ETC PA13A

POWER OPERATIONAL AMPLIFIER
PA13 • PA13A
HTTP://WWW.APEXMICROTECH.COM
M I C R O T E C H N O L O G Y
(800) 546-APEX
(800) 546-2739
FEATURES
•
•
•
•
•
LOW THERMAL RESISTANCE — 1.1° C/W
CURRENT FOLDOVER PROTECTION
EXCELLENT LINEARITY — Class A/B Output
WIDE SUPPLY RANGE — ±10V to ±45V
HIGH OUTPUT CURRENT — Up to ±15A Peak
APPLICATIONS
•
•
•
•
•
•
MOTOR, VALVE AND ACTUATOR CONTROL
MAGNETIC DEFLECTION CIRCUITS UP TO 10A
POWER TRANSDUCERS UP TO 100kHz
TEMPERATURE CONTROL UP TO 360W
PROGRAMMABLE POWER SUPPLIES UP TO 90V
AUDIO AMPLIFIERS UP TO 120W RMS
EQUIVALENT SCHEMATIC
12
Q2A
11
D1
Q2B
10
9
Q1
DESCRIPTION
Q3
The PA13 is a state of the art high voltage, very high output
current operational amplifier designed to drive resistive, inductive and capacitive loads. For optimum linearity, especially
at low levels, the output stage is biased for class A/B operation
using a thermistor compensated base-emitter voltage multiplier circuit. The safe operating area (SOA) can be observed
for all operating conditions by selection of user programmable current limiting resistors. 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 12-pin power
SIP package is electrically isolated.
TYPICAL APPLICATION
+73V
47µF
RCL+
11,12
9,10 .2 Ω
2
2.5VP-P
1
PA13
7,8
5,6
.2 Ω
.1µF
47µF
–22V
7.8mH
4Ω
5Ap-p
RD
2K
1K
HIGH CURRENT ASYMMETRICAL SUPPLY
8
2
Q6B
A1
Q6A
1
C1
5
6
POWER RATING
Not all vendors use the same method to rate the power
handling capability of a Power Op Amp. APEX rates the
internal dissipation, which is consistent with rating methods
used by transistor manufacturers and gives conservative
results. Rating delivered power is highly application dependent and therefore can be misleading. For example, the 135W
internal dissipation rating of the PA13 could be expressed as
an output rating of 260W for audio (sine wave) or as 440W if
using a single ended DC load. Please note that all vendors rate
maximum power using an infinite heatsink.
APEX has eliminated the tendency of class A/B output
stages toward thermal runaway and thus has vastly increased
amplifier reliability. This feature, not found in most other Power
Op Amps, was pioneered by APEX in 1981 using thermistors
which assure a negative temperature coefficient in the quiescent current. The reliability benefits of this added circuitry far
outweigh the slight increase in component count.
EXTERNAL CONNECTIONS
50pF
L* 1
t
7
CF
RF
YOKE DRIVER: –V =
Q5
Q4
THERMAL STABILITY
.1µF
3
RCL–
3
4
1
2
3
4
5
6
Package: SIP03
7
8
9
10
11
12
F.O.
RS
.5 Ω
–R CL
–IN
+IN
+R CL
–VS
–CL
+CL
+VS
OUTPUT
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PA13
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PA13
TEST CONDITIONS 2, 5
PARAMETER
PA13/PA13A
100V
15A
135W
±VS –3V
±VS
300°C
175°C
–65 to +150°C
–55 to +125°C
SUPPLY VOLTAGE, +Vs to –Vs
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder -10s
TEMPERATURE, junction1
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
MIN
TYP
PA13A
MAX
MIN
TYP
MAX
UNITS
±3
±40
*
*
*
±1
*
*
*
±10
*
*
±5
*
*
*
*
*
mV
µV/°C
µV/V
µV/W
nA
pA/°C
pA/V
nA
pA/°C
MΩ
pF
V
dB
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 VOLTAGE RANGE3
COMMON MODE REJECTION, DC
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
Full temperature range
±VS –5
Full temp. range, VCM = ±VS –6V
74
±2
±6
±10
±65
±30 ±200
±20
±12
±30
±50 ±500
±10
±12
±30
±50
200
3
±VS –3
100
±20
*
±10
GAIN
OPEN LOOP GAIN at 10Hz
