Product Innovation PA16, PA16A PA16PA16 • PA16A • PA16A From Power Operational Amplifiers FEATURES 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. ♦ HIGH POWER BANDWIDTH — 350kHz ♦ HIGH SLEW RATE — 20V/μs ♦ 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 EQUIVALENT SCHEMATIC 4 R1 R2 R5 R3 D1 Q1 R6 Q2 R4 Q4 2 R7 10 Q3 12 R15 A1 1 Q5 R8 Q7 R9 R10 R12 R13 Q6 8 R14 Q8 D2 R11 6 PA16U www.cirrus.com Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved) NOV 20091 APEX − PA16REVI PA16 • PA16A Product Innovation From EXTERNAL CONNECTIONS 1 2 –IN +IN 3 4 5 6 7 8 9 10 11 12 –R CL +VS OUT –VS 12-pin SIP PACKAGE STYLE DP +R CL Formed leads available See package style EE 1. CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS – PA16/PA16A Parameter Max Units SUPPLY VOLTAGE, +VS to -VS 38 V OUTPUT CURRENT, within SOA 5 A 62.5 W -30 30 V -VS + 2 +VS - 2 V 260 °C POWER DISSIPATION, internal Symbol Min (Note 2) INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder, 10s max. TEMPERATURE, junction 150 °C TEMPERATURE RANGE, storage −40 85 °C OPERATING TEMPERATURE RANGE, case −25 85 °C CAUTION (Note 2) The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes. SPECIFICATIONS Parameter Test Conditions3,7 PA16 Min PA16A Typ Max ±5 ±10 Min Typ Max Units ±10 ±1 ±3 mV ±50 * ±25 µV/°C INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE vs. temp Full temp range OFFSET VOLTAGE vs. supply ±10 * µV/V OFFSET VOLTAGE vs. power ±6 * µV/W BIAS CURRENT, initial 50 BIAS CURRENT, vs. temp 0.01 OFFSET CURRENT, initial 25 OFFSET CURRENT, vs. temp INPUT CAPACITANCE 2 25 200 BIAS CURRENT, vs. supply INPUT IMPEDANCE, DC 200 100 pA * pA/°C * 100 15 100 pA/V 50 pA * pA/°C 1000 * GΩ 3 * pF PA16U PA16 • PA16A Product Innovation From PA16 PA16A Test Conditions3,7 Min Typ Min Typ COMMON MODE VOLTAGE RANGE, Pos. (Note 6) Full temp range +VS - 6 +VS - 3 * * V COMMON MODE VOLTAGE RANGE, Neg. (Note 6) Full temp range -VS + 6 -VS + 5 * * V 70 100 * * dB * dB * dB Parameter COMMON MODE REJECTION, Full temp range DC Max Max Units GAIN OPEN LOOP GAIN @ 10Hz 1KΩ load OPEN LOOP GAIN @ 10Hz Full temp range, 10KΩ load 103 86 100 * GAIN BANDWIDTH PRODUCT 10Ω load @ 1MHz 4.5 * MHz POWER BANDWIDTH 10Ω load 350 * kHz PHASE MARGIN Full temp range, 10Ω load 30 * ° OUTPUT VOLTAGE SWING (Note 4) IO = 5A, RCL = 0.08Ω ±VS - 4 ±VS - 3 ±VS - 3 * V VOLTAGE SWING (Note 4) IO = 2A ±VS - 2 ±VS - 1.2 ±VS - 1.2 * V CURRENT, peak SETTLING TIME to 0.1% 5 2V step SLEW RATE * 0.6 13 20 * A * µS * V/µS CAPACITIVE LOAD Full temp range, A V > 10 SOA * HARMONIC DISTORTION PO = 5W, F = 1kHz, RL = 4Ω 0.028 * % SMALL SIGNAL rise/fall time RL = 10Ω, AV = 1 100 * nS SMALL SIGNAL overshoot RL = 10Ω, AV = 1 10 * % POWER SUPPLY VOLTAGE Full temp range ±7 CURRENT, quiescent ±15 ±19 27 * * * V 40 * * mA THERMAL RESISTANCE, AC, junction to case (Note 5) F > 60Hz 1.4 1.63 * * °C/W RESISTANCE, DC, junction to case F < 60Hz 1.8 2.0 * * °C/W RESISTANCE, DC, junction to air TEMPERATURE RANGE, case Meets full range specification PA16U 30 -25 * +85 * °C/W * °C 3 PA16 • PA16A Product Innovation From 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 = 25°C). 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. +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. 