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P r o d u c t I n n o v a t i o n F r o m PA92 PA92U 1
FEATURES
♦ HIGH VOLTAGE — 400V (±200V) ♦ LOW QUIESCENT CURRENT — 10mA ♦ HIGH OUTPUT CURRENT — 4A ♦ PROGRAMMABLE CURRENT LIMIT
APPLICATIONS
♦ PIEZOELECTRIC POSITIONING ♦ HIGH VOLTAGE INSTRUMENTATION ♦ ELECTROSTATIC TRANSDUCERS ♦ PROGRAMMABLE POWER SUPPLIES UP TO 390V Q1 Q2 R1 R2 C1 R3 CC1 CC2 R8 R9 Q15 R11 R12 Q16 Q12 ILIM OUT Q17 R10 Q13 Q11 +VS –IN +IN –VS IQ Q14BQ14A High Voltage Power Operational Amplifiers PA92P r o d u c t I n n o v a t i o n F r o m
DESCRIPTION
The PA92 is a high voltage, low quiescent current MOSFET operational amplifier designed as a low cost solution for driving continuous output currents up to 4A and pulse currents up to 7A. The safe operating area (SOA) has no second breakdown limitations and can be observed for all type loads by choosing an appropri- ate current limiting resistor. The MOSFET output stage is biased AB for linear operation. External compensa- tion provides flexibility in choosing bandwidth and slew rate for the application. Apex Precision Power’s Power SIP package uses a minimum of board space allowing for high density circuit boards. The Power SIP package is electrically isolated. EQUIVALENT SCHEMATIC Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved)http://www.cirrus.com JUN 2009 APEX − PA92UREVK
P r o d u c t I n n o v a t i o n F r o m PA92
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CAUTION The PA92 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 in excess of 850°C to avoid generating toxic fumes. Parameter Test Conditions Min Typ Max Units INPUT OFFSET VOLTAGE, initial 2 10 mV OFFSET VOLTAGE vs. temperature Full temperature range 15 50 µV/°C OFFSET VOLTAGE vs. supply 10 25 µV/V OFFSET VOLTAGE vs. time 75 µV/kh BIAS CURRENT, initial 200 2000 pA BIAS CURRENT vs. supply 4 pA/V OFFSET CURRENT, initial 50 500 pA INPUT IMPEDANCE, DC 1011 Ω INPUT CAPACITANCE 4 pF COMMON MODE VOLTAGE RANGE (Note 3) ±VS Ŧ 15 V COMMON MODE REJECTION, DC VCM = ±90V 80 98 dB NOISE 100KHz bandwidth, R S = 1KΩ, CC = 10pF 1 µV RMS GAIN OPEN LOOP @ 15Hz RL = 2KΩ, CC = 10pF 94 111 dB GAIN BANDWIDTH PRODUCT @ 1MHz RL = 2KΩ, CC = 10pF 18 MHz POWER BANDWIDTH RL = 2KΩ, CC = 10pF 30 kHz PHASE MARGIN Full temperature range 60 ° OUTPUT VOLTAGE SWING (Note 3) IO = 4A ±VS Ŧ 12 ±VS Ŧ 10 V CURRENT, continuous 4 A SLEW RATE, A V = 100 CC = 10pF 50 V/µS CHARACTERISTICS AND SPECIFICATIONS AbSOLUTE MAxIMUM RATINGS Parameter Symbol Min Max Units SUPPLY VOLTAGE, +VS to -VS 400 V OUTPUT CURRENT, source, sink, peak, within SOA 7 A POWER DISSIPATION, continuous @ TC = 25°C 80 W INPUT VOLTAGE, differential -20 20 V INPUT VOLTAGE, common mode -VS VS V TEMPERATURE, pin solder, 10s max. 260 °C TEMPERATURE, junction (Note 2) 150 °C TEMPERATURE RANGE, storage −40 85 °C OPERATING TEMPERATURE RANGE, case −25 85 °C SPECIFICATIONS
