OPA814
- Wide bandwidth:
- Gain-bandwidth product: 250 MHz
- Bandwidth (G = 1 V/V): 600 MHz
- Large-signal bandwidth (2 V PP): 200 MHz
- Slew rate: 750 V/µs
- High precision:
- Input offset voltage: 250 µV (maximum)
- Input offset voltage drift: 3.5 µV/°C (maximum)
- Input voltage noise: 5.3 nV/√Hz
- Input bias current: 2 pA
- Low distortion (R L = 100 Ω,
V O = 2 V PP):
- HD2, HD3 at 10 MHz: –75 dBc, –85 dBc
- Supply range: 6 V to 12.6 V
- Supply current: 16 mA
- Performance upgrade to OPA656
The OPA814 is a unity-gain stable, voltage-feedback operational amplifier for high-speed, high-precision, and wide-dynamic-range applications.
The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage that features a wide gain bandwidth of 250 MHz and a supply range from 6 V to 12.6 V. The fast slew rate of 750 V/µs allows a wide large-signal bandwidth and low distortion when used as high impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.
The OPA814 offers extremely low input offset voltage of ±250 µV and offset voltage drift of ±3.5-µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3 nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment, as well as medical and scientific instrumentation.
The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | OPA814600-MHz, High-Precision, Unity-Gain Stable, FET-Input Operational Amplifier datasheet (Rev. A) | PDF | HTML | 2023/11/6 | ||
| Product overview | High Speed Amplifiers for Motor Encoders and Position Sensing | PDF | HTML | 2025/4/11 | |||
| Product overview | High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End | PDF | HTML | 2025/4/10 | |||
| Product overview | Pairing High-Speed JFET Amplifiers With Hi-Z DAQ Systems | PDF | HTML | 2024/4/8 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DEM-OPA-DTK-EVM — 採用 8 針腳 SON (DTK 和 DRG) 封裝，適用於高速、頻寬運算放大器的評估模組
DEM-OPA-DTK-EVM 是一種展示固定裝置，可協助設計人員評估高速、寬頻運算放大器的運作和性能。此未組裝的空板與以 8 針腳 SON (DTK 和 DRG) 封裝供應之單通道放大器產品相容。電路板的設計旨在配合多種放大器配置，提供最大彈性及易用性。
DEM-OPA-SO-1A — 適用於 SO-8 封裝的單路運算放大器評估模組
The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.
DEM-OPA-SOT-1A — 適用於 SOT-23 5 針腳和 6 針腳封裝的單路運算放大器評估模組
DEM-OPA-SOT-1A 是一種展示電路板，用於評估高速、寬頻運算放大器的運作和性能。此未組裝的 PC 電路板與採用小型電晶體 (SOT) DBV 封裝的產品相容。
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。
除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |