PA74, PA76, PA74A, PA76A PA74/PA76 PPA74/7A74A/76A6 PA74A/76A Power Dual Operational Amplifiers FEATURES LOW COST WIDE COMMON MODE RANGE Includes negative supply WIDE SUPPLY VOLTAGE RANGE Single supply: 5V to 40V Split supplies: 2.5V to 20V 8-PIN TO-3 HIGH EFFICIENCY Vs2.2V at 2.5A typ PACKAGE STYLE CE HIGH OUTPUT CURRENT 3A LOW DISTORTION R4 R2 R3 10K 9K +28V 10K +28V R1 APPLICATIONS 5K HALF & FULL BRIDGE MOTOR DRIVERS R5 A B M 10K AUDIO POWER AMPLIFIER + + STEREO 30W RMS per channel 1/2 PA74 1/2 PA74 R6 COMMAND BRIDGE 60W RMS per package 10K INPUT IDEAL FOR SINGLE SUPPLY SYSTEMS FIGURE 1: BIDIRECTIONAL 0/10V SPEED CONTROL FROM A 5V Peripherals, 12V Automotive SINGLE SUPPLY. 28V Avionic TYPICAL APPLICATION DESCRIPTION R1 and R2 set up amplifier A in a non-inverting gain of 2.8. The ampliefi r design consists of dual monolithic input and output Amp B is set up as a unity gain inverter driven from the output stages to achieve the desired input and output characteristics of amp A. Note that amp B inverts signals about the reference of the PA74 and PA76. The input stage utilizes a dual power op node, which is set at mid-supply (14V) by R5 and R6. When amp on a single chip monolithic that drives the output stages. the command input is 5V, the output of amp A is 14V. Since The output stages are configured in a non inverting unity gain this is equal to the reference node voltage, the output of amp buffer configuration. The output stages of the amplifier are also B is also 14V, resulting in 0V across the motor. Inputs more compensated for stability. The PA74 and PA76 dual amplifiers are positive than 5V result in motor current ofl w from left to right designed with both monolithic and hybrid technologies providing (see Figure 1). Inputs less positive than 5V drive the motor in a cost effective solution for applications requiring multiple ampli- the opposite direction. erfi s per board or bridge mode configurations. Both amplifiers The amplifiers are especially well-suited for this application. are internally compensated but are not recommended for use The extended common mode range allows command inputs as unity gain followers. as low as 0V. Its superior output swing abilities let it drive This dual hybrid circuit utilizes a beryllia (BeO) substrate, thick within 2V of supply at an output current of 2A. This means lm fi resistors, ceramic capacitors and monolithic amplifiers to that a command input that ranges from 0.714V to 9.286V will maximize reliability and power handling capability, minimize size drive a 24V motor from full scale CCW to full scale CW at up and give top performance. Ultrasonically bonded aluminum wires to 2A. A single power op amp with an output swing capability provide reliable interconnections at all operating temperatures. of Vs 6 would require 30V supplies and would be required to The 8-Pin TO-3 package is hermetically sealed and electrically swing 48V p-p at twice the speed to deliver an equivalent drive. isolated. The use of compressible isolation washers voids the warranty. EXTERNAL CONNECTIONS EQUIVALENT SCHEMATIC ONE CHANNEL PA74 PA76 +V S -V +IN,B S IN,B V S I BIAS 7 7 MONITOR OUT,B -IN,B 6 6 CURRENT GAIN 8 +IN,B 8 OUT,A B 5 5 + TOP -IN +IN THERMAL TOP B A PROTECT OUT VIEW VIEW + A 4 4 CURRENT +IN,A -IN,A 1 1 GAIN 3 3 OUT,A OUT,B 2 2 -V -IN,A +IN,A S +V +V S S Copyright Apex Microtechnology, Inc. 2012 OCT 2012 wwwPA74-76U .apexanalog.com 1 (All Rights Reserved) PA74-76U REVH + + PA74/76 PA74A/76A SUPPLY VOLTAGE, total 5V to 40V ABSOLUTE MAXIMUM RATINGS OUTPUT CURRENT SOA POWER DISSIPATION, internal (per amplifier) 36W POWER DISSIPATION, internal (both amplifiers) 60W INPUT VOLTAGE, differential V S INPUT VOLTAGE, common mode +V , -V 0.5V S S 1 JUNCTION TEMPERATURE, max 150C TEMPERATURE, pin solder10 sec max 350C TEMPERATURE RANGE, storage 65C to 150C OPERATING TEMPERATURE RANGE, case 55C to 125C SPECIFICATIONS PA74/76 PA74A/PA76A 2 PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNITS INPUT OFFSET VOLTAGE, initial 1.5 10 .5 7 mV OFFSET VOLTAGE, vs. temperature Full temperature range 20 10 V/C BIAS CURRENT, initial 100 500 * 250 nA COMMON MODE RANGE Full temperature range V +V 1.3 * * V S S COMMON MODE REJECTION, DC Full temperature range 60 70 * * dB POWER SUPPLY REJECTION Full temperature range 60 90 * * dB CHANNEL SEPARATION I = 1A, F = 1kHz 50 70 * * dB OUT INPUT NOISE VOLTAGE R = 100, f = 1 to 100KHz S GAIN OPEN LOOP GAIN Full temperature range 89 100 * * * dB GAIN BANDWIDTH PRODUCT A = 40dB 0.9 1.4 * * MHz V POWER BANDWIDTH V = 28V 13.6 * kHz O(P-P) OUTPUT CURRENT, peak 2.5 3 A SLEW RATE 0.5 1.4 * * V/s VOLTAGE SWING Full temp. range, I = 100mA V 1.1 V 0.9 * * V O S S VOLTAGE SWING Full temp. range, I = 1A V 2.0 V 1.7 * * V O S S VOLTAGE SWING I = 2.5A (PA74, 76) V 3.5 V 2.9 * * V O S S VOLTAGE SWING I = 3.0A (PA74A, PA76A) V 4.0 V 3.3 V O S S POWER SUPPLY 3 VOLTAGE, VSS 30 40 * * * V CURRENT, quiescent, total 18 40 * * mA THERMAL RESISTANCE, junction to case DC, single amplifier 3.2 3.5 * * C/W 4 DC, both amplifiers 1.9 2.1 * * C/W AC, single amplifier 2.4 2.6 * * C/W 4 AC, both amplifiers 1.4 1.6 * * C/W RESISTANCE, junction to air 30 * * C/W TEMPERATURE RANGE, case Meets full range specifications 25 85 25 85 C NOTES: * The specification of PA74A/PA76A is identical to the specification for PA74/PA76 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. Unless otherwise noted, the following conditions apply: VS = 15V, TC = 25C. 3. +VS and VS denote the positive and negative supply rail respectively. VSS denotes the total rail-to-rail supply voltage. 4. Rating applies when power dissipation is equal in the two amplifiers. The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or CAUTION subject to temperatures in excess of 850C to avoid generating toxic fumes. 2 PA74-76U