PA93 Datasheet, PDF (1/4 Pages) Cirrus Logic – HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS

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FEATURES
• HIGH VOLTAGE — 400V (±200V)
• LOW QUIESCENT CURRENT — 10mA
• HIGH OUTPUT CURRENT — 8A
• PROGRAMMABLE CURRENT LIMIT
APPLICATIONS
• PIEZOELECTRIC POSITIONING
• HIGH VOLTAGE INSTRUMENTATION
• ELECTROSTATIC TRANSDUCERS
• PROGRAMMABLE POWER SUPPLIES UP TO 390V
DESCRIPTION
The PA93 is a high voltage, low quiescent current MOSFET
operational amplifier designed as a low cost solution for driving
continuous output currents up to 8A and pulse currents up to
14A. The safe operating area (SOA) has no second breakdown
limitations and can be observed for all type loads by choosing
an appropriate current limiting resistor. The MOSFET output
stage is biased AB for linear operation. External compensation
provides flexibility in choosing bandwidth 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.
EQUIVALENT SCHEMATIC
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PATENTED
TYPICAL APPLICATION
12-PIN SIP
PACKAGE STYLE DP
Formed leads available
See package styles ED & EE
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LOW POWER, PIEZOELECTRIC POSITIONING
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 PA93 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.
PHASE COMPENSATION
GAIN C_C*
R_C
≥1
220pF 100Ω
≥2
100pF 100Ω
≥4
47pF 0Ω
≥17 10pF 0Ω
*C_C Never to be <10pF. C_C to be rated for the full supply
voltage +VS to -VS. Use ceramic NPO (COG) type.
EXTERNAL CONNECTIONS
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]
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