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FEATURES
* * * * * * * * HIGH POWER BANDWIDTH -- 350kHz HIGH SLEW RATE -- 20V/s 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
APPLICATIONS
* * * * MOTOR, VALVE AND ACTUATOR CONTROL MAGNETIC DEFLECTION CIRCUITS UP TO 5A POWER TRANSDUCERS UP TO 350 kHz AUDIO AMPLIFIERS UP TO 44W RMS
12-PIN SIP PACKAGE STYLE DP
Formed leads available See package style s ED & EE
TYPICAL APPLICATION

DESCRIPTION
The PA16 and PA16A 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 Power SIP package is electrically isolated.
Vehicular Sound System Power Stage 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.
EQUIVALENT SCHEMATIC

EXTERNAL CONNECTIONS

APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com
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PA16 * PA16A
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 max. TEMPERATURE, junction1 TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case TEST CONDITIONS 2, 6 TC = 25C Full temperature range TC = 25C TC = 25C TC = 25C TC = 85C TC = 25C TC = 25C TC = 85C TC = 25C TC = 25C Full temperature range Full temperature range Full temperature range TC = 25C, 1k load Full temp. range, 10k load TC = 25C, 10 load TC = 25C, 10 load Full temp. range, 10 load TC = 25C, IO = 5A, RCL = .08 Full temp. range, IO = 2A TC = 25C TC = 25C, 2V step TC = 25C Full temp. range, AV > 10 PO = 5W, F = 1kHz, RL = 4 RL = 10, AV = 1 RL = 10, AV = 1 Full temperature range TC = 25C F > 60Hz F < 60Hz Meets full range specifications -25 MIN PA16 TYP 5 10 10 6 50 .01 25 1000 3 +VS -3 -VS +5 100 103 100 4.5 350 30 MAX 10 50 200 200 100 100
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
SPECIFICATIONS
PARAMETER 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 GAIN OPEN LOOP GAIN at 10Hz OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN 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 POWER SUPPLY VOLTAGE CURRENT, quiescent THERMAL RESISTANCE, AC junction to case4 RESISTANCE, DC junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case
38V 5A 62.5W VS -5V VS -2V 260C 150C -40 to +85C -25 to +85C MIN PA16A TYP 1 * * * 25 * 15 * * * * * * * * * * * * * * * * * * * * * * * * * * * * MAX 3 25 100 * 50 * UNITS mV V/C V/V V/W pA pA/C pA/V pA pA/C G pF V V dB dB dB MHz kHz V V A s V/s % ns % V mA C/W C/W C/W C
+VS -6 -VS +6 70
* * *
86
*
VS -4 VS -3 VS -2 VS -1.2 5 .6 13 20 SOA .028 100 10 7 15 27 1.4 1.8 30 19 40 1.6 2.0 +85
VS -3 VS -1.2 * *
*
*
NOTES: * The specification of PA16A is identical to the specification for PA16 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.
CAUTION
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The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850C to avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION * 5980 NORTH SHANNON ROAD * TUCSON, ARIZONA 85741 * USA * APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
PA16 * PA16A

APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com
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PA16 * PA16A
OPERATING CONSIDERATIONS

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.

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 exten sive 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. SHORT TO VS SHORT TO C, L OR EMF LOAD COMMON VS 18V .9A 1.8A 15V 1.0A 2.1A 10V 1.6A 3.2A These simplified limits may be exceeded with further analysis using the operating conditions for a specific application.

SAFE OPERATING AREA (SOA)
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. RCL = .65 ILIM (A) -0.01

DEVICE MOUNTING
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.

This data sheet has been carefully checked and is believed to be reliable, SHANNON ROAD * is assumed ARIZONA 85741 * USA * APPLICATIONS are subject 1 (800) 546-2739 APEX MICROTECHNOLOGY CORPORATION * 5980 NORTH however, no responsibility TUCSON, for possible inaccuracies or omissions. All specificationsHOTLINE: to change without notice.
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PA16U REV F MARCH 2003 (c) 2003 Apex Microtechnology Corp.

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