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PDF PA01 Data sheet ( Hoja de datos )

Número de pieza PA01
Descripción POWER OPERATIONAL AMPLIFIERS
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MICROTECHNOLOGY
POWER OPERATIONAL AMPLIFIERS
PA01 • PA73
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
FEATURES
• LOW COST, ECONOMY MODEL — PA01
• SECOND SOURCEABLE — PA73
• HIGH OUTPUT CURRENT — Up to ±5A PEAK
• EXCELLENT LINEARITY — PA01
• HIGH SUPPLY VOLTAGE — Up to ±30V
• ISOLATED CASE — 300V
APPLICATIONS
• MOTOR, VALVE AND ACTUATOR CONTROL
• MAGNETIC DEFLECTION CIRCUITS UP TO 4A
• POWER TRANSDUCERS UP TO 20kHz
• TEMPERATURE CONTROL UP TO 180W
• PROGRAMMABLE POWER SUPPLIES UP TO 48V
• AUDIO AMPLIFIERS UP TO 50W RMS
DESCRIPTION
The PA01 and PA73 are high voltage, high output current
operational amplifiers designed to drive resistive, inductive
and capacitive loads. For optimum linearity, the PA01 has a
class A/B output stage. The PA73 has a simple class C output
stage (see Note 1) to reduce cost for motor control and other
applications where crossover distortion is not critical and to
provide interchangeability with type 3573 amplifiers. The safe
operating area (SOA) can be observed for all operating condi-
tions by selection of user programmable current limit resistors.
These amplifiers are internally compensated for all gain set-
tings. For continuous operation under load, a heatsink of
proper rating is recommended.
This hybrid integrated circuit utilizes thick film (cermet)
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 hermetically sealed and electrically isolated. The
use of compressible thermal washers and/or improper mount-
ing torque will void the product warranty. Please see “General
Operating Considerations”.
EXTERNAL CONNECTIONS
+VS
3
CL+
2 OUT
1
+IN 4
TOP VIEW
R CL+
IN 5
6
VS
7
N.C.
8
CL
R CL
OUTPUT
TYPICAL APPLICATION
VIN RIN
0/+5V
1N4148
+6V
CF
RCL +
PA01
.33
3W
RCL
30V
RF
.33
3W
F/V
0/5V
OPTO
PULSE
GEN.
M 24V
UNSYMMETRICAL SUPPLIES FOR EFFICIENCY
Unidirectional Optical Speed Control
The pulse output of a non-contact optical sensor drives a
voltage-to-frequency converter which generates feedback for
the op amp. With the loop closed in this manner, the op amp
corrects for any variations in the speed due to changing load.
Because of operation in only one direction, an unsymmetrical
supply is used to maximize efficiency of both power op amp
and power supply. High speed diodes at the input protect the
op amp from commutator noise which may be generated by
the motor.
EQUIVALENT SCHEMATIC
3
D1 * *
Q2A
Q2B
Q1*
Q3
2
*
Q4 * Q5
1
8
4
A1
5
*
Q6B
Q6A
C1
6
NOTE 1: * Indicates not used in PA73. Open base of Q2A connected to
output of A1.
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]

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