OPEN LOOP GAIN at 10Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
POWER BANDWIDTH
PHASE MARGIN
TC = 25°C, 1KΩ load
Full temp. range, 8Ω load
TC = 25°C, 8Ω load
TC = 25°C, 8Ω load
Full temp. range, 8Ω load
96
13
110
108
4
20
20
*
*
*
*
*
*
*
dB
dB
MHz
kHz
°
OUTPUT
VOLTAGE SWING3
VOLTAGE SWING3
VOLTAGE SWING3
CURRENT, peak
SETTLING TIME to .1%
SLEW RATE
CAPACITIVE LOAD
CAPACITIVE LOAD
TC = 25°C, PA13 = 10A, PA13A = 15A
TC = 25°C, IO = 5A
Full temp. range, IO = 80mA
TC = 25°C
TC = 25°C, 2V step
TC = 25°C
Full temperature range, AV = 1
Full temperature range, AV > 10
±VS –6
±VS –5
±VS–5
10
2.5
*
*
*
15
2
4
*
*
*
1.5
SOA
*
*
V
V
V
A
µs
V/µs
nF
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
Full temperature range
TC = 25°C
±10
±40
25
±45
50
.6
.9
30
.7
1.1
*
*
*
*
*
V
mA
*
*
*
*
*
°C/W
°C/W
°C/W
°C
THERMAL
RESISTANCE, AC, junction to case4
RESISTANCE, DC, junction to case
RESISTANCE, DC, junction to air
TEMPERATURE RANGE, case
TC = –55 to +125°C, F > 60Hz
TC = –55 to +125°C
TC = –55 to +125°C
Meets full range specification
–25
+85
*
*
NOTES: * The specification of PA13A is identical to the specification for PA13 in the 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 tests is ±40, 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. Full temperature range specifications are guaranteed but not 100% tested.
CAUTION
The exposed substrate contains beryllia (BeO). 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
PA13
POWER DERATING
80
60
PA13
40
20
0
20 40 60 80 100 120 140
CASE TEMPERATURE, T (°C)
0
2.2
15.0
CURRENT LIMIT, I LIM (A)
100
1.9
1.6
1.3
1.0
.7
80
–60
40
–120
–150
0
–180
–20
1
–210
PULSE RESPONSE
8
OUTPUT VOLTAGE, VO (V)
100
80
60
40
20
VIN = ±5V, t r = 100ns
6
4
2
0
-2
-4
-6
-8
0
10 100 1K 10K .1M
FREQUENCY, F (Hz)
1
1
HARMONIC DISTORTION
.1
=
10
0m
4 6
8 10 12
TIME, t (µs)
W
PO
W
=4
0W
=
12
PO
300 1K
3K 10K 30K .1M
FREQUENCY, F (Hz)
POWER RESPONSE
| +VS | + | –VS | = 100V
68
46
32
| +VS | – | –VS | = 80V
22
15
| +VS | + | –VS | = 30V
10
6.8
4.6
10K
1.2
1.0
.8
TC
C
= –25°
°C
T C = 25
5 °C
TC = 8
5°C
T C = 12
.6
.4
50
60
70
80 90 100
40
TOTAL SUPPLY VOLTAGE, VS (V)
20K 30K
50K 70K .1M
FREQUENCY, F (Hz)
INPUT NOISE
100
70
50
40
30
20
10
10
QUIESCENT CURRENT
1.4
PO
.01
.003
100
2
1.6
.3
.03
0
1M
AV =10
VS = ±37V
RL = 4Ω
VO = –2
4V
0
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, TC (°C)
10 100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
COMMON MODE REJECTION
120
3
DISTORTION, (%)
1
10 100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
VO =
24V
VO = 0
5.0
2.5
=0
100
–90
20
VO
RCL = .18 Ω, RFO = 0
7.5
OUTPUT VOLTAGE, VO (VPP )
–30
PHASE, Φ (°)
100
∞
10.0
PHASE RESPONSE
0
NORMALIZED, IQ (X)
COMMON MODE REJECTION, CMR (dB)
OPEN LOOP GAIN, A (dB)
SMALL SIGNAL RESPONSE
RCL = .06 Ω,RFO =
12.5
.4
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, TC (°C)
120
60
CURRENT LIMIT
17.5
INPUT NOISE VOLTAGE, VN (nV/ ÷ Hz)
120
BIAS CURRENT
2.5
VOLTAGE DROP FROM SUPPLY (V)
140
NORMALIZED BIAS CURRENT, I B (X)
INTERNAL POWER DISSIPATION, P(W)
TYPICAL PERFORMANCE
GRAPHS
100
10K
1K
FREQUENCY, F (Hz)
.1M
OUTPUT VOLTAGE SWING
6
5
–V0
4
3
+V0
2
1
0
3
6
9
12
OUTPUT CURRENT, I O (A)
15
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]
OPERATING
CONSIDERATIONS
PA13
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; heat sink selection; Apex’s complete Application
Notes library; Technical Seminar Workbook; and Evaluation Kits.
