CIRRUS PA02_09

PA02PA02
• PA02A
• PA02A
P rr oo dd uu cc tt IPA02A
n n o v a tt ii oo nn FFrroomm
PPA02,
Power Operational Amplifiers
FEATURES
• 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
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
100K
+12
DESCRIPTION
.47µF 16K
RCL+
.27Ω
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
1K
PA02
.001µF
IN
.47µF
–12
.27Ω
2
RCL+
R1
R2
R5
R3
D1
Q1
R6
Q2
R4
Q4
6
OUT 3
R7
Q3
3
Q5
R8
Q7
R10
OUT
R15
A1
R12
R13
Q8
+VS
2
1
5
R9
3.2Ω
16W
RCL–
16K
4
Q6
–IN
8
CL+
1
4
TOP VIEW
5
+IN
6
7
–VS
8
CL–
RCL–
R14
D2
R11
7
PA02U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 20091
APEX − PA02UREVO
PA02 • PA02A
P r o d u c t I n n o v a t i o nF r o m
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
1000
3
+VS –3
–VS +5
100
103
100
4.5
350
30
±VS –4 ±VS –3
±VS –2 ±VS –1.2
5
.6
13
20
SOA
.004
100
10
±7
F > 60Hz
F < 60Hz
Meets full range specifications
PA02
TYP
–25
38V
5A
48W
±30V
–VS+2V to +VS–2V
300°C
150°C
–65 to +150°C
­–55 to +125°C
MAX MIN
PA02A
TYP
MAX
UNITS
±10
±1
±3
±50
*
±25
*
*
200
25
100
200
*
*
100
15
50
100
*
*
*
*
*
*
*
*
*
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
27
±19
*
40
*
*
*
*
1.9
2.4
30
2.1
*
*
2.6
*
*
*
+85
–55
+125
%
ns
%
V
mA
°C/W
°C/W
°C/W
°C
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.
7. The absolute maximum negative input voltage is equal to the negative power supply voltage plus 1V (-Vs + 1V).
CAUTION
2
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.
PA02U
PA02 • PA02A
P r o d u c t I n n o v a t i o nF r o m
T=TC
30
20
10
T=TA
0
150
2.5
TC = 25° to 85°C
2.0
1.5
±VO
1.0
.5
1
2
3
4
OUTPUT CURRENT, IO (A)
2.5
RCL = 0.3Ω
2.0
1.5
RCL = 0.62Ω
1.0
.5
0
–25
5
PHASE RESPONSE
0
50
0
25
75 100 125
CASE TEMPERATURE, TC (°C)
POWER RESPONSE
30
60
40
20
–90
–120
–150
0
–180
BIAS CURRENT
64
16
4
1
.25
.06
–15
40
5
45
65
85 105
25
CASE TEMPERATURE, TC (°C)
INPUT NOISE
35
30
25
20
15
10
10
PA02U
100
1K
10K
FREQUENCY, F (Hz)
.1M
–210
120
1
10
COMMON MODE REJECTION
100
80
60
40
20
1
1.6
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
QUIESCENT CURRENT
18
13
| +VS | + | –VS | = 30V
10
7.8
140
.2M
.5M .7M 1M
.3M
FREQUENCY, F (Hz)
POWER SUPPLY REJECTION
120
100
+VS
80
60
–VS
40
20
0
10
3
1.5
100
1K 10K .1M 1M
FREQUENCY, F(Hz)
1.3
1.2
1.1
2
.5
1.0
0
25
50
75
100 125
CASE TEMPERATURE, TC (°C)
AD
V
1m
NO
LO
1.5
1
10M
SETTLING TIME
2.5
1.4
.9
–25
23
6
.1M
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
TIME, t (µS)
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
COMMON MODE REJECTION, CMR (dB)
256
10
NORMALIZED QUIESCENT CURRENT, IQ (X)
1
POWER SUPPLY REJECTION, PSR (dB)
–60
PHASE, Ф (°)
80
OUTPUT VOLTAGE, VO (VP-P)
| +VS | + | –VS | = 36V
–30
OPEN LOOP GAIN, AOL (dB)
0
CURRENT LIMIT
3.0
3.0
100
–20
NORMALIZED BIAS CURRENT, IB (X)
25
50
75
100 125
TEMPERATURE, T (°C)
SMALL SIGNAL RESPONSE
120
INPUT NOISE VOLTAGE,en (nV/√Hz)
SATURATION VOLTAGE, VS –VO (V)
INTERNAL POWER DISSIPATION, P(W)
40
0
OUTPUT VOLTAGE SWING
3.5
CURRENT LIMIT, ILIM (A)
POWER DERATING
50
V
10m
NO
AD
LO
AD
0Ω LO
10mV 1
0
1
3
4
7
2
5
6
8
OUTPUT CHANGE FROM ZERO, VOLTS
3
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.Cirrus.com for design tools that help automate
tasks such as calculations for stability, internal power dissipation, current limit; heat
sink selection; Apex Precision Power’s complete Application Notes library; Technical
Seminar Workbook; and Evaluation Kits.
.1
W
m
.03
=
50
PO
W
=
PO
.003
=5
PO
W
.001
100 300
1K 3K 10K 30K .1M .3M
FREQUENCY, F (Hz)
PULSE RESPONSE
15
OUTPUT VOLTAGE, VO (V)
SAFE OPERATING AREA
.5
.01
VIN = ±1V, tr = 100ns
LOAD = 10Ω
10
5
0
–5
–10
–15
OUTPUT VOLTAGE, VO (V)
5
* 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.
VIN = ±.2V, tr = 50ns
.2
.1
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.
0
–.1
–.2
–.3
0
.5
1.0
TIME, t (µS)
1.5
LOADING EFFECTS
0
DELTA GAIN WITH LOAD, ∆A (dB)
3
4
2
TIME, t (µS)
PULSE RESPONSE
.3
4
1
0
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.
–.3
IO = 150mA
–.6
DEVICE MOUNTING
–.9
IO = 400mA
–1.2
–1.5
SOA
5.0
The SOA curves combine the
TC
4.0
=2
effect of all limits for this Power
5°C
T
C =
3.0
Op Amp. For a given application,
70
T
°C
C =
the direction and magnitude of
2.0
10
0° C
the output current should be calT
1.5
C =
culated or measured and checked
12
5°
C
against the SOA curves. This is
1.0
simple for resistive loads but more
0.7
TH
complex for reactive and EMF
ER
0.5
generating loads. The following
MA
L
guidelines may save extensive
0.3
analytical efforts:
0.2
1. Under transient conditions,
2
3
5
7
10
15 20 25 30 40
capacitive and dynamic* loads
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS –VO (V)
up to the following maximums
are safe:
CAPACITIVE LOAD
INDUCTIVE LOAD
ILIM = 2A
ILIM = 5A
ILIM = 2A
ILIM = 5A
±VS
18V
2mF
0.7mF
.2H
10mH
15V
10mF
2.2mF
.7H
25mH
10V
25mF
10mF
5H
50mH
E
s
AT
5m ND N
W
ST
t = CO DO
DY
SE AK
EA
E
ST
BR
DISTORTION, THD (%)
.3
GENERAL
HARMONIC DISTORTION
GAIN = 1
LOAD = 10Ω
OUTPUT CURRENT FROM +V OR –VS (A)
1
P r o d u c t I n n o v a t i o nF r o m
100
10K
1K
FREQUENCY, F (Hz)
.1M
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.
PA02U
P r o d u c t I n n o v a t i o nF r o m
PA02 • PA02A
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 [email protected]
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
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PA02U
5