PB50 APEX | Alldatasheet

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Technical content

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

FEATURES

  • WIDE SUPPLY RANGE — ±30V to ±100V
  • HIGH OUTPUT CURRENT — Up to 2A Continuous
  • VOLTAGE AND CURRENT GAIN
  • HIGH SLEW RATE — 50V/µs Minimum
  • PROGRAMMABLE OUTPUT CURRENT LIMIT
  • HIGH POWER BANDWIDTH — 160 kHz Minimum
  • LOW QUIESCENT CURRENT — 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 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 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 configurations, but can be accomplished with a single external capacitor. Although the booster can be configured quite simply, enormous flexibility is provided through the choice of driver amplifier, current limit, supply voltage, voltage gain, and compensation. This hybrid circuit utilizes a beryllia (BeO) substrate, thick film 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 Figure 1. Inverting composite amplifier.

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739 PB50 ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +VS to –VS 200V OUTPUT CURRENT, within SOA 2A POWER DISSIPATION, internal at TC = 25°C1 35W INPUT VOLTAGE, referred to common ±15V TEMPERATURE, pin solder—10 sec max 300°C TEMPERATURE, junction1 150°C TEMPERATURE, storage –65 to +150°C OPERATING TEMPERATURE RANGE, case –55 to +125°C SPECIFICATIONS PARAMETER TEST CONDITIONS2 MIN TYP MAX UNITS INPUT OFFSET VOLTAGE, initial ±.75 ±1.75 V OFFSET VOLTAGE, vs. temperature Full temperature range –4.5 –7 mV/°C INPUT IMPEDANCE, DC 25 50 kΩ INPUT CAPACITANCE 3 pF CLOSED LOOP GAIN RANGE 3 10 25 V/V GAIN ACCURACY, internal Rg, Rf A V = 3 ±10 ±15 % GAIN ACCURACY, external Rf A V = 10 ±15 ±25 % PHASE SHIFT F = 10kHz, AVCL = 10, CC = 22pF 10 ° F = 200kHz, AVCL = 10, CC = 22pF 60 ° OUTPUT VOLTAGE SWING Io = 2A V S–11 V S –9 V VOLTAGE SWING Io = 1A VS–10 V S –7 V VOLTAGE SWING Io = .1A VS–8 V S –5 V CURRENT, continuous 2 A SLEW RATE Full temperature range 50 100 V/µs CAPACITIVE LOAD Full temperature range 2200 pF SETTLING TIME to .1% RL = 100Ω, 2V step 2 µs POWER BANDWIDTH VC = 100Vpp 160 320 kHz SMALL SIGNAL BANDWIDTH C C = 22pF, AV = 25, Vcc = ±100 100 kHz SMALL SIGNAL BANDWIDTH C C = 22pF, AV = 3, Vcc = ±30 1 MHz POWER SUPPLY VOLTAGE, ±VS

3 Full temperature range ±305 ±60 ±100 V

CURRENT, quiescent VS = ±30 9 12 mA VS = ±60 12 18 mA VS = ±100 17 25 mA THERMAL RESISTANCE, AC junction to case4 Full temp. range, F > 60Hz 1.8 2.0 °C/W RESISTANCE, DC junction to case Full temp. range, F < 60Hz 3.2 3.5 °C/W RESISTANCE, junction to air Full temperature range 30 °C/W TEMPERATURE RANGE, case Meets full range specifications –25 25 85 °C NOTES: 1. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF (Mean Time to Failure). 2. The power supply voltage specified under typical (TYP) applies, T C = 25°C unless otherwise noted. 3. +V S and –VS denote the positive and negative supply rail respectively. 4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. 5. +V S must be at least 15V above COM, –VS must be at least 30V below COM. The PB50 is constructed from MOSFET transistors. ESD handling procedures must be observed. The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes. CAUTION

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com TYPICAL PERFORMANCE GRAPHSPB50

Workbook; and Evaluation Kits. flyback, external fast-recovery diodes should be used. are gain, stability, slew rate, and output swing of the driver. driver, but makes stability more difficult to achieve. to the composite gain divided by the booster gain.

  1. Operate the booster in the lowest practical gain.
  2. Operate the driver amplifier in the highest practical effective
  3. Keep gain-bandwidth product of the driver lower than the

closed loop bandwidth of the booster.

  1. Minimize phase shift within the loop.

and loop compensation capacitors Cc and Cf when required. Typical values are 5pF to 33pF. square wave response with the op amp drivers listed. Typical values for case where op amp effective gain = 1. Figure 2. Non-inverting composite amplifier. equal to the booster slew rate. when calculating maximum available driver swing. This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. PB50U REV H OCTOBER 2004 © 2004 Apex Microtechnology Corp.