Rail-to-Rail High Output a Current Operational Amplifiers OP179/OP279 PIN CONFIGURATIONS FEATURES Rail-to-Rail Inputs and Outputs 5-Lead SOT-23-5 High Output Current: 60 mA (RT-5) Single Supply: 5 V to 12 V Wide Bandwidth: 5 MHz OP179 High Slew Rate: 3 V/ s OUT A 1 5 V Low Distortion: 0.01% V+ 2 Unity-Gain Stable +IN A 3 4 IN A No Phase Reversal Short-Circuit Protected Drives Capacitive Loads: 10 nF 8-Lead SOIC APPLICATIONS (S Suffix) Multimedia Telecom OP179 DAA Transformer Driver NC 1 8 NC LCD Driver IN A 2 V+ 7 Low Voltage Servo Control +IN A OUT A 3 6 Modems V 4 5 NC FET Drivers NC = NO CONNECT 8-Lead SOIC and TSSOP GENERAL DESCRIPTION SO-8 (S) and RU-8 The OP179 and OP279 are rail-to-rail, high output current, single-supply amplifiers. They are designed for low voltage applications that require either current or capacitive load drive OUT A V+ 1 8 IN A OUT B capability. The OP179/OP279 can sink and source currents of 2 7 OP279 +IN A 3 IN B 60 mA (typical) and are stable with capacitive loads to 10 nF. 6 V +IN B 4 5 Applications that benefit from the high output current of the OP179/OP279 include driving headphones, displays, transform- ers and power transistors. The powerful output is combined with a unique input stage that maintains very low distortion with wide common-mode range, even in single supply designs. Very good audio performance can be attained when using the OP179/OP279 in 5 volt systems. THD is below 0.01% with a The OP179/OP279 can be used as a buffer to provide much 600 load, and noise is a respectable 21 nV/Hz. Supply current greater drive capability than can usually be provided by CMOS is less than 3.5 mA per amplifier. outputs. CMOS ASICs and DAC often have outputs that can swing to both the positive supply and ground, but cannot drive The single OP179 is available in the 5-lead SOT-23-5 package. more than a few milliamps. It is specified over the industrial (40C to +85C) tempera- ture range. Bandwidth is typically 5 MHz and the slew rate is 3 V/ s, making these amplifiers well suited for single supply applications that The OP279 is available in 8-lead TSSOP and SO-8 surface require audio bandwidths when used in high gain configurations. mount packages. They are specified over the industrial (40C Operation is guaranteed from voltages as low as 4.5 V, up to 12 V. to +85C) temperature range. REV. G Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties that Tel: 781/329-4700 www.analog.com may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781/326-8703 Analog Devices, Inc., 2002OP179/OP279SPECIFICATIONS ELECTRICAL SPECIFICATIONS ( V = 5.0 V, V = 2.5 V, 40 C T +85 C unless otherwise noted.) S CM A Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage OP179 V V = 2.5 V 5mV OS OUT OP279 V V = 2.5 V 4mV OS OUT Input Bias Current I V = 2.5 V, T = 25C 300 nA B OUT A V = 2.5 V 700 nA OUT Input Offset Current I V = 2.5 V, T = 25C 50 nA OS OUT A V = 2.5 V 100 nA OUT Input Voltage Range V 05 V CM Common-Mode Rejection Ratio CMRR V = 0 V to 5 V 56 66 dB CM Large Signal Voltage Gain A R = 1 k , 0.3 V V 4.7 V 20 V/mV VO L OUT Offset Voltage Drift V /T4 V/C OS OUTPUT CHARACTERISTICS Output Voltage High V I = 10 mA Source +4.8 V OH L Output Voltage Low V I = 10 mA Sink, T = 25C75mV OL L A I = 10 mA Sink 100 mV L Short-Circuit Limit I T = 25C 40 mA SC A Output Impedance Z f = 1 MHz, A = 1 22 OUT V POWER SUPPLY = 4.5 V to 12 V 70 88 dB Power Supply Rejection Ratio PSRR V S Supply Current/Amplifier I V = 2.5 V 3.5 mA SY OUT Supply Voltage Range V +4.5 +12 V S DYNAMIC PERFORMANCE Slew Rate SR R = 1 k , 1 nF 3 V/ s L Gain Bandwidth Product GBP 5 MHz Phase Margin m 60 Degrees Capacitive Load Drive No Oscillation 10 nF AUDIO PERFORMANCE Total Harmonic Distortion THD 0.01 % Voltage Noise Density e f = 1 kHz 22 nV/Hz n ELECTRICAL SPECIFICATIONS ( V = 5.0 V, 40 C T +85 C unless otherwise noted.) S A Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage OP179 V V = 0 5mV OS OUT OP279 V V = 0 4mV OS OUT Input Bias Current I T = 25C 300 nA B A 700 nA Input Offset Current I T = 25C 50 nA OS A 100 nA Input Voltage Range V 5 +5 V CM Common-Mode Rejection Ratio CMRR V = 5 V to +5 V 56 66 dB CM Large Signal Voltage Gain A R = 1 k , 4.7 V V 4.7 V 20 V/mV VO L OUT Offset Voltage Drift V /T3 V/C OS OUTPUT CHARACTERISTICS Output Voltage High V I = 10 mA Source +4.8 V OH L Output Voltage Low V I = 10 mA Sink 4.85 V OL L Short Circuit Limit I T = 25C 50 mA SC A Open-Loop Output Impedance Z f = 1 MHz, A = +1 22 OUT V POWER SUPPLY Supply Current/Amplifier I V = 6 V, V = 0 V 3.75 mA SY S OUT DYNAMIC PERFORMANCE Slew Rate SR R = 1 k , 1 nF 3 V/ s L Full-Power Bandwidth BWp 1% Distortion kHz Gain Bandwidth Product GBP 5 MHz Phase Margin m 69 Degrees NOISE PERFORMANCE Voltage Noise e p-p 0.1 Hz to 10 Hz 2 V p-p n Voltage Noise Density e f = 1 kHz 22 nV/Hz n Current Noise Density i 1 pA/Hz n Specifications subject to change without notice. 2 REV. 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