|Category||Analog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers => General Purpose => Dual|
|Description||Rail-to-rail High Output Current Operational Amplifier|
|Datasheet||Download OP279GRU datasheet
|Cross ref.||Similar parts: OPA2337, OPA2338, OPA2340, OPA2343, OPA27|
FEATURES Rail-to-Rail Inputs and Outputs High Output Current: 60 mA Single Supply: +12 V Wide Bandwidth: 5 MHz High Slew Rate: V/ s Low Distortion: 0.01% Unity-Gain Stable No Phase Reversal Short Circuit Protected Drives Capacitive Loads: 10 nF APPLICATIONS Multimedia Telecom DAA Transformer Driver LCD Driver Low Voltage Servo Control Modems FET DriversRail-to-Rail High Output Current Operational Amplifiers OP179/OP279
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 capability. The OP179/OP279 can sink and source currents 60 mA (typical) and are stable with capacitive loads to 10 nF. Applications that benefit from the high output current of the OP179/OP279 include driving headphones, displays, transformers 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. The OP179/OP279 can be used as a buffer to provide much greater drive capability than can usually be provided by CMOS outputs. CMOS ASICs and DAC often have outputs that can swing to both the positive supply and ground, but cannot drive more than a few milliamps. Bandwidth is typically 5 MHz and the slew rate is 3 V/µs, making these amplifiers well suited for single supply applications that require audio bandwidths when used in high gain configurations. Operation is guaranteed from voltages as low 12 V.
Very good audio performance can be attained when using the in +5 volt systems. THD is below 0.01% with a 600 load, and noise is a respectable 21 nV/Hz. Supply current is less than 3.5 mA per amplifier. The single OP179 is available in the 5-lead SOT-23-5 package. It is specified over the industrial to +85°C) temperature range. The OP279 is available in 8-lead plastic DIP, TSSOP and SO-8 surface mount packages. They are specified over the industrial to +85°C) temperature range.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999
Parameter INPUT CHARACTERISTICS Offset Voltage OP179 OP279 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier Supply Voltage Range DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin Capacitive Load Drive AUDIO PERFORMANCE Total Harmonic Distortion Voltage Noise Density
Parameter INPUT CHARACTERISTICS Offset Voltage OP179 OP279 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit Open-Loop Output Impedance POWER SUPPLY Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Full-Power Bandwidth Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise DensityV dB V/mV µV/° V mA V/µs kHz MHz Degrees µV p-p nV/Hz pA/Hz
Supply Voltage. +16 V Input Voltage. +16 V Differential Input 1 V Output Short-Circuit Duration to GND. Indefinite Storage Temperature Range P, S, RT, RU Package. to +150°C Operating Temperature Range to +85°C Junction Temperature Range P, S, RT, RU Package. to +150°C Lead Temperature Range (Soldering, 60 sec). +300°CPackage Types 5-Lead SOT-23 (RT) 8-Lead Plastic DIP (P) 8-Lead SOIC (S) 8-Lead TSSOP (RU)
NOTES 1 The inputs are clamped with back-to-back diodes. If the differential input voltage exceeds 1 volt, the input current should be limited to 5 mA. JA is specified for the worst case conditions, i.e., JA is specified for device in socket for P-DIP, packages; JA is specified for device soldered in circuit board for SOIC packages.
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the OP179/OP279 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
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