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PB50 Datasheet, PDF (1/4 Pages) Cirrus Logic – POWER BOOSTER AMPLIFIER | |||
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FEATURES
⢠WIDE SUPPLY RANGE â ±30V to ±100V
⢠HIGH OUTPUT CURRENT â Up to 2A Continuous
⢠VOLTAGE AND CURRENT GAIN
⢠HIGH SLEW RATE â 50V/µs Minimum
⢠PROGRAMMABLE OUTPUT CURRENT LIMIT
⢠HIGH POWER BANDWIDTH â 160 kHz Minimum
⢠LOW QUIESCENT CURRENT â 12mA Typical
APPLICATIONS
⢠HIGH VOLTAGE INSTRUMENTATION
⢠Electrostatic TRANSDUCERS & DEFLECTION
⢠Programmable Power Supplies Up to 180V p-p
DESCRIPTION
The PB50 is a high voltage, high current ampliï¬er designed
to provide voltage and current gain for a small signal, general
purpose op amp. Including the power booster within the feed-
back loop of the driver ampliï¬er results in a composite ampliï¬er
with the accuracy of the driver and the extended output voltage
range and current capability of the booster. The PB50 can also
be used without a driver in some applications, requiring only
an external current limit resistor to function properly.
The output stage utilizes complementary MOSFETs, provid-
ing symmetrical output impedance and eliminating secondary
breakdown limitations imposed by Bipolar Junction Transis-
tors. Internal feedback and gainset resistors are provided for
a pin-strappable gain of 3. Additional gain can be achieved
with a single external resistor. Compensation is not required
for most driver/gain conï¬gurations, but can be accomplished
with a single external capacitor. Although the booster can
be conï¬gured quite simply, enormous ï¬exibility is provided
through the choice of driver ampliï¬er, current limit, supply
voltage, voltage gain, and compensation.
This hybrid circuit utilizes a 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 electrically isolated and hermetically sealed using
one-shot resistance welding. The use of compressible isolation
washers voids the warranty.
TYPICAL APPLICATION
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Figure 1. Inverting composite ampliï¬er.
EQUIVALENT SCHEMATIC
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8-PIN TO-3
PACKAGE STYLE CE
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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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