OP179/OP279 is a high output current operational amplifier launched by TI, which has the characteristics of single power supply, low distortion, wide common-mode range and high output current. It is suitable for applications such as level conversion, driving headphones, display screens, transformers and power transistors
The OP179 and OP279 are single‑supply, rail‑to‑rail operational amplifiers designed for low‑voltage applications that require high output current and the ability to drive capacitive loads. They can source and sink up to ±60 mA typical current and are stable with loads up to 10 nF, making them suitable for headphones, displays, transformers, and power transistors.
The devices operate from a 4.5 V to 12 V supply, offer a 5 MHz gain‑bandwidth product, 3 V/µs slew rate, and low distortion (THD < 0.01 %). Additional features include short‑circuit protection, ESD protection, and a wide common‑mode range. The OP179 is offered in a 5‑lead SOT‑23‑5 package, while the OP279 is available in 8‑lead SOIC, TSSOP, and SO‑8 packages.
| Supply Voltage Range | 4.5 V to 12 V |
|---|---|
| Bandwidth | 5 MHz |
| Slew Rate | 3 V/µs |
| Total Harmonic Distortion (THD) | < 0.01 % (600 Ω load) |
| Supply Current per Amplifier | < 3.5 mA |
| Input Offset Voltage (OP179) | ±5 mV |
It recovers in about 1 µs from positive saturation and about 1.2 µs from negative saturation.
The devices operate from 4.5 V up to 12 V supply voltage.
Total harmonic distortion is below 0.01 % with a 600 Ω load.