APEX PA02

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FEATURES
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HIGH POWER BANDWIDTH — 350kHz
HIGH SLEW RATE — 20V/µs
FAST SETTLING TIME — 600ns
LOW CROSSOVER DISTORTION — Class A/B
LOW INTERNAL LOSSES — 1.2V at 2A
HIGH OUTPUT CURRENT — ±5A PEAK
LOW INPUT BIAS CURRENT — FET Input
ISOLATED CASE — 300 VDC
8-PIN TO-3
PACKAGE STYLE CE
APPLICATIONS
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•
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TYPICAL APPLICATION
MOTOR, VALVE AND ACTUATOR CONTROL
MAGNETIC DEFLECTION CIRCUITS UP TO 5A
POWER TRANSDUCERS UP TO 350 kHz
AUDIO AMPLIFIERS UP TO 30W RMS
Vehicular Sound System Power Stage
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DESCRIPTION
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The PA02 and PA02A are wideband, high output current
operational amplifiers designed to drive resistive, inductive
and capacitive loads. Their complementary “collector output”
stage can swing close to the supply rails and is protected
against inductive kickback. For optimum linearity, the output
stage is biased for class A/B operation. The safe operating
area (SOA) can be observed for all operating conditions by
selection of user programmable, current limiting resistors
(down to 10mA). Both amplifiers are internally compensated
but are not recommended for use as unity gain followers. For
continuous operation under load, mounting on a heatsink of
proper rating is recommended.
These hybrid integrated circuits utilize 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. Isolation washers are not recommended. The use of compressible thermal washers and/or improper mounting torque will
void the product warranty. Please see “General Operating
Considerations”.
LOW INTERNAL LOSS MAXIMIZES EFFICIENCY
When system voltages are low and power is at a premium,
the PA02 is a natural choice. The circuit above utilizes not only
the feature of low internal loss of the PA02, but also its very
low distortion level to implement a crystal clear audio amplifier
suitable even for airborne applications. This circuit uses AC
coupling of both the input signal and the gain circuit to render
DC voltage across the speaker insignificant. The resistor and
capacitor across the inputs form a stability enhancement network. The 0.27 ohm current limit resistors provide protection
in the event of an output short circuit.
EQUIVALENT SCHEMATIC
EXTERNAL CONNECTIONS
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
1
PA02 • PA02A
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to –VS
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal1
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder - 10s
TEMPERATURE, junction1
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
SPECIFICATIONS
PARAMETER
TEST CONDITIONS 2, 6
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, DC
INPUT CAPACITANCE
COMMON MODE VOLT. RANGE5, Pos.
COMMON MODE VOLT. RANGE5, Neg.
COMMON MODE REJECTION, DC
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
TC = 25°C
TC = 85°C
TC = 25°C
TC = 25°C
TC = 85°C
TC = 25°C
TC = 25°C
Full temperature range
Full temperature range
Full temperature range
GAIN
OPEN LOOP GAIN at 10Hz
OPEN LOOP GAIN at 10Hz
GAIN BANDWIDTH PRODUCT at 1MHz
POWER BANDWIDTH
PHASE MARGIN
TC = 25°C, 1kΩ load
Full temp. range, 10kΩ load
TC = 25°C, 10Ω load
TC = 25°C, 10Ω load
Full temp. range, 10Ω load
OUTPUT
VOLTAGE SWING3
VOLTAGE SWING3
CURRENT, peak
SETTLING TIME to .1%
SLEW RATE
CAPACITIVE LOAD
HARMONIC DISTORTION
SMALL SIGNAL rise/fall time
SMALL SIGNAL overshoot
TC = 25°C, IO = 5A, RCL = .08Ω
Full temp. range, IO = 2A
TC = 25°C
TC = 25°C, 2V step
TC = 25°C
Full temp. range, AV > 10
PO = .5W, F = 1kHz, RL = 10Ω
RL = 10Ω, AV = 1
RL = 10Ω, AV = 1
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
MIN
±5
±10
±10
±6
50
.01
25
+VS –6
–VS +6
70
86
MAX
±7
–25
MIN
±10
±50
*
*
*
103
100
4.5
350
30
*
*
*
*
*
±15
27
±19
40
1.9
2.4
30
2.1
2.6
+85
MAX
UNITS
±3
±25
*
*
*
*
*
mV
µV/°C
µV/V
µV/W
pA
pA/°C
pA/V
pA
pA/°C
GΩ
pF
V
V
dB
*
*
*
*
*
dB
dB
MHz
kHz
°
*
*
V
V
A
µs
V/µs
*
15
100
100
1000
3
+VS –3
–VS +5
100
PA02A
TYP
±1
*
*
*
25
200
200
±VS –4 ±VS –3
±VS –2 ±VS –1.2
5
.6
13
20
SOA
.004
100
10
F > 60Hz
F < 60Hz
Meets full range specifications
PA02
TYP
38V
5A
48W
±VS –5V
±VS –2V
300°C
150°C
–65 to +150°C
–55 to +125°C
*
–55
100
*
50
*
*
*
*
*
*
*
%
ns
%
*
*
*
*
V
mA
*
*
*
*
*
°C/W
°C/W
°C/W
°C
+125
NOTES: * The specification of PA02A is identical to the specification for PA02 in applicable column to the left.
1. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to
achieve high MTTF.
2. The power supply voltage for all specifications is the TYP rating 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.
5. Exceeding CMV range can cause the output to latch.
6. Full temperature specifications are guaranteed but not 100% tested.
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
PA02 • PA02A
TYPICAL PERFORMANCE
GRAPHS
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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
PA02 • PA02A
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; heat sink selection; Apex’s complete Application Notes library; Technical Seminar
Workbook; and Evaluation Kits.
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SAFE OPERATING AREA
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* If the inductive load is driven near steady state conditions, allowing the output
voltage to drop more than 8V below the supply rail with ILIM = 5A, or 17V below the
supply rail with ILIM = 2A while the amplifier is current limiting, the inductor should
be capacitively coupled or the current limit must be lowered to meet SOA criteria.
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2. The amplifier can handle any EMF generating or reactive load and short circuits
to the supply rails or shorts to common if the current limits are set as follows at
TC = 85°C.
SHORT TO ±VS
SHORT TO
C, L OR EMF LOAD
COMMON
±VS
18V
.5A
1.7A
15V
.7A
2.8A
10V
1.6A
4.2A
These simplified limits may be exceeded with further analysis using the operating
conditions for a specific application.
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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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DEVICE MOUNTING
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The SOA curves combine the
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effect of all limits for this Power
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Op Amp. For a given application,
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the direction and magnitude of
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the output current should be cal��
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culated or measured and checked
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against the SOA curves. This is
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simple for resistive loads but more
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complex for reactive and EMF
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generating loads. The following
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guidelines may save extensive
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analytical efforts:
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1. Under transient conditions,
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capacitive and dynamic* loads
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up to the following maximums
are safe:
CAPACITIVE LOAD
INDUCTIVE LOAD
±VS
ILIM = 2A
ILIM = 5A
ILIM = 2A
ILIM = 5A
18V
2mF
0.7mF
.2H
10mH
15V
10mF
2.2mF
.7H
25mH
10V
25mF
10mF
5H
50mH
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GENERAL
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The case (mounting flange) is electrically isolated and should be mounted directly to a
heatsink with thermal compound. Screws with Belville spring washers are recommended
to maintain positive clamping pressure on heatsink mounting surfaces. Long periods
of thermal cycling can loosen mounting screws and increase thermal resistance.
Since the case is electrically isolated (floating) with respect to the internal circuits it
is recommended to connect it to common or other convenient AC ground potential.
This data
sheet has been carefullyCORPORATION
checked and is believed
to be NORTH
reliable, however,
no responsibility
is assumed for
possible inaccuracies
omissions.
All specifications HOTLINE:
are subject to1change
without
notice.
APEX
MICROTECHNOLOGY
• 5980
SHANNON
ROAD • TUCSON,
ARIZONA
85741 •orUSA
• APPLICATIONS
(800)
546-2739
4
PA02U REV. L FEBRUARY 1998
© 1998 Apex Microtechnology Corp.