PA94中文资料

3. Although supply voltages can range up to ± 450V the input pins cannot swing over this range. The input pins must be at least 30V from either supply rail but not more than 450V from either supply rail. See text for a more complete description of the common mode voltage range.
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EQUIVALENT SCHEMATIC
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PA94U
TYPICAL APPLICATION
Piezo positioning may be applied to the focusing of segmented mirror systems. The composite mirror may be composed of hundreds of elements, each requiring focusing under computer control. In such complex systems the PA94 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.
4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
5. Derate max supply rating 0.625 V/°C below 25°C case. No derating needed above 25°C case.
Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved)
AUG 2008 APEX − PA94UREVK
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PA94
Product Innova tionFrom
EXTERNAL CONNECTIONS
in excess of 850°C to avoid toxic fumes.
Specifications
Parameter INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE vs. temperature OFFSET VOLTAGE vs. supply OFFSET VOLTAGE vs. time BIAS CURRENT, initial BIAS CURRENT vs. supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE (Note 3) COMMON MODE REJECTION, DC NOISE
CAUTION
The PA94 is constructed from MOSFET transistors. ESD handling procedures must be observed. The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures
Symbol
Min
-20 -VS
−40 −25
PATENTED
8-pin SIP PACKAGE STYLE DQ
Formed leads available See package style EC
Max 900 200 30 20 VS 260 150 85 85
Units V mA W V V °C °C °C °C
Absolute Maximum Ratings
Parameter SUPPLY VOLTAGE, +VS to –VS OUTPUT CURRENT, source, sink, within SOA POWER DISSIPATION, continuous @ TC = 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode (Note 3) TEMPERATURE, pin solder, 10s max. TEMPERATURE, junction (Note 2) TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case
Test Conditions1
RL = 5KΩ RL = 5KΩ RL = 5KΩ Full temp range
IO = 70mA CC =2.2pF 2V Step no load
Full temp range, F > 60Hz Full temp range, F < 60Hz Full temp range Meets full range specifications
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PAP9A944
High Voltage Power Operational Amplifiers
FEATURES
♦ HIGH VOLTAGE — 900V (±450V) ♦ HIGH SLEW RATE — 500V/µS ♦ HIGH OUTPUT CURRENT — 100mA ♦ PROGRAMMABLE CURRENT LIMIT
500
mV µV/°C µV/V µV/kHz
pA pA/V pA
Ω pF V
dB µV RMS

PA94U
元器件交易网
Product Innova tionFrom
PA94
Parameter GAIN OPEN LOOP @ 15Hz GAIN BANDWIDTH PRODUCT @ 1MHz POWER BANDWIDTH PHASE MARGIN, A V = 100 OUTPUT VOLTAGE SWING CURRENT, continuous SLEW RATE, A V = 100 SETTLING TIME, to 0.1% RESISTANCE POWER SUPPLY VOLTAGE (Note 5) CURRENT, quiescent total CURRENT, quiescent output stage only THERMAL RESISTANCE, AC, junction to case (Note 4) RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF.
The PA94 is a high voltage, MOSFET operational amplifier designed as a low cost solution for driving continuous output currents up to 100mA and pulse currents up to 200mA into capacitive loads. The safe operating area (SOA) has no second breakdown limitations and can be observed for all load types 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. Isolating thermal washers (TW13) prevent arcing from pins to heatsink.
APPLICATIONS
♦ HIGH VOLTAGE INSTRUMENTATION ♦ PROGRAMMABLE POWER SUPPLIES UP