PA13A [APEX]
POWER OPERATIONAL AMPLIFIERS; 功率运算放大器
| 型号： | PA13A |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | POWER OPERATIONAL AMPLIFIERS |
| 文件： | 总4页 (文件大小：228K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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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
12-PIN SIP
PACKAGE STYLE DP
Formed leads avaliable
APPLICATIONS
See package styles ED & EE
• 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
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DESCRIPTION
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The PA13 is a state of the art high voltage, very high
output current operational amplifier designed to drive resis-
tive, 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
programmablecurrentlimitingresistors.Forcontinuousopera-
tion under load, a heatsink of proper rating is recommended.
The PA13 is not recommended for gains below –3 (inverting)
or +4 (non-inverting).
Thishybridintegratedcircuitutilizesthickfilm(cermet)resis-
tors,ceramiccapacitorsandsemiconductorchipstomaximize
reliability, minimize size and give top performance. Ultrasoni-
callybondedaluminumwiresprovidereliableinterconnections
at all operating temperatures. The 12-pin power SIP package
is electrically isolated.
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POWER RATING
Not all vendors use the same method to rate the power han-
dling capability of a Power Op Amp. APEX rates the internal
dissipation, which is consistent with rating methods used by
transistormanufacturersandgivesconservativeresults.Rating
delivered power is highly application dependent and therefore
canbemisleading.Forexample,the135Winternaldissipation
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.
TYPICAL APPLICATION
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THERMAL STABILITY
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APEX has eliminated the tendency of class A/B output
stages toward thermal runaway and thus has vastly increased
amplifierreliability.Thisfeature,notfoundinmostotherPower
Op Amps, was pioneered by APEX in 1981 using thermistors
which assure a negative temperature coefficient in the quies-
cent current. The reliability benefits of this added circuitry far
outweigh the slight increase in component count.
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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
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PA13
PA13/PA13A
100V
15A
135W
±VS –3V
±VS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +Vs to –Vs
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder -10s max.
TEMPERATURE, junction1
260°C
175°C
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
–40 to +85°C
–25 to +85°C
SPECIFICATIONS
PA13
TYP
PA13A
TYP
PARAMETER
TEST CONDITIONS2, 5
MIN
MAX
MIN
MAX
UNITS
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. power
BIAS CURRENT, initial
T = 25°C
±2
±6
±65
±200
±1
*
*
*
±10
*
*
±5
*
*
±4
±40
*
mV
µV/°C
µV/V
µV/W
nA
pA/°C
pA/V
nA
pA/°C
MΩ
pF
V
dB
FuC ll temperature range
T = 25°C
±10
±30
±20
±12
±50
±10
±12
±50
200
3
TC = 25°C
TC = 25°C
±30
±500
±20
*
BIAS CURRENT, vs. temperature
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial
OFFSET CURRENT, vs. temperature
INPUT IMPEDANCE, DC
FuC ll temperature range
T = 25°C
TC = 25°C
±30
±10
FuC ll temperature range
T = 25°C
INPUT CAPACITANCE
TC = 25°C
*
*
*
COMMON MODE VOLTAGE RANGE3
COMMON MODE REJECTION, DC
FuC ll temperature range
Full temp. range, VCM = ±VS –6V
±VS –5 ±VS –3
*
*
74
100
GAIN
OPEN LOOP GAIN at 10Hz
OPEN LOOP GAIN at 10Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
POWER BANDWIDTH
PHASE MARGIN , AV = +4
T = 25°C, 1KΩ load
FuC ll temp. range, 8Ω load
T = 25°C, 8Ω load
110
108
4
20
20
*
*
*
*
*
dB
dB
MHz
kHz
°
96
13
*
*
TC = 25°C, 8Ω load
FuC ll temp. range, 8Ω load
OUTPUT
VOLTAGE SWING3
VOLTAGE SWING3
VOLTAGE SWING3
CURRENT, peak
SETTLING TIME to .1%
SLEW RATE
T
= 25°C, PA13 = 10A, PA13A = 15A
±V –6
±VS –5
±VSS–5
10
*
*
*
V
V
V
TC = 25°C, IO = 5A
FuC ll temp. range, IO = 80mA
T = 25°C
15
A
TC = 25°C, 2V step
2
4
*
*
µs
V/µs
nF
TC = 25°C
2.5
*
CAPACITIVE LOAD
CAPACITIVE LOAD
FuC ll temperature range, A = 4
1.5
SOA
*
*
Full temperature range, AVV > 10
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
Full temperature range
TC = 25°C
±10
±40
25
±45
50
*
*
*
*
*
V
mA
THERMAL
RESISTANCE, AC, junction to case4
RESISTANCE, DC, junction to case
RESISTANCE, DC, junction to air
TEMPERATURE RANGE, case
T = –55 to +125°C, F > 60Hz
TC = –55 to +125°C
.6
.9
30
.7
1.1
*
*
*
*
*
°C/W
°C/W
°C/W
°C
TCC = –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. +V and –VS denote the positive and negative supply rail respectively. Total V is measured from +VS to –VS.
