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The PA80 series of high voltage operation amplifiers provides an extremely wide range of supply capability with two overlapping products. High accuracy is achieved with a cascode input circuit configuration. All internal biasing is referenced to a zener diode. As a result, these models offer outstanding common mode and power supply rejection. The output stage operates in the class A/B mode for best linearity. Internal phase compensation assures stability at all gain settings witout external components. Fixed internal current limits protect these amplifiers against a short circuit to common at most supply voltages. For sustained high energy flyback, external fast recovery diodes should be used. However, a heatsink may be necessary to maintain the proper case temperature under normal operating conditions.
This hybrid circuit utilizes thick film resistors, ceramic capacitors and silicon semiconductors to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The 8-pin TO-3 package (see Package Outlines) is hermetically sealed and isolated from the internal circuits. The use of compressible thermal washers voids the warranty.
PA82J Maximum Ratings
SUPPLY VOLTAGE, +VS to VS
300V
OUTPUT CURRENT, within SOA
Internally Limited
POWER DISSIPATION, internal
11.5W
INPUT VOLTAGE, differential
±300V
INPUT VOLTAGE, common mode
±VS
TEMPERATURE, pin solder-10 sex
300
TEMPERATURE, junction
150
TEMPERATURE RANGE, storage
65 to 125
OPERATING TEMPERATURE RANGE, case
55 to 125
PA82J Features
• HIGH VOLTAGE OPERATION - ±150V (PA82J) • HIGH OUTPUT CURRENT - ±30mA (PA81J) • LOW BIAS CURRENT, LOW NOISE - FET Input
PA82J Typical Application
• HIGH IMPEDANCE BUFFERS UP TO ±140V • ELECTROSTATIC TRANSDUCER & DEFLECTION • PROGRAMMABLE POWER SUPPLIES TO ±145V • BIOCHEMISTRY STIMULATORS • COMPUTER TO VACUUM TUBE INTERFACE
PA83 Parameters
Technical/Catalog Information
PA83
Vendor
Cirrus Logic Inc
Category
Integrated Circuits (ICs)
Packaging
Tube
Amplifier Type
Power
Number of Circuits
1 - Single
Package / Case
TO-3-8
Slew Rate
30 V/s
Gain Bandwidth Product
5MHz
Current - Supply
6mA
Current - Output/Channel
75mA
Voltage - Supply, Single/Dual (±)
30 V ~ 300 V, ±15 V ~ 150 V
Output Type
-
-3db Bandwidth
-
Current - Input Bias
5pA
Operating Temperature
-25°C ~ 85°C
Voltage - Input Offset
1500V
Lead Free Status
Lead Free
RoHS Status
RoHS Compliant
Other Names
PA83 PA83 598 1322 ND 5981322ND 598-1322
PA83 General Description
The PA83 is a high voltage operational amplifier designed for output voltage swings up to ±145V with a dual (±) supply or 290V with a single supply. Its input stage is protected against transient and steady state overvoltages up to and including the supply rails. High accuracy is achieved with a cascode input circuit configuration. All internal biasing is referenced to a zener diode fed by a FET constant current source. As a result, the PA83 features an unprecedented supply range and excellent supply rejection. The output stage is biased in the class A/B mode for linear operation. Internal phase compensation assures stability at all gain settings without need for external components. Fixed current limits protect these amplifiers against shorts to common at supply voltages up to 120V. For operation into inductive loads, two external flyback pulse protection diodes are recommended. However, a heatsink may be necessary to maintain the proper case temperature under normal operating conditions.
This hybrid circuit utilizes beryllia (BeO) substrates, thick (cermet) film resistors, ceramic capacitors and silicon semiconductor chips to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. The use of compressible thermal isolation washers and/or improper mounting torque voids product warranty. Please see Application Note 1 "General Operating Considerations".
The PA83A is the A grade version, the PA83M/883 is the certified military grade version.