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PA33

更新时间： 2024-09-22 23:26:07
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4页 59K
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Operational Amplifier

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PA33 数据手册

 浏览型号PA33的Datasheet PDF文件第2页浏览型号PA33的Datasheet PDF文件第3页浏览型号PA33的Datasheet PDF文件第4页 
POWER OPERATIONAL AMPLIFIERS  
PA33 • PA33A  
M
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T
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C
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HTTP:/ / WWW. APEXMICROTECH. COM (800) 546-APEX (800) 546-2739  
FEATURES  
• HIGH INTERNAL DISSIPATION — 250 WATTS  
• HIGH VOLTAGE, HIGH CURRENT — 100V, 30A  
• HIGH SLEW RATE — 100V/ µS  
• 4 WIRE CURRENT LIMIT SENSING  
• LOW DISTORTION  
• EXTERNAL SHUTDOWN CONTROL  
• OPTIONAL BOOST VOLTAGE INPUTS  
• EVALUATION KIT — SEE EK04  
APPLICATIONS  
• LINEAR AND ROTARY MOTOR DRIVES  
• SONAR TRANSDUCER DRIVER  
• YOKE/ MAGNETIC FIELD EXCITATION  
• PROGRAMMABLE POWER SUPPLIES TO ±45V  
• AUDIO UP TO 500W  
The DIP04 12-pin package (see Package Outlines) is  
hermeticallysealedandisolatedfromtheinternalcircuits. The  
use of compressible thermal washers and/or improper mount-  
ing torque will void the product warranty. Please see “General  
Operating Considerations”.  
DESCRIPTION  
TYPICAL APPLICATION  
The PA33 is a high voltage MOSFET power operational  
amplifier that extends the performance limits of power ampli-  
fiers in slew rate and power bandwidth, while maintaining high  
current and power dissipation ratings.  
The high power bandwidth of the PA33 allows driving sonar  
transducersviaaresonantcircuitincludingthetransducerand  
a matching transformer. The load circuit appears resistive to  
the PA33. Control logic turns off the amplifier's output during  
shutdown.  
ThePA33isahighlyflexibleamplifier. Theshutdowncontrol  
feature allows the output stage to be turned off for standby  
operation or load protection during fault conditions. Boost  
voltage inputs allow the small signal portion of the amplifier to  
operate at a higher voltage than the high current output stage.  
The amplifier is then biased to achieve close linear swings to  
the supply rails at high currents for extra efficient operation.  
Externalcompensationtailorsslewrateandbandwidthperfor-  
mance to user needs. A four wire sense technique allows  
precision current limiting without the need to consider internal  
or external milliohm parasitic resistance in the output line. The  
output stage is protected by thermal limiting circuits above  
junction temperatures of 175°C.  
R
f
CONTROL  
LOGIC  
R
ULTRA-  
SONIC  
DRIVE  
i
1
2
12  
7
PA33  
R
CL  
11  
10  
TUNED  
TRANSFORMER  
EQUIVALENT SCHEMATIC  
SHUTDOWN  
12  
8
EXTERNAL CONNECTIONS  
+Vs  
9
–INPUT  
SHUTDOWN  
D1  
4
+VBOOST  
Q8  
1
12  
11  
10  
9
+INPUT  
CURRENT LIMIT  
Q1  
Q13  
Q4  
2
Q5  
COMP  
D6  
D9  
Q12  
Q16  
CURRENT LIMIT  
+VBOOST  
3
COMP  
3
TOP  
VIEW  
OUT  
7
R C  
CC  
D5  
Q18  
4
5
6
Q10  
Q22  
COMP  
–VBOOST  
Q14  
ILIM  
11  
8
*
+SUPPLY  
Q17  
D20  
7
–IN  
1
OUTPUT  
10  
ILIM  
*
–SUPPLY  
Q24  
Q25  
D19  
Q21  
BIAS  
PHASE COMPENSATION  
+IN  
2
Q29  
Gain  
1
>3  
≥10  
CC  
RC  
D27  
D31  
470pF  
220pF  
82pF  
120Ω  
120Ω  
120Ω  
Q30  
Q33  
D4  
–VBOOST  
5
CC RATED FOR FULL SUPPLY VOLTAGE  
6 –Vs  
*See BOOST OPERATION paragraph.  
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com  
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