DESCRIPTION

The PB51 is a high voltage, high current amplifier 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 amplifier results in a composite amplifier with the accuracy of the driver and the extended output voltage range and current capability of the booster. The PB51 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, providing symmetrical output impedance and eliminating second breakdown limitations imposed by Bipolar Transistors. Internal feedback and gainset resistors are provided for a pin-strapable gain of 3. Additional gain can be achieved with a single external resistor. Compensation is not required for most driver/gain configurations, but can be accomplished with a single external capacitor. Enormous flexibility is provided through the choice of driver amplifier, current limit, supply voltage, voltage gain, and compensation.

FEATURES

• WIDE SUPPLY RANGE — ±15V to ±150V

• HIGH OUTPUT CURRENT — 1.5A Continuous (PB51), 2.0A Continuous (PB51A)

• VOLTAGE AND CURRENT GAIN

• HIGH SLEW — 50V/µs Minimum (PB51) 75V/µs Minimum (PB51A)

• PROGRAMMABLE OUTPUT CURRENT LIMIT

• HIGH POWER BANDWIDTH — 320 kHz Minimum

• LOW QUIESCENT CURRENT — 12mA Typical

• EVALUATION KIT — EK29

APPLICATIONS

• HIGH VOLTAGE INSTRUMENTATION

• ELECTROSTATIC TRANSDUCERS & DEFLECTION

• PROGRAMMABLE POWER SUPPLIES UP TO 280V P-P