The single-channel OPA1677, dual-channel OPA1678, and quad-channel OPA1679 (OPA167x) op amps offer higher system-level performance over legacy op amps commonly used in audio circuitry.
The OPA167x amplifiers achieve a low 4.5-nV/√Hz noise density and low distortion of 0.0001% at 1 kHz, which improves audio signal fidelity. These devices also offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range.
To accommodate the power-supply constraints of many types of audio products, the OPA167x operate over a very-wide supply range of ±2.25 V to ±18 V (or 4.5 V to 36 V) on only 2 mA of supply current. These op amps are unity-gain stable and have excellent dynamic behavior over a wide range of load conditions, allowing the OPA167x to be used in many audio circuits.
The OPA167x amplifiers use completely independent internal circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.
| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | OPA167x Low-Distortion Audio Operational Amplifiers datasheet (Rev. E) | PDF | HTML | 2022年 12月 22日 |
| Circuit design | Active-filtering circuit for audio DACs (Rev. A) | PDF | HTML | 2024年 9月 18日 | |
| Application brief | Understanding Op Amp Noise in Audio Circuits | PDF | HTML | 2021年 6月 14日 | |
| Application note | Phantom Power with Operational Amplifiers (Rev. A) | 2018年 11月 9日 | ||
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
| Application note | Compensate Transimpedance Amplifiers Intuitively (Rev. A) | 2005年 3月 30日 |
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放大器性能開發套件 (PDK) 是一款評估模組 (EVM) 套件，可測試通用運算放大器 (op amp) 參數，並與大多數運算放大器和比較器相容。EVM 套件提供主板和多個插槽式子卡選項，可滿足封裝需求，使工程師能夠快速評估和驗證裝置性能。
AMP-PDK-EVM 套件支援五種最熱門的業界標準封裝，包括：
Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.
The (...)
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (DRG) | 8 | Ultra Librarian |
Analog Engineer's Calc Installer
General calculator tool for analog design support.