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PA08 Datasheet, PDF (1/4 Pages) Cirrus Logic – POWER OPERATIONAL AMPLIFIERS | |||
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FEATURES
⢠WIDE SUPPLY RANGE â ±15V to ±150V
⢠PROGRAMMABLE OUTPUT CURRENT LIMIT
⢠HIGH OUTPUT CURRENT â Up to ±150mA
⢠LOW BIAS CURRENT â FET Input
APPLICATIONS
⢠HIGH VOLTAGE INSTRUMENTATION
⢠ELECTROSTATIC TRANSDUCERS & DEFLECTION
⢠PROGRAMMABLE POWER SUPPLIES UP TO 290V
⢠ANALOG SIMULATORS
DESCRIPTION
The PA08 is a high voltage operational ampliï¬er designed
for output voltage swings of up to ±145V with a dual (±) sup-
ply or 290V with a single supply. High accuracy is achieved
with a cascode input circuit conï¬guration. All internal biasing
is referenced to a zener diode fed by a FET constant current
source. As a result, the PA08 features an unprecedented sup-
ply range and excellent supply rejection. The output stage is
biased-on for linear operation. Internal phase compensation
assures stability at all gain settings. The safe operating area
(SOA) can be observed with all types of loads by choosing
the appropriate current limiting resistors. For operation into
inductive loads, two external ï¬yback pulse protection diodes
are recommended. A heatsink may be necessary to maintain
the proper case temperature under normal operating condi-
tions.
This hybrid integrated circuit utilizes beryllia (BeO) substrate,
thick ï¬lm resistors, ceramic capacitors and semiconductor chips
to maximize reliability, minimize size and give top performance.
Ultrasonically bonded aluminum wires provide reliable inter-
connections 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 will void the product warranty. Please see
âGeneral Operating Considerationsâ.
EQUIVALENT SCHEMATIC
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TYPICAL APPLICATION
8-PIN TO-3
PACKAGE STYLE CE
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ATE PIN DRIVER
The PA08 as a pin driver is capable of supplying high test
voltages to a device under test (DUT). Due to the possibility
of short circuits to any terminal of the DUT, current limit must
be set to be safe when limiting with a supply to output volt-
age differential equal to the ampliï¬er supply plus the largest
magnitude voltage applied to any other pin of the DUT. In
addition, ï¬yback diodes are recommended when the output of
the ampliï¬er exits any equipment enclosure to prevent damage
due to electrostatic discharges. Refer to Application Note 7
for details on accuracy considerations of this circuit.
EXTERNAL CONNECTIONS
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APEX MICROTECHNOLOGY CORPORATION ⢠TELEPHONE (520) 690-8600 ⢠FAX (520) 888-3329 ⢠ORDERS (520) 690-8601 ⢠EMAIL prodlit@apexmicrotech.com
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