EXT. FREQUENCY COMPENSATION OR INHIBIT INPUT DIFFERENTIAL VOLTAGE INPUTS GND (V- IN DUAL SUPPLY OPERATION) 1 8 CA3094 (METAL CAN) TOP VIEW SINK OUTPUT (COLLECTOR) 7 V+ 3 6 5 IABC CURRENT EXT. FREQUENCY COMPENSATION OR INHIBIT INPUT 8 TAB DRIVE OUTPUT (EMITTER) 4 SINK OUTPUT (COLLECTOR) 2 1 7 2 PROGRAMMABLE INPUT (STROBE OR AGC) DIFFERENTIAL VOLTAGE INPUTS V+ 6 5 3 4 GND (V- IN DUAL SUPPLY OPERATION) DRIVE OUTPUT (EMITTER) IABC CURRENT PROGRAMMABLE INPUT (STROBE OR AGC) NOTE: Pin 4 is connected to case. 3-1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 2000

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