SAFE OPERATING AREA (SOA)
15
t=0
.5m
EA
C
N stat
O W dy
K D tea
s
e
1
.8
.6
.4
10
SHORT TO
COMMON
45V
40V
35V
30V
25V
20V
15V
.43A
.65A
1.0A
1.7A
2.7A
3.4A
4.5A
3.0A
3.4A
3.9A
4.5A
5.4A
6.7A
9.0A
These simplified limits may be exceeded with further analysis using the operating conditions for a specific application.
CURRENT LIMITING
Refer to Application Note 9, "Current Limiting", for details of both
fixed and foldover current limit operation. Visit the Apex web site
at www.apexmicrotech.com for a copy of Power_design.exe which
plots current limits vs. steady state SOA. Beware that current limit
should be thought of as a +/–20% function initially and varies about
2:1 over the range of –55°C to 125°C.
For fixed current limit, leave pin 4 open and use equations 1 and 2.
s
ms
t=1
85°
BR
AL
SHORT TO ±VS
C, L, OR EMF LOAD
RCL = 0.65/LCL
ICL = 0.65/RCL
s
Tc=
C
1m
2
1.5
RM
ND
THE
3
25°
CO
Tc=
4
t=
10
8
6
SE
OUTPUT CURRENT FROM +V OR –V (A)
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.
±VS
Where:
ICL is the current limit in amperes.
RCL is the current limit resistor in ohms.
For certain applications, foldover current limit adds a slope to
the current limit which allows more power to be delivered to the
load without violating the SOA. For maximum foldover slope,
ground pin 4 and use equations 3 and 4.
0.65 + (Vo * 0.014)
15
20
25
30 35 40
50 60 70 80 90
ICL =
(3)
RCL
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V –V (V)
The SOA curves combine the effect of all limits for this Power Op
Amp. 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. However, the
following guidelines may save extensive analytical efforts.
1. Capacitive and dynamic* inductive loads up to the following
maximum are safe with the current limits set as specified.
±VS
50V
40V
35V
30V
25V
20V
15V
(1)
(2)
CAPACITIVE LOAD
ILIM = 5A
ILIM = 10A
200µF
500µF
2.0mF
7.0mF
25mF
60mF
150mF
125µF
350µF
850µF
2.5mF
10mF
20mF
60mF
INDUCTIVE LOAD
ILIM = 5A ILIM = 10A
5mH
15mH
50mH
150mH
500mH
1,000mH
2,500mH
2.0mH
3.0mH
5.0mH
10mH
20mH
30mH
50mH
*If the inductive load is driven near steady state conditions, allowing the output
voltage to drop more than 12.5V below the supply rail with ILIM = 10A or 27V below
the supply rail with ILIM = 5A while the amplifier is current limiting, the inductor
must be capacitively coupled or the current limit must be lowered to meet SOA
criteria.
2. The amplifier can handle any EMF generating or reactive load
and short circuits to the supply rail or common if the current
limits are set as follows at TC = 25°C:
0.65 + (Vo * 0.014)
RCL =
(4)
ICL
Where:
Vo is the output voltage in volts.
Most designers start with either equation 1 to set RCL for the
desired current at 0v out, or with equation 4 to set RCL at the
maximum output voltage. Equation 3 should then be used to plot
the resulting foldover limits on the SOA graph. If equation 3 results
in a negative current limit, foldover slope must be reduced. This
can happen when the output voltage is the opposite polarity of the
supply conducting the current.
In applications where a reduced foldover slope is desired, this
can be achieved by adding a resistor (RFO) between pin 4 and
ground. Use equations 4 and 5 with this new resistor in the circuit.
0.65 + Vo * 0.14
10.14 + RFO
ICL =
(5)
RCL
0.65 + Vo * 0.14
10.14 + RFO
RCL =
(6)
ICL
Where:
RFO is in K ohms.
This data
sheet has been carefully checked
and is believed
to be reliable,
however,
no responsibility
assumed forARIZONA
possible inaccuracies
omissions.
All specifications are
subject to change
without
notice.
APEX
MICROTECHNOLOGY
CORPORATION
• 5980
NORTH
SHANNON
ROAD •isTUCSON,
85741 •or USA
• APPLICATIONS
HOTLINE:
1 (800)
546-2739
PA13U REV. F FEBRUARY 2001 © 2001 Apex Microtechnology Corp.