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FEATURES
•
•
•
•
HIGH VOLTAGE — 900V (±450V)
HIGH SLEW RATE — 500V/µS
HIGH OUTPUT CURRENT — 100mA
PROGRAMMABLE CURRENT LIMIT
PATENTED
APPLICATIONS
•
•
•
•
HIGH VOLTAGE INSTRUMENTATION
PROGRAMMABLE POWER SUPPLIES UP TO ±430V
MASS SPECTROMETERS
SEMICONDUCTOR MEASUREMENT EQUIPMENT
8-PIN SIP
PACKAGE STYLE DQ
Formed leads available
See package styles EC & EP
DESCRIPTION
The PA94 is a high voltage, MOSFET operational amplifier
designed as a low cost solution for driving continuous output
currents up to 100mA and pulse currents up to 200mA into
capacitive loads. The safe operating area (SOA) has no sec-
ond breakdown limitations and can be observed for all load
types by choosing an appropriate current limiting resistor.
The MOSFET output stage is biased AB for linear operation.
External compensation provides flexibility in choosing band-
width and slew rate for the application. APEX’s Power SIP
package uses a minimum of board space allowing for high
density circuit boards.. The Power SIP package is electrically
isolated. Isolating thermal washers (TW13) prevent arcing
from pins to heatsink.
TYPICAL APPLICATION
Piezo positioning may be applied to the focusing of segment-
ed mirror systems. The composite mirror may be composed of
hundreds of elements, each requiring focusing under computer
control. In such complex systems the PA94 reduces the costs
of power supplies and cooling with its advantages of low cost
and low quiescent power consumption while increasing circuit
density with the SIP package.
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PHASE COMPENSATION
GAIN
C
C
≥100
2.2pF
≥50
4.7pF
≥10
22pF
C
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rated for full supply voltage.
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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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APEX [ CIRRUS LOGIC ]