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). TYPICAL APPLICATION Vehicular Sound System Power Stage 100K 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. +12 .47µF 16K .27Ω 1K PA16 .001µF IN .47µF RCL+ 3.2Ω 16W RCL– 16K –12 .27Ω LOW INTERNAL LOSS MAXIMIZES EFFICIENCY 50 40 30 20 10 0 0 25 50 75 100 125 CASE TEMPERATURE, TC (°C) SMALL SIGNAL RESPONSE 2.5 TC = 25 to 85°C 2.0 1.5 ±VO 1.0 .5 0 PHASE, Ф (°) –60 N LOOP GAIN, AOL (dB) 80 20 1 2 3 4 OUTPUT CURRENT, IO (A) 2.5 RCL = 0.3Ω 2.0 1.5 RCL = 0.62Ω 1.0 .5 0 –25 5 PHASE RESPONSE 30 50 0 25 75 100 125 CASE TEMPERATURE, TC (°C) POWER RESPONSE | +VS | + | –VS | = 36V –30 40 0 CURRENT LIMIT 3.0 3.0 100 60 OUTPUT VOLTAGE SWING 3.5 CURRENT LIMIT, ILIM (A) 60 120 4 POWER DERATING –90 –120 –150 UT VOLTAGE, VO (VP-P) 70 SATURATION VOLTAGE, VS –VO (V) INTERNAL POWER DISSIPATION, PD (W) TYPICAL PERFORMANCE GRAPHS 23 18 13 10 | +VS | + | –VS | = 30V PA16U 40 30 20 10 ±VO 1.0 0 25 50 75 100 125 CASE TEMPERATURE, TC (°C) SMALL SIGNAL RESPONSE .5 0 1 2 3 4 OUTPUT CURRENT, IO (A) 1.5 RCL = 0.62Ω 1.0 PA16 • PA16A .5 0 –25 5 PHASE RESPONSE 0 50 0 25 75 100 125 CASE TEMPERATURE, TC (°C) POWER RESPONSE 30 40 20 –90 –120 –150 0 –180 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) BIAS CURRENT 256 64 16 4 1 .25 .06 –15 5 45 65 85 25 CASE TEMPERATURE, TC (C) 105 –210 COMMON MODE REJECTION, CMR (dB) 1 INPUT NOISE 40 120 1 10 COMMON MODE REJECTION 80 60 40 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) SETTLING TIME 3 35 2.5 25 2 TIME, t (µs) 30 15 AD V 1.5 0.1 HARMONIC DISTORTION PO = .5W RL = 4Ω PO = 5W RL = 4Ω 0.01 0.001 .1K PA16U PO = 25W RL = 2Ω 1.0K 10K FREQUENCY, F (Hz) 100K D OA OL N mV 10 1 AD 0Ω LO 10mV 1 2 5 6 1 3 4 7 8 OUTPUT CHANGE FROM ZERO, VOLTS .1M AV = 10 VPS = 15V LO 0 15 OUTPUT VOLTAGE, VO (V) 1 100 1K 10K FREQUENCY, F (Hz) NO 1m .5 10 10 7.8 6 .1M 140 5 0 –5 –10 0 1 2 3 4 TIME, t (µs) POWER SUPPLY REJECTION 100 +VS 80 60 –VS 40 20 0 10 1.08 100 1K 10K .1M 1M FREQUENCY, F(Hz) 10M QUIESCENT CURRENT 1.06 1.04 1.02 1 .98 .96 .94 .92 –25 0 25 50 75 100 125 CASE TEMPERATURE, TC (°C) PULSE RESPONSE VIN = ±.2V, tr = 50ns .2 .1 0 –.1 –.2 –.3 5 .2M .5M .7M 1M .3M FREQUENCY, F (Hz) 120 .3 VIN = ±1V, tr = 100ns LOAD = 10Ω | +VS | + | –VS | = 30V 10 PULSE RESPONSE 10 –15 13 OUTPUT VOLTAGE, VO (V) 20 18 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) 100 20 23 POWER SUPPLY REJECTION, PSR (dB) 60 NORMALIZED QUIESCENT CURRENT IQ (X) –60 PHASE, Ф (°) 80 OUTPUT VOLTAGE, VO (VP-P) | +VS | + | –VS | = 36V –30 OPEN LOOP GAIN, AOL (dB) NORMALIZED BIAS CURRENT, IB (X) 1.5 100 –20 INPUT NOISE VOLTAGE, eN (nV/√Hz) 2.0 CL 2.0 Product Innovation From 120 DISTORTION, THD (%) TC = 25 to 85°C AD, ∆A (dB) 0 2.5 CURRENT LIMIT, ILI SATURATION VOLTAGE, INTERNAL POWER DISSIPA 50 0 0 .5 1.0 TIME, t (µs) 1.5 LOADING EFFECTS 5 –.3 I = 150mA OUTPUT VOLTAGE, .1 0 –.1 –.2 PA16 • PA16A –.3 DELTA GAIN WITH LOAD, ∆A (dB) 5 0 0 Product Innovation From .5 1.0 TIME, t (µs) 1.5 LOADING EFFECTS –.3 IO = 150mA –.6 GENERAL –.9 IO = 400mA –1.2 –1.5 100 10K 1K FREQUENCY, F (Hz) .1M 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. ±VS SHORT TO ±VS C, L OR EMF LOAD SHORT TO COMMON 18V 15V 10V .9A 1.0A 1.6A 1.8A 2.1A 3.2A SOA 5.0 T 4.0 3.0 2.0 1.5 1.0 =6 C T C 0° =8 5° C C wn do s ak re 5m db t= on ec es tat ys ad ste 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 = 85°C. OUTPUT CURRENT FROM +VS OR –VS (A) SAFE OPERATING AREA (SOA) 0.8 0.6 0.5 6 7 8 9 10 15 20 25 30 38 SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS –VO (V) These simplified limits may be exceeded with further analysis using the operating conditions for a specific application. 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 = 0.65 - 0.01 ILIM (A) 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. 6 PA16U Product Innovation From PA16 • PA16A 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 [email protected]. 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. 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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 7