P r o d u c t I n n o v a t i o n F r o m PA92 PA92U 3 NOTES: 1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Condi - tions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25°C). 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. 3. +V S and –VS denote the positive and negative power supply rail respectively. 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. Parameter Test Conditions Min Typ Max Units CAPACITIVE LOAD, A V = +1 Full temperature range 1 nF SETTLING TIME to 0.1% CC = 10pF, 2V step 1 µS RESISTANCE, no load 10 Ω POWER SUPPLY VOLTAGE (Note 5) ±50 ±150 ±200 V CURRENT, quiescent 10 14 mA THERMAL RESISTANCE, AC, junction to case (Note 4) Full temp range, F > 60Hz 1 °C/W RESISTANCE, DC, junction to case Full temp range, F < 60Hz 1.5 °C/W RESISTANCE, junction to air Full temp range 30 °C/W TEMPERATURE RANGE, case Meets full range specifications -25 +85 °C 1 2 3 4 5 6 7 8 9 10 –IN +IN RCL +Vs –Vs TO LOAD AND FEEDBACK 11 12 Rc Cc (See text.) * Bypassing required. IQ PATENTED 12-pin SIP PACKAGE STYLE DP Formed leads available See package style EE ExTERNAL CONNECTIONS PHASE COMPENSATION GAIN CC* RC ≥1 150pF 100Ω ≥2 100pF 100Ω ≥3 47pF 0Ω ≥12 10pF 0Ω C Never to be <10pF. CC to be rated for the full supply voltage +V to -Vs. Use ceramic NPO (COG) type.
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FREQUENCY F (Hz) 135 PHASE RESPONSE PHASE, Ф (°) 10 100 10K 100K FREQUENCY, F (Hz) INPUT NOISE VOLTAGE, V (nV√Hz) 100K FREQUENCY, F (Hz) –10 SMALL SIGNAL RESPONSE OPEN LOOP GAIN, A (dB) 0 3 4 OUTPUT CURRENT, IO (A) 8.0 OUTPUT VOLTAGE SWING 7.5 7.0 8.5 RESISTOR VALUE, RCL (Ω) CURRENT LIMIT CURRENT LIMIT, ILIM (A) EXT. COMPENSATION CAPACITOR, CC (pF) SLEW RATE SLEW RATE, (V/μS) 100 300 FREQUENCY, F (Hz) DISTORTION, (%) 25 50 100 CASE TEMPERATURE, TC (°C) 1.2 NORMALIZED QUIESCENT CURRENT NORMALIZED QUIESCENT CURRENT, IQ (X) 1.0 0.2 0.8 INPUT NOISE VOLTAGE VOLTAGE DROP FROM SUPPLY, VS – VO (V) 225 .001 1M 10M 270 180 125 1.4 1.6 6.5 .01 1M 10M CC = 150pF CC = 100pF CC = 47pF CC = 10pF CC = 150pF CC = 100pF CC = 47pF CC = 10pF 0 25 50 75 100 125 CASE TEMPERATURE, TC (°C) POWER DERATING INTERNAL POWER DISSIPATION, P(W) PO = 62W PO = 20W PO = 1W POWER RESPONSE FREQUENCY, F (Hz) OUTPUT VOLTAGE, VO(VP-P) 10K 100K 1M 100 400 CC = 10pF CC = 47pF CC = 100pF CC = 150pF 20060
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The PA92 is externally compensated and performance can be tailored to the application. Use the graphs of small signal response and power response as a guide. The compensation capacitor CC must be rated at 500V working voltage. An NPO capacitor is recommended. The compensation network CCRC must be mounted closely to the am- plifier pins 4 and 5 to avoid spurious oscillation. QUIESCENT CURRENT REDUCTION When pin 3 (IQ) is shorted to pin 5 (CC2) the AB biasing of the output stage is disabled. This lowers quiescent power but also raises distortion since the output stage is then class C biased. The output stage bias current is nominally set at 1mA. Pin 3 may be left open if not used. CONTACTING CIRRUS LOGIC SUPPORT For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact tucson.support@cirrus.com. International customers can also request support by contacting their local Cirrus Logic Sales Representative. To find the one nearest to you, go to www.cirrus.com IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives con- sent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP- ERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PROD- UCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUS- TOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.