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P r o d u c t II n n o v a t i o n FFrroom nnova m
PA16 * PA16A PA16 * PA16A
DESCRIPTION
thePA16andPA16aarewideband,highoutputcurrent 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 Power SIP package is electrically isolated.
Power Operational Amplifiers
FEATURES
HigHpowerbandwidtH--350kHz HigHslewrate--20V/s Fastsettlingtime--600ns lowcrossoVerdistortion-- Classa/b lowinternallosses--1.2Vat2a HigHoutputcurrent--5apeak lowinputbiascurrent--Fetinput isolatedcase--300Vdc
APPLICATIONS
motor,ValVeandactuatorcontrol magneticdeFlectioncircuitsupto 5a powertransducersupto350kHz audioampliFiersupto44wrms
EQUIVALENTSCHEMATIC
PA16U
http://www.cirrus.com
Copyright (c) Cirrus Logic, Inc. 2008
(All Rights Reserved)
AUG2008 1 APEX - PA16REVH
PA16 * PA16A
ExTERNALCONNECTIONS
P r o d u c t I n n o v a t i o nF r o m
Formed leads available See package style EE
12-pinSIP PACKAGE STYLEDP
1.CHARACTERISTICSANDSPECIFICATIONS AbSOLUTEMAxIMUMRATINGS-PA16/PA16a
Parameter
supplYVoltage,+Vsto-Vs outputcurrent,withinsoa POWER DISSIPATION, internal INPUT VOLTAGE, differential inputVoltage,commonmode TEMPERATURE, pin solder, 10s max. TEMPERATURE, junction TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case (Note 2) -40 -25 (Note 2) -30 -Vs+2
Symbol
Min
Max
38 5 62.5 30 +Vs-2 260 150 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. PA16 Min Typ
5 Fulltemprange 10 10 6 50 0.01 25 1000 3 100 100 * * 200 200 * 15 50 *
SPECIFICATIONS
Parameter
INPUT oFFsetVoltage,initial OFFSET VOLTAGE vs. temp OFFSET VOLTAGE vs. supply OFFSET VOLTAGE vs. power biascurrent,initial BIAS CURRENT, vs. temp BIAS CURRENT, vs. supply oFFsetcurrent,initial OFFSET CURRENT, vs. temp inputimpedance,dc inputcapacitance 10 50 1 * * * 25 100 * 3 25 mV V/c V/V V/w pa pa/c pa/V pa pa/c G pF
TestConditions3,7
PA16A Max Min Typ Max Units
2

PA16U
P r o d u c t I n n o v a t i o nF r o m
PA16 * PA16A
Parameter
commonmodeVoltage RANGE, Pos. (Note 6) commonmodeVoltage RANGE, Neg. (Note 6)
TestConditions3,7
Fulltemprange Fulltemprange
PA16 Min
+Vs-6 -Vs+6 70
PA16A Max Min
* * *
Typ
+Vs-3 -Vs+5 100
Typ
* * *
Max
Units
V V db
commonmodereJection, Fulltemprange dc GAIN openloopgain@10Hz openloopgain@10Hz 1K load Fulltemprange, 10K load
103 86 100 4.5 350 30 *
* * * * *
db db mHz kHz
gainbandwidtHproduct 10 load @1mHz powerbandwidtH pHasemargin OUTPUT VOLTAGE SWING VOLTAGE SWING current,peak settlingtimeto0.1% slewrate capacitiVeload Harmonicdistortion SMALL SIGNAL rise/fall time SMALL SIGNAL overshoot POWERSUPPLY Voltage CURRENT, quiescent THERMAL resistance,ac, junction to case (Note 5) resistance,dc, junction to case resistance,dc, junctiontoair TEMPERATURE RANGE, case Meets full range specification -25 F>60Hz F<60Hz Fulltemprange 7 Fulltemprange, aV>10 po=5w,F= 1kHz,rl = 4 rl = 10, aV=1 rl = 10, aV=1 2V step 13 (Note 4) (Note 4) io=5a, rcl = 0.08 io=2a Vs-4 Vs-2 5 10 load Fulltemprange, 10 load
Vs-3 Vs-1.2 0.6 20 soa 0.028 100 10
Vs-3 Vs-1.2 *
* * *
V V a s V/s
*
* * * * *
% ns %
15 27 1.4 1.8 30
19 40 1.63 2.0
*
* * * * *
* * * *
V ma c/w c/w c/w
+85
*
*
c
PA16U

