PA78 PA78 PA78 Power Operational Amplifier FEATURES DESCRIPTION The PA78 is a high voltage, high speed, low idle cur- A Unique (Patent Pending) Technique for Very rent op-amp capable of delivering up to 200mA peak Low Quiescent Current output current. Due to the dynamic biasing of the input Over 350 V/s Slew Rate stage, it can achieve slew rates over 350V/s, while Wide Supply Voltage only consuming less than 1mA of idle current. External Single Supply: 20V To 350V phase compensation allows great flexibility for the user Split Supplies: 10V To 175V to optimize bandwidth and stability. Output Current 150mA Cont. 200mA Pk The output stage is protected with user selected cur- Up to 23 Watt Dissipation Capability rent limit resistor. For the selection of this current limit- Over 200 kHz Power Bandwidth ing resistor, pay close attention to the SOA curves for each package type. Proper heatsinking is required for APPLICATIONS maximum reliability. Piezoelectric Positioning and Actuation Electrostatic Deflection Deformable Mirror Actuators Chemical and Biological Stimulators BLOCK DIAGRAM VOUT+ ACTIVE LOAD BUFFER V+ CLASS AB INPUT STAGE V VOUT CURRENT VOUT LIMIT ACTIVE LOAD 20Pin PSOP PACKAGE STYLE DK Copyright Apex Microtechnology, Inc. 2012 OCT 2012 PwwwA78U .apexanalog.com 1 (All Rights Reserved) PA78U REVEPA78 CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Units SUPPLY VOLTAGE, +V to V 350 V S S OUTPUT CURRENT, peak (200ms), within SOA 200 mA POWER DISSIPATION, internal, DC 14 W INPUT VOLTAGE, differential 15 16 V INPUT VOLTAGE, common mode V +V V S S TEMPERATURE, junction (Note 2) 150 C TEMPERATURE RANGE, storage 55 125 C OPERATING TEMPERATURE, case 40 125 C SPECIFICATIONS Parameter Test Conditions Min Typ Max Units INPUT OFFSET VOLTAGE -40 8 40 mV 0 to 125C (Case Temperature) OFFSET VOLTAGE vs. temperature -63 V/C OFFSET VOLTAGE vs. supply 32 V/V BIAS CURRENT, initial 8.5 200 pA OFFSET CURRENT, initial 12 400 pA 8 INPUT RESISTANCE, DC 10 COMMON MODE VOLTAGE RANGE, pos. +V - 2 V S COMMON MODE VOLTAGE RANGE, neg. -V + 5.5 V S COMMON MODE REJECTION, DC 90 118 dB NOISE 700KHz 418 V RMS NOISE, V NOISE 500 nV/Hz O GAIN OPEN LOOP 1Hz 89 120 dB GAIN BANDWIDTH PRODUCT 1MHz 1 MHz PHASE MARGIN Full temperature range 50 OUTPUT VOLTAGE SWING I = 10mA V - 2 V O S VOLTAGE SWING I = 100mA V - 8.6 V - 12 V O S S VOLTAGE SWING I = 150mA V - 10 V O S CURRENT, continuous, DC 150 mA SLEW RATE Package Tab connected to GND 100 350 V/S SETTLING TIME, to 0.1% 2V Step 1 S POWER BANDWIDTH, 300V +V = 160V, V = -160V 200 kHz P-P S S OUTPUT RESISTANCE, No load R = 6.2 44 CL POWER SUPPLY VOLTAGE 10 150 175 V CURRENT, quiescent (Note 5) 150V Supply 0.2 0.7 2.5 mA 2 PA78U