4. RaSting applies if the output current alternates between both output transistorsSat a rate faster than 60Hz.
5. Full temperature range specifications are guaranteed but not 100% tested.
The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850°C to
avoid generating toxic fumes.
CAUTION
2APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE
GRAPHS
PA13
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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
PA13
GENERAL
load and short circuits to the supply rail or common if the
current limits are set as follows at TC = 25°C:
Please read Application Note 1 "General Operating Con-
siderations" 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.
SHORT TO ±VS
C, L, OR EMF LOAD
SHORT TO
COMMON
±VS
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
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.
These simplified limits may be exceeded with further analysis
using the operating conditions for a specific application.
2. The second breakdown effect which occurs whenever the
simultaneouscollectorcurrentandcollector-emittervoltage
exceeds specified limits.
3. The junction temperature of the output transistors.
TheSOAcurvescombinetheeffectofalllimitsforthisPower
CURRENT LIMITING
Refer to Application Note 9, "Current Limiting", for details of
bothfixedandfoldovercurrentlimitoperation.VisittheApexweb
site at www.apexmicrotech.com for a copy of Power_design.
exewhichplotscurrentlimitsvs.steadystateSOA.Bewarethat
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.
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RCL = 0.65/LCL (1)
ICL = 0.65/RCL (2)
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Where:
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ICL is the current limit in amperes.
RCL is the current limit resistor in ohms.
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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.
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0.65 + (Vo * 0.014)
ICL
=
(3)
(4)
RCL
0.65 + (Vo * 0.014)
ICL
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.
RCL
=
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 R at the
maximum output voltage. Equation 3 should then beCuLsed to
plot the resulting foldover limits on the SOA graph. If equa-
tion 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.
1. Capacitive and dynamic* inductive loads up to the following
maximum are safe with the current limits set as specified.
CAPACITIVE LOAD
INDUCTIVE LOAD
±VS
ILIM = 5A
ILIM = 10A
ILIM = 5A
ILIM = 10A
50V
40V
35V
30V
25V
20V
15V
200µF
500µF
2.0mF
7.0mF
25mF
60mF
150mF
125µF
350µF
850µF
2.5mF
10mF
20mF
60mF
5mH
15mH
50mH
150mH
500mH
1,000mH
2,500mH
2.0mH
3.0mH
5.0mH
10mH
20mH
30mH
50mH
Vo 0.14
10.14 + RFO
*
0.65 +
ICL
=
(5)
(6)
*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.
RCL
Vo 0.14
10.14 + RFO
*
0.65 +
RCL
=
ICL
Where:
RFO is in K ohms.
2. The amplifier can handle any EMF generating or reactive
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
4ACOTLCOAT9TAORA• TO, RO5• A LCTOL: 1 (0) 529
PA13U REV K NOVEMBER 2003 © 2003 Apex Microtechnology Corp.
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