OPA990
- Low offset voltage: ±300 µV
- Low offset voltage drift: ±0.6 µV/°C
- Low noise: 30 nV/√Hz at 1 kHz
- High common-mode rejection: 115 dB
- Low bias current: ±10 pA
- Rail-to-rail input and output
- MUX-friendly/comparator inputs
- Amplifier operates with differential inputs up to supply rail
- Amplifier can be used in open-loop or as comparator
- Wide bandwidth: 1.1-MHz GBW
- High slew rate: 4.5 V/µs
- Low quiescent current: 120 µA per amplifier
- Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
- Robust EMIRR performance: 78 dB at 1.8 GHz
- Differential and common-mode input voltage range to supply rail
The OPAx990 family (OPA990, OPA2990, and OPA4990) is a family of high voltage (40 V) general purpose operational amplifiers. These devices offer excellent DC precision and AC performance, including rail-to-rail input/output, low offset (±300 µV, typ), and low offset drift (±0.6 µV/°C, typ).
Unique features such as differential and common-mode input voltage range to the supply rail, high short-circuit current (±80 mA), high slew rate (4.5 V/µs), and shutdown make the OPAx990 an extremely flexible, robust, and high-performance op amp for high-voltage industrial applications.
The OPAx990 family of op amps is available in micro-size packages (such as X2QFN, WSON, and SOT-553), as well as standard packages (such as SOT-23, SOIC, and TSSOP), and is specified from –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 | OPAx990 40-V Rail-to-Rail Input/Output, Low Offset Voltage, Low Power Op Amp datasheet (Rev. I) | PDF | HTML | 2021/8/13 | ||
| 應用說明 | Analysis of Improved Howland Current Pump Configurations (Rev. A) | PDF | HTML | 2023/2/9 | |||
| Application brief | Using An Op Amp for High-Side Current Sensing (Rev. A) | PDF | HTML | 2021/12/7 | |||
| 應用說明 | Circuit for detecting input floating on ADS8681 ADC | PDF | HTML | 2021/3/31 | |||
| Third party document | Programmable analog output circuit maximizes industrial system flexibility | 2021/2/1 |
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 (...)
DIYAMP-EVM — 通用自製 (DIY) 放大器電路評估模組
DIYAMP-EVM 是一系列評估模組 (EVM),提供工程師與自組愛好者 (DIYers) 實作型放大器電路,協助快速驗證設計概念並模擬結果。提供三種業界標準封裝(SC70、SOT-23 和 SOIC)與 12 種常見放大器配置,支援單電源與雙電源架構的放大器、濾波器、穩定補償與比較器應用。
DIYAMP-EVM 可快速製作電路原型,並採用常見的 0805 或 0603 表面裝載元件。透過多種組合方式,此 EVM 可建立從簡單放大器電路到複雜訊號鏈的各種評估電路。此 EVM 支援模擬板、超微型 A 版 (SMA)、接頭和有線介面連接方式,並與大多數類比數位轉換器 (ADC) (...)
OPA990, OPA2990 and OPA4990 TINA-TI Reference Design (Rev. A)
OPA990, OPA2990 and OPA4990 TINA-TI SPICE Model (Rev. A)
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。
CIRCUIT060044 — 經改善的 howland 電流泵電路
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |