1140V SIGNAL OUTPUT WIDE SUPPLY RANGE ±75V ±600V PROGRAMMABLE CURRENT

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1140V SIGNAL OUTPUT WIDE SUPPLY RANGE ±75V ±600V PROGRAMMABLE CURRENT

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1140V SIGNAL OUTPUT WIDE SUPPLY RANGE ±75V ±600V PROGRAMMABLE CURRENT LIMIT CONTINUOUS OUTPUT CURRENT HERMETIC SEALED PACKAGE INPUT PROTECTION
PATENTED
APPLICATIONS
PIEZOELECTRIC POSITIONING HIGH VOLTAGE INSTRUMENTATION ELECTROSTATIC DEFLECTION SEMICONDUCTOR TESTING
TYPICAL APPLICATION
HIGH VOLTAGE MO-127 PACKAGE STYLE
DESCRIPTION
PA89 ultra high voltage, MOSFET operational amplifier designed output currents Output voltages swing over 1000V p-p. safe operating area (SOA) second breakdown limitations observed with types loads choosing appropriate current limiting resistor. High accuracy achieved with cascode input circuit configuration 120dB open loop gain. internal biasing referenced bootstrapped zenerMOSFET current source, giving PA89 wide supply range excellent supply rejection. MOSFET output stage biased class linear operation. External compensation provides user flexibility. PA89 100% gross leak tested military standards long term reliability. This hybrid integrated circuit utilizes beryllia (BeO) substrate, thick film resistors, ceramic capacitors semiconductor chips maximize reliability, minimize size give performance. Ultrasonically bonded aluminum wires provide reliable interconnections operating temperatures. MO-127 High Voltage, Power Dippackage hermetically sealed electrically isolated. compressible thermal washers will void product warranty.
Ultra-high voltage capability combined with bridge amplifier configuration makes possible develop +/-1000 volt peak swings across piezo element. high gain insures stability with capacitive load, while "noise-gain" compensation insure stability operating noise gain
EXTERNAL CONNECTIONS
SIMPLIFIED SCHEMATIC
PHASE COMPENSATION
Gain 470pF 68pF 33pF 15pF
Note: must rated full supply voltage +Vs. details under "EXTERNAL COMPONENTS".
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
PA89 PA89A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, OUTPUT CURRENT, within POWER DISSIPATION, internal 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, solder TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case PA89
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
1200V 100mA ±25V 300°C 150°C 125°C 125°C PA89A
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, temperature OFFSET VOLTAGE, supply OFFSET VOLTAGE, time BIAS CURRENT, initial3 BIAS CURRENT,vs. supply OFFSET CURRENT, initial3 INPUT IMPEDANCE, INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE4 COMMON MODE REJECTION, INPUT NOISE GAIN OPEN LOOP GAIN 10Hz GAIN BANDWIDTH PRODUCT POWER BANDWIDTH PHASE MARGIN OUTPUT VOLTAGE SWING4 VOLTAGE SWING4 CURRENT, continuous SLEW RATE CAPACITIVE LOAD, CAPACITIVE LOAD, Av>10 SETTLING TIME POWER SUPPLY VOLTAGE, CURRENT, quiescent THERMAL RESISTANCE, junction case5 RESISTANCE, junction case RESISTANCE, junction TEMPERATURE RANGE, case TEST CONDITIONS
UNITS µV/°C µV/V µV/kh pA/V V/µs °C/W °C/W °C/W
Full temperature range
Full temperature range Full temperature range, ±90V 10kHz 10K, 15pF 10k, 15pF 10k, 15pF, 10k, 15pF, 500V Full temperature range, 75mA Full temperature range, 20mA Full temperature range 15pF, Full temperature range Full temperature range 10K, step, Full temperature range
±500
±600
Full temperature range, 60Hz Full temperature range, 60Hz Full temperature range Meets full range specifications
NOTES: specification PA89A identical specification PA89 applicable column left. Unless otherwise noted: 25°C, 68pF, 220, ±500V. Input parameters bias currents offset voltage values given. Long term operation maximum junction temperature will result reduced product life. Derate internal power dissipation achieve high MTTF. Doubles every 10°C temperature increase. denote positive negative supply rail respectively. Rating applies only output current alternates between both output transistors rate faster than 60Hz.
CAUTION
PA89 constructed from MOSFET transistors. handling procedures must observed. internal substrate contains beryllia (BeO). break seal. accidentally broken, crush, machine, subject temperatures excess 850°C avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 APPLICATIONS HOTLINE: (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
PA89 PA89A
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
PA89 PA89A
GENERAL
Please read Application Note "General Operating Considerations" which covers stability, supplies, heat sinking, mounting, current limit, interpretation, specification interpretation. Visit www.apexmicrotech.com design tools that help automate tasks such calculations stability, internal power dissipation, current limit; heat sink selection; Apex's complete Application Notes library; Technical Seminar Workbook; Evaluation Kits.
OPERATING CONSIDERATIONS
STABILITY
Although PA89 operated unity gain, maximum slew rate bandwidth performance designed obtained gains more. small signal response phase response graphs guide. applications where gains less than required, noise gain compensation increase phase margin application circuit illustrated typical application drawing.
SAFE OPERATING AREA (SOA)
MOSFET output stage this power operational amplifier distinct limitations: current handling capability MOSFET geometry wire bonds. junction temperature output MOSFETs. NOTE: output stage protected against transient flyback. However, protection against sustained, high energy flyback, external fast-recovery diodes should used.
cern building circuits: voltage rating voltage coefficient. compensation capacitance must rated full supply voltage range. example, with supply voltages ±500V possible voltage swing across 1000V. addition, voltage coefficient less than 100PPM recommended maintain capacitance variation less than this example. strongly recommended highest quality capacitor possible rated least twice total supply voltage range. equal importance voltage rating voltage coefficient gain setting resistances. Typical voltage ratings wattage resistors 250V. above example 1000V could appear across feedback resistor. This would require several resistors series obtain proper voltage rating. voltage coefficient resistors will insure good gain linearity. wattage rating feedback resistor also concern. megohm feedback resistor could easily develop watt power dissipation. Though high voltage rated resistors obtained, megohm feedback resistor comprised five 200Kohm, watt metal film resistors series will produce proper voltage rating, voltage coefficient wattage rating.
CURRENT LIMIT
proper operation current limit resistor (RCL) must connected shown external connection diagram. minimum value ohm, however optimum reliability resistor value should high possible. value calculated follows with maximum practical value ohms. ILIM When setting value allow load current well current feedback resistor. Also allow temperature coefficient current limit which approximately -0.3% case temperature rise.
CAUTIONS
operating voltages PA89 potentially lethal. During circuit design, develop functioning circuit lowest possible voltages. Clip test leads should used "hands off" measurements while troubleshooting.
POWER SUPPLY PROTECTION
Unidirectional zener diode transient absorbers recommended protection supply pins. zeners clamp transients voltages within power supply rating also clamp power supply reversals ground. Whether zeners used not, system power supply should evaluated transient performance including power-on overshoot power-off polarity reversals well line regulation. Conditions which cause open circuits polarity reversals either power supply rail should avoided protected against. Reversals opens negative supply rail known induce input stage failure. Unidirectional transzorbs prevent this, desirable that they both electrically physically close amplifier possible.
SAFE OPERATING CURVES
safe operating area curves define maximum additional internal power dissipation amplifier tolerate when produces necessary output drive external load. This same absolute maximum internal power dissipation listed elsewhere specification since quiescent power dissipation significant compared total.
EXTERNAL COMPONENTS
very high operating voltages PA89 demand consideration component specifications rarely con-
This data sheet been carefully checked believed reliable, SHANNON ROAD assumed ARIZONA 85741 APPLICATIONS subject (800) 546-2739 APEX MICROTECHNOLOGY CORPORATION 5980 NORTH however, responsibility TUCSON, possible inaccuracies omissions. specificationsHOTLINE: change without notice.
PA89U OCTOBER 2004
2004 Apex Microtechnology Corp.

1140V SIGNAL OUTPUT WIDE SUPPLY RANGE ±75V ±600V PROGRAMMABLE CURRENT

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