OPA2387
- Ultra-low offset voltage: ±2 µV (maximum, tested)
- Zero drift: ±0.003 µV/°C
- Low-input bias current: 150 pA (maximum, tested)
- Low noise: 8.5 nV√ Hz at 1 kHz
- No 1/f noise: 177 nV PP (0.1 Hz to 10 Hz)
- Common-mode input range ±100 mV beyond supply rails
- Gain bandwidth: 5.7 MHz
- Quiescent current: 570 µA per amplifier
- Single supply: 1.7 V to 5.5 V
- Dual supply: ±0.85 V to ±2.75 V
- EMI and RFI filtered inputs
The OPA387, OPA2387, and OPA4387 ( OPAx387) family of precision amplifiers offers state-of-the-art performance. With zero-drift technology, the OPAx387 offset voltage and offset drift provide unparalleled long-term stability. With a mere 570 µA of quiescent current, the OPAx387 are able to achieve 5.7 MHz of bandwidth, a broadband noise of 8.5 nV/√ Hz, and a 1/f noise at 177 nV PP. These specifications are crucial to achieve extremely-high precision and no degradation of linearity in 16-bit to 24-bit analog to digital converters (ADCs). The OPAx387 feature flat bias current over temperature; therefore, little to no calibration is needed in high input impedance applications over temperature.
All versions are specified over the industrial temperature range of –40°C to +125°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 | OPAx387 Ultra-High Precision, Zero-Drift, Low-Input-Bias-Current Op Amps datasheet (Rev. G) | PDF | HTML | 2023/9/21 | ||
| 應用說明 | Optimizing CMRR in Differential Amplifier Circuits With Precision Matched Resist | PDF | HTML | 2023/11/3 | |||
| 應用說明 | High Accuracy Wheatstone Bridge Amplifier Circuit to 4-20-mA Current Loop Transm | PDF | HTML | 2023/9/28 | |||
| 應用說明 | Second Order Shelving Filter to Improve DC in AC Sensing | PDF | HTML | 2023/8/24 | |||
| 技術文章 | How to achieve microvoltage-level precision in thermopile applications | PDF | HTML | 2021/12/9 | |||
| Application brief | Zero-Drift Amplifiers: Features and Benefits (Rev. C) | 2021/1/28 | ||||
| Application brief | Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) | PDF | HTML | 2020/12/8 |
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)。
AMP-PDK-EVM — 放大器性能開發套件評估模組
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：
- D (SOIC-8 和 SOIC-14)
- PW (TSSOP-14)
- DGK (VSSOP-8)
- DBV (SOT23-5 和 SOT23-6)
- DCK (SC70-5 和 SC70-6)
DIP-ADAPTER-EVM — DIP 轉接器評估模組
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 (...)
WINSE-3P-ZRT512C-R454B-TI — WINSE R454B 冷媒感測器模組
ZRT512C-R454B-4-A 冷媒感測器模組是一款智慧型紅外線型感測器模組，內建 TI MCU 和類比裝置，採用非分散紅外線 (NDIR) 原則偵測是否存在冷媒，具有良好的選擇性且不依賴於氧氣。這是一款精巧的高性能感測器模組，結合成熟的紅外線氣體偵測技術與微型機械加工及精密電路設計打造而成。該產品易於使用，性能卓越。
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。
OPAMP-NOISECALC — Noise Calculator
This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
- A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
| 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 (DSG) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。