OPA810
- Gain-bandwidth product: 70MHz
- Small-signal bandwidth: 140MHz
- Slew rate: 200V/µs
- Wide supply range: 4.75V to 27V
- Low noise:
- Input voltage noise: 6.3nV/√Hz (f = 500kHz)
- Input current noise: 5fA/√Hz (f = 10kHz)
- Rail-to-rail input and output:
- FET input stage: 2pA input bias current (typical)
- High linear output current: 75mA
- Input offset: ±500µV (maximum)
- Offset drift: ±2.5µV/°C (typical)
- Low power: 3.7mA/channel
- Extended temperature range: –40°C to +125°C
- Dual-channel version: OPA2810
The OPA810 is a single-channel, field-effect transistor (FET) input, voltage-feedback operational amplifier with bias current in the picoampere (pA) range. The OPA810 is unity-gain stable with a small-signal, unity-gain bandwidth of 140MHz, and offers excellent dc precision and dynamic ac performance at a low quiescent current (IQ) of 3.7mA per channel. The OPA810 is fabricated on Texas Instruments’ proprietary, high-speed SiGe BiCMOS process and achieves significant performance improvements over comparable FET-input amplifiers at similar levels of quiescent power. With a gain-bandwidth product (GBWP) of 70MHz, slew rate of 200V/µs, and low-noise voltage of 6.3nV/√Hz, the OPA810 is designed for use in a wide range of high-fidelity data-acquisition and signal-processing applications.
The OPA810 features rail-to-rail inputs and outputs, and delivers 75mA of linear output current designed to drive optoelectronic components and analog-to-digital converter (ADC) inputs or buffer digital-to-analog converter (DAC) outputs into heavy loads.
The OPA810 is specified over the extended industrial temperature range of –40°C to +125°C. The OPA2810 is a dual-channel variant of the OPA810, available in 8-pin SOIC, SOT-23, and VSSOP packages.
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 | OPA810 140MHz, Rail-to-Rail Input and Output, FET-Input Operational Amplifier datasheet (Rev. E) | PDF | HTML | 2024/8/28 | ||
| Application brief | High Speed Current Sensing for Data Center mCRPS Standards | PDF | HTML | 2026/4/7 | |||
| Product overview | High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End | PDF | HTML | 2025/4/10 | |||
| 設計指南 | LCR Meter Analog Front-End Reference Design (Rev. B) | PDF | HTML | 2021/12/21 | |||
| Application brief | Optimizing LCR Meter Front-End Design for Accurate Impedance Measurements | PDF | HTML | 2021/1/20 | |||
| 設計指南 | Cascaded high-gain active LPF reference design for high-impedance applications (Rev. B) | PDF | HTML | 2019/9/26 |
設計與開發
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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.
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 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOT-SC70 (DCK) | 5 | Ultra Librarian |