OPA2990
- 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.
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設計與開發
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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 (...)
DUAL-DIYAMP-EVM — 用於 SOIC 封裝的雙通道通用自製 (DIY) 放大器電路評估模組
DUAL-DIYAMP-EVM 是一系列評估模組 (EVM),提供工程師與自組愛好者 (DIYer) 實作型放大器電路,協助快速評估設計概念並驗證模擬結果。其是專為採用業界標準 SOIC-8 封裝的雙封裝運算放大器而設計。其可實現反向及非反向放大器、Sallen key 濾波器、多回饋濾波器、含參考緩衝器的差動放大器、含雙回饋的 Riso、單端輸入至差動輸出、差動輸入至差動輸出、雙運算放大器儀器放大器和並聯運算放大器。
DUAL-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 (...)
SMALL-AMP-DIP-EVM — 適用於採用小尺寸封裝之運算放大器的評估模組
SMALL-AMP-DIP-EVM 提供快速簡易方式,與許多業界標準小型封裝進行介接,因而加速小型封裝運算放大器原型設計。SMALL-AMP-DIP-EVM 支援八個小型封裝選項,包括 DPW-5 (X2SON)、DSG-8 (WSON)、DCN-8 (SOT)、DDF-8 (SOT)、RUG-10 (X2QFN)、RUC-14 (X2QFN)、RGY-14 (VQFN) 和 RTE-16 (WQFN)。
Collection of test circuits in TINA-TI to accompany AN1516 (Rev. A)
OPA990, OPA2990 and OPA4990 TINA-TI Reference Design (Rev. A)
OPA990, OPA2990 and OPA4990 TINA-TI SPICE Model (Rev. A)
TINA-TI Simulation Companion for High-side Current-sensing Circuit (Rev. B)
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。
CIRCUIT060005 — 具有離散差分放大器電路的高壓側電流感測
CIRCUIT060045 — 具有緩衝器電路且經改善的 howland 電流泵電路
SBOC534 — Simulation for Non-Inverting Summing Amplifier in AN-31
SBOC554 — Simulation for Wien Bridge Oscillator with Automatic Gain Control in AN-31
SBOC559 — Simulation for Current Source in AN-31
SBOC563 — Simulation for Instrumentation Amplifier in AN-31
SBOC564 — Simulation for Variable Gain Instrumentation Amplifier in AN-31
SBOC565 — Simulation for Instrumentation Amp with ±100 Volt Common Mode Range in AN-31
SBOC566 — Simulation for Instrumentation Amp with ±10 Volt Common Mode Range in AN-3
SBOC571 — Simulation for AC to DC Converter in AN-31
SBOC584 — Simulation for Current Monitor in AN-31
SBOC586 — Simulation for Power Booster in AN-31
SBOC593 — Simulation for Multiplier/Divider in AN-31
TIDA-010065 — 基於高效、低排放、隔離式 DC/DC 轉換器的類比輸入模組參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
| TSSOP (PW) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| X2QFN (RUG) | 10 | Ultra Librarian |
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
| VSSOP (DGS) | 10 | Ultra Librarian |