APEX PA73

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FEATURES
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•
•
•
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LOW COST, ECONOMY MODEL — PA01
HIGH OUTPUT CURRENT — Up to ±5A PEAK
EXCELLENT LINEARITY — PA01
HIGH SUPPLY VOLTAGE — Up to ±30V
ISOLATED CASE — 300V
APPLICATIONS
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•
•
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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
8-PIN TO-3
PACKAGE STYLE CE
TYPICAL APPLICATION
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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
conditions by selection of user programmable current limit
resistors. These amplifiers are internally compensated for all
gain settings. 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 interconnections 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 mounting torque will void the product warranty. Please see “General
Operating Considerations”.
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Unidirectional Optical Speed Control
EQUIVALENT SCHEMATIC
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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.
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EXTERNAL CONNECTIONS
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DESCRIPTION
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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 prodlit@apexmicrotech.com
1
PA01 • PA73
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PARAMETER
TEST CONDITIONS 2
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. power
BIAS CURRENT, initial
BIAS CURRENT, vs. temperature
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial
OFFSET CURRENT, vs. temperature
INPUT IMPEDANCE, common-mode
INPUT IMPEDANCE, differential
INPUT CAPACITANCE
COMMON MODE VOLTAGE RANGE3
COMMON MODE REJECTION, DC3
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C, VCM = VS –6V
GAIN
OPEN LOOP GAIN at 10Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
POWER BANDWIDTH
PHASE MARGIN
Full temp. range, full load
TC = 25°C, full load
TC = 25°C, IO = 4A, VO = 40VPP
Full temperature range
OUTPUT
VOLTAGE SWING3
VOLTAGE SWING3
VOLTAGE SWING3
CURRENT, peak
SETTLING TIME to .1%
SLEW RATE
CAPACITIVE LOAD, unity gain
CAPACITIVE LOAD, gain > 4
TC = 25°C, IO = 5A
Full temp. range, IO = 2A
Full temp. range, IO = 46mA
TC = 25°C
TC = 25°C, 2V step
TC = 25°C, RL = 2.5Ω
Full temperature range
Full temperature range
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
Full temperature range
TC = 25°C
THERMAL
RESISTANCE, AC, junction to case4
RESISTANCE, DC, junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
PA01
60V
5A
67W
±VS –3V
±VS
200°C
300°C
–65 to +150°C
–25 to +85°C
SUPPLY VOLTAGE, +VS to –VS
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common-mode
TEMPERATURE, junction1
TEMPERATURE, pin solder -10s
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
MIN
PA01
TYP
±VS–6
70
±5
±10
±35
±20
±15
±.05
±.02
±12
±.05
200
10
3
±VS–3
110
91
15
MIN
PA73
TYP
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
±12
±65
±50
±.4
±30
113
1
23
45
*
*
±VS–10 ±VS–5
±VS–6 ±VS–5
±VS–5
±5
2
1.0
2.6
±VS–8
*
*
*
*
±10
–25
±28
20
±28
50
1.9
2.4
30
25
2.1
2.6
+85
MAX
UNITS
±10
*
±200
mV
µV/°C
µV/V
µV/W
nA
nA/°C
nA/V
nA
nA/°C
MΩ
MΩ
pF
V
dB
±40
*
*
*
*
*
*
dB
MHz
kHz
°
*
*
V
V
V
A
µs
V/µs
nF
*
*
1
SOA
F > 60Hz
F < 60Hz
Meets full range specifications
MAX
PA73
68V
5A
67W
±VS –3V
±VS
200°C
300°C
–65 to +150°C
–25 to +85°C
*
*
*
*
*
2.6
±30
5
V
mA
*
*
*
*
*
*
°C/W
°C/W
°C/W
°C
*
NOTES: * The specification of PA73 is identical to the specification for PA01 in applicable column to the left.
1. Lo
achieve high MTTF.
2. The power supply voltage specified under the TYP rating applies unless otherwise noted as a test condition.
3. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to –VS.
4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
CAUTION
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or
subject to temperatures in excess of 850°C to avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
2
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TYPICAL PERFORMANCE
GRAPHS
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PA01 • PA73
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
3
OPERATING
CONSIDERATIONS
PA01 • PA73
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification
interpretation. Visit www.apexmicrotech.com for design tools
that help automate tasks such as calculations for stability, internal power dissipation, current limit and heat sink selection.
The "Application Notes" and "Technical Seminar" sections
contain a wealth of information on specific types of applications.
Package outlines, heat sinks, mounting hardware and other
accessories are located in the "Packages and Accessories"
section. Evaluation Kits are available for most Apex product
models, consult the "Evaluation Kit" section for details. For
the most current version of all Apex product data sheets, visit
www.apexmicrotech.com.
1. For sine wave outputs, use Power Design1 to plot a load
line. Make sure the load line does not cross the 0.5ms limit
and that excursions beyond any other second breakdown
line do not exceed the time label, and have a duty cycle of
no more than 10%.
For other waveform outputs, manual load line plotting
is recommended. Applications Note 22, SOA AND LOAD
LINES, will be helpful. A Spice type analysis can be very
useful in that a hardware setup often calls for instruments
or amplifiers with wide common mode rejection ranges.
2. EMF generating or reactive load and short circuits to the
supply rail or shorts to common are safe if the current limits
are set as follows at TC = 85°C.
SAFE OPERATING AREA (SOA)
The output stage of most power amplifiers has three distinct
limitations:
1. The current handling capability of the transistor geometry
and the wire bonds.
2. The second breakdown effect which occurs whenever the
simultaneous collector current and collector-emitter voltage
exceeds specified limits.
3. The junction temperature of the output transistors.
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SHORT TO ±VS
C, L, OR EMF LOAD
SHORT TO
COMMON
34V
30V
25V
20V
15V
.58A
.46A
.61A
.86A
1.3A
1.1A
1.4A
1.7A
2.1A
2.9A
3. The output stage is protected against occaisional transient
flyback. However, for protection against sustained, high
energy flyback, external fast-recovery diodes should be
used.
CURRENT LIMIT
Proper operation requires the use of two current limit resistors, connected as shown, in the external connection diagram.
The minimum value for RCL is 0.12 ohm; however, for optimum
reliability it should be set as high as possible. Refer to the
“General Operating Considerations” section of the handbook
for current limit adjust details.
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The SOA curves combine the effect of these limits. For a
given application, the direction and magnitude of the output
current should be calculated or measured and checked against
the SOA curves. This is simple for resistive loads but more
complex for reactive and EMF generating loads.
1
Note 1. Power Design is a self-extracting Excel spreadsheet
available free from www.apexmicrotech.com
This data
sheet has been carefullyCORPORATION
checked and is believed
to beNORTH
reliable, however,
no responsibility
is assumed for
possible inaccuracies
omissions.
All specificationsHOTLINE:
are subject to1 change
notice.
APEX
MICROTECHNOLOGY
• 5980
SHANNON
ROAD • TUCSON,
ARIZONA
85741 •orUSA
• APPLICATIONS
(800)without
546-2739
4
PA01-73U REV R MARCH 2005
© 2005 Apex Microtechnology Corp.