3
PA16 * PA16A
notes:
P r o d u c t I n n o v a t i o nF r o m
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 PA16A is identical to the specification for PA16 in applicable column to the left. 3. The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test condition. 4. +Vsand-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. Exceeding CMV range can cause the output to latch. 7. Full temperature specifications are guaranteed but not 100% tested. 8. The absolute maximum negative input voltage is equal to the negative power supply voltage plus 1V (-Vs + 1V).
TYPICALAPPLICATION
VehicularSoundSystemPowerStage When system voltages are low and power is at a premium, the PA16 is a natural choice. The circuit above utilizes not only the feature of low internal loss of the PA16, 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.

PA16U
P r o d u c t I n n o v a t i o nF r o m
PA16 * PA16A
1
DISTORTION, THD (%)
HARMONIC DISTORTION
OUTPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE, VO (V)
AV = 10 VPS = 15V PO = .5W RL = 4
15 10 5 0 -5 -10 -15
PULSE RESPONSE
VIN = 1V, tr = 100ns LOAD = 10
.3 .2 .1 0 -.1 -.2 -.3
PULSE RESPONSE
VIN = .2V, tr = 50ns
0.1
PO = 5W RL = 4 PO = 25W RL = 2
0.01
0.001 .1K
1.0K 10K FREQUENCY, F (Hz)
100K
0
1
2 3 4 TIME, t (s)
5
0
.5 1.0 TIME, t (s)
1.5
PA16U

AD, A (dB)
0 -.3
LOADING EFFECTS
I = 150mA
OUTPUT VOLTAGE, V
.1 0 -.1 -.2 -.3
PA16 * PA16A
5 0 .5 1.0 TIME, t (s) 1.5
P r o d u c t I n n o v a t i o nF r o m
DELTA GAIN WITH LOAD, A (dB)
0 -.3 -.6 -.9 -1.2 -1.5 100
LOADING EFFECTS
IO = 150mA
IO = 400mA
1K 10K FREQUENCY, F (Hz)
.1M
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's complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
SAFEOPERATINGAREA(SOA)
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. The following guidelines may save extensive analytical efforts: 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=85c. VS 18V 15V 10V SHORTTOVS C,LOREMFLOAD .9a 1.0a 1.6a SHORTTO COMMON 1.8a 2.1a 3.2a
These simplified limits may be exceeded with further analysis using the operating conditions for a specific application.
CURRENTLIMIT
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.
RCL = 0.65 - 0.01 ILIM (A)
6

PA16U
P r o d u c t I n n o v a t i o nF r o m
PA16 * PA16A
DEVICEMOUNTING
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.
CONTACTINGCIRRUSLOGICSUPPORT
For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact tucson.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
importantnotice 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. certainapplicationsusingsemiconductorproductsmaYinVolVepotentialrisksoFdeatH,personalinJurY,orseVerepropERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE suitableForuseinproductssurgicallYimplantedintotHebodY,automotiVesaFetYorsecuritYdeVices,liFesupportproductsorotHercriticalapplications.inclusionoFcirrusproductsinsucHapplicationsisunderstoodtobeFullYattHecusTOMER'S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF mercHantabilitYandFitnessForparticularpurpose,witHregardtoanYcirrusproducttHatisusedinsucHamanner.iFtHe CUSTOMER OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, bYsucHuse,toFullYindemniFYcirrus,itsoFFicers,directors,emploYees,distributorsandotHeragentsFromanYandall 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.
PA16U

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