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 (R)
Product Innovati PA13, PA13A o n
From
PA13 * PA13A PA13 * PA13A
DESCRIPTION
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. The PA13 is not recommended for gains below -3 (inverting) or +4 (non-inverting). 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.
Power Operational Amplifier
FEATURES
LOW THERMAL RESISTANCE -- 1.1C/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 11 D1 Q1 Q3 3 4 7 2 A1 1 5 6 C1 Q6A 8 Q6B Q2A Q2B
10 9
Q4
Q5
EXTERNAL CONNECTIONS
1 2 3 4 F.O. -R CL -IN +IN +R CL OUTPUT -VS -CL +CL +VS 5 6 7 8 9 10 11 12
Formed leads avaliable See package style EE
12-pin SIP PACKAGE STYLE DP
PA13U
www.cirrus.com
Copyright (c) Cirrus Logic, Inc. 2010 (All Rights Reserved)
MAR 2010 1 APEX - PA13REVQ
PA13 * PA13A
(R)
Product Innovation From
1. CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS - PA13/PA13A
Parameter
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, junction TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case (Note 3) -40 -25 -37 -VS
Symbol
Min
Max
100 15 135 37 VS 260 175 85 85
Units
V A W V V C C C C
CAUTION The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures
in excess of 850C to avoid generating toxic fumes. PA13 Min Typ
2 Full temp range 10 30 20 12 Full temp range 50 10 12 Full temp range 50 200 3 Full temp range VS - 5 74 VS - 3 100 * * 30 30 500
SPECIFICATIONS
Parameter
INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE vs. temp OFFSET VOLTAGE vs. supply OFFSET VOLTAGE vs. power BIAS CURRENT, initial BIAS CURRENT, vs. temp BIAS CURRENT, vs. supply OFFSET CURRENT, initial OFFSET CURRENT, vs. temp INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE (Note 4) 6 65 200 1 * * * 10 * * 5 * * * * * 10 20 * 4 40 * mV V/C V/V V/W nA pA/C pA/V nA pA/C M pF V dB
Test Conditions2,5
PA13A Max Min Typ Max Units
COMMON MODE REJECTION, Full temp range, DC VCM = VS - 6V GAIN OPEN LOOP GAIN @ 10Hz OPEN LOOP GAIN @ 10Hz 1K load Full temp range, 8 load
110 96 108 4 13 20 20 * *
* * * * *
dB dB MHz kHz
GAIN BANDWIDTH PRODUCT 8 load @ 1MHz POWER BANDWIDTH PHASE MARGIN, A V = +4 8 load Full temp range, 8 load
2
PA13U
(R)
Product Innovation From
PA13 * PA13A
PA13 Min
VS - 6 VS - 5 VS - 5 10
Parameter
OUTPUT VOLTAGE SWING VOLTAGE SWING VOLTAGE SWING CURRENT, peak SETTLING TIME to 0.1% SLEW RATE CAPACITIVE LOAD CAPACITIVE LOAD POWER SUPPLY VOLTAGE CURRENT, quiescent THERMAL RESISTANCE, AC, junction to case (Note 5) RESISTANCE, DC, junction to case RESISTANCE, DC, junction to air (Note 4) (Note 4) (Note 4)
Test Conditions2,5
PA13 = 10A, PA13A = 15A IO = 5A Full temp range, IO = 80mA 2V step
PA13A Max Min
* * * 15
Typ
Typ
Max
Units
V V V A
2 2.5 4 1.5 SOA *
* * * *
S V/S nF
Full temp range, AV = 4 Full temp range, A V > 10 Full temp range 10 40 25 TC = -55 to +125C, F > 60Hz TC = -55 to +125C TC = -55 to +125C -25 0.6
45 50 0.7
*
* * *
* * *
V mA C/W
0.9 30
1.1
* *
*
C/W C/W
TEMPERATURE RANGE, case Meets full range specification
+85
*
*
C
NOTES: 1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25C). 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. * The specification of PA13A is identical to the specification for PA13 in the applicable column to the left 3. The power supply voltage for all tests is 40, unless otherwise noted as a test condition. 4. +VS and -VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to -VS. 5. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. 6. Full temperature range specifications are guaranteed but not 100% tested.
PA13U
3
PA13 * PA13A
POWER RATING
(R)
Product Innovation From
Not all vendors use the same method to rate the power handling capability of a Power Op Amp. Apex Precision Power 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.
TYPICAL APPLICATION
+73V 47F .1F
RCL+ 11,12 9,10 .2 2 1 PA13 7,8 5,6 47F -22V 3 RCL- .2 .1F
2.5VP-P
RD 2K CF 50pF RF 1K
7.8mH 4 5Ap-p
THERMAL STABILITY
Apex Precision Power 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 Precision Power 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.
L* 1 YOKE DRIVER: -V = t HIGH CURRENT ASYMMETRICAL SUPPLY
RS .5
TYPICAL PERFORMANCE GRAPHS
INTERNAL POWER DISSIPATION, P (W)
120 100 80 60 40 20 0 0 20 40 60 80 100 120 140 CASE TEMPERATURE, TC (C) PA13
NORMALIZED BIAS CURRENT, IB (X)
140
POWER DERATING
2.5 2.2
BIAS CURRENT
17.5
CURRENT LIMIT, ILIM (A)
CURRENT LIMIT
15.0 12.5 10.0 7.5 5.0 2.5
VO = -24 V
1.9 1.6 1.3 1.0 .7 .4 -50 -25 0 25 50 75 100 125 CASE TEMPERATURE, TC (C) 0 -30
RCL = .06, RFO =
RCL = .18, RFO = 0
V
O
=0
VO = 24V VO = 0
0 -50 -25 0 25 50 75 100 125 CASE TEMPERATURE, TC (C)
120
OPEN LOOP GAIN, A (dB)
SMALL SIGNAL RESPONSE
PHASE RESPONSE
100
OUTPUT VOLTAGE, VO (VP-P)
POWER RESPONSE
68 46 32 22 15 10 6.8 4.6 10K 20K 30K 50K 70K .1M FREQUENCY, F (Hz)
100 80 60 40 20 0 -20 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz)
PHASE, ()
| +VS | + | -VS | = 100V
-60 -90 -120 -150 -180 -210 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz)
| +VS | - | -VS | = 80V | +VS | + | -VS | = 30V
REJECTION, CMR (dB)
COMMON MODE REJECTION
120
OLTAGE, VO (V)
100 80 60
6 4 2 0
VIN = 5V, tr = 100ns
OLTAGE, VN (nV/Hz)
8
PULSE RESPONSE
100 70 50 40 30
INPUT NOISE
4
PA13U
OPEN LOOP GAIN,
PHASE, ()
60 40 20 0 -20 1 10
(R)
-90 -120 -150
OUTPUT VOLTAGE,
32 22 15 10 6.8 4.6 10K
| +VS | - | -VS | = 80V | +VS | + | -VS | = 30V
Product Innovation From
100 1K 10K .1M 1M 10M FREQUENCY, F (Hz)
-180 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz)
-210
PA13 * PA13A
20K 30K 50K 70K .1M FREQUENCY, F (Hz)
COMMON MODE REJECTION, CMR (dB)
COMMON MODE REJECTION
120
OUTPUT VOLTAGE, VO (V)
100 80 60 40 20 0 1 10 100 1K 10K .1M FREQUENCY, F (Hz) 1M
6 4 2 0 -2 -4 -6 -8 0
VIN = 5V, tr = 100ns
INPUT NOISE VOLTAGE, VN (nV/Hz)
8
PULSE RESPONSE
100 70 50 40 30 20
INPUT NOISE
2
4 6 8 TIME, t (s)
10
12
10 10
1K 100 10K FREQUENCY, F (Hz)
.1M
1
DISTORTION, (%)
NORMALIZED, IQ (X)
AV =10 VS = 37V RL = 4
W
1.4 1.2 1.0 .8 .6 .1M .4 40 50 60 70 80 90 100 TOTAL SUPPLY VOLTAGE, VS (V)
TC C = -25
VOLTAGE DROP FROM SUPPLY (V)
3
HARMONIC DISTORTION
1.6
QUIESCENT CURRENT
6 5 4 3
OUTPUT VOLTAGE SWING
.3 .1 .03 .01
PO = 10 0m
PO
=4
W
-VO
C T C = 25
T C = 85 C
.003 100
P
O
=
12
0W
TC
= 125C
+VO 2 1
300
1K 3K 10K 30K FREQUENCY, F (Hz)
0
3 6 9 12 OUTPUT CURRENT, IO (A)
15
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.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.
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. 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.
OUTPUT CURRENT FROM +VS OR -VS (A)
15 10 6.0 4.0 3.0 2.0 1.0 .6
TH ER MA
T T
C C
SOA
ms 0.5 s t = 1m s t= 5m
C SE ON
t=
=2
=8
5C 5C
D
E BR D AK
L
.4 10 20 30 40 50 70 90 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE, VS - VO (V)
OW N
ad ste ys tat e
PA13U
5
PA13 * PA13A
(R)
Product Innovation From
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 CAPACITIVE LOAD ILIM = 5A ILIM = 10A 200F 500F 2.0mF 7.0mF 25mF 60mF 150mF 125F 350F 850F 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 = 25C: VS 45V 40V 35V 30V 25V 20V 15V SHORT TO VS C, L, OR EMF LOAD .43A .65A 1.0A 1.7A 2.7A 3.4A 4.5A SHORT TO COMMON 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 Precision Power web site at www.cirrus.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 -55C to 125C. For fixed current limit, leave pin 4 open and use equations 1 and 2.
RCL = ICL = 0.65 ICL 0.65 RCL
(1) (2)
Where:
ICL is the current limit in amperes. RCL is the current limit resistor in ohms.
6
PA13U
(R)
Product Innovation From
PA13 * PA13A
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.
ICL = RCL = 0.65 + (VO * 0.014) RCL 0.65 + (VO * 0.014) ICL
(3) (4)
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 + ICL = VO * 0.14 10.14 + RFO RCL VO * 0.14 10.14 + RFO ICL
(5)
0.65 + RCL =
(6)
Where: RFO is in K ohms.
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 apex.support@cirrus.com. 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
IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.
PA13U
7


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