OPA843
- HIGH BANDWIDTH: 260MHz (G = +5)
- GAIN BANDWIDTH PRODUCT: 800MHz
- LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz
- VERY LOW DISTORTION: –96dBc (5MHz)
- HIGH OPEN-LOOP GAIN: 110dB
- FAST 12-BIT SETTLING: 10.5ns (0.01%)
- LOW INPUT OFFSET VOLTAGE: 300µV
- OUTPUT CURRENT: ±100mA
- APPLICATIONS
- ADC/DAC BUFFER AMPLIFIER
- LOW DISTORTION "IF" AMPLIFIER
- ACTIVE FILTERS
- LOW-NOISE RECEIVER
- WIDEBAND TRANSIMPEDANCE
- TEST INSTRUMENTATION
- PROFESSIONAL AUDIO
- OPA643 UPGRADE
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The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power-Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.
12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.
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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 | Wideband, Low Distortion, Medium Gain, Voltage-Feedback Operational Amp datasheet (Rev. C) | 2008/12/30 | |||
| 電子書 | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | 2017/3/28 | |||
| 應用說明 | RLC Filter Design for ADC Interface Applications (Rev. A) | 2015/5/13 | ||||
| 使用指南 | DEM-OPA-SO-1A User's Guide (Rev. B) | 2012/4/12 | ||||
| 使用指南 | DEM-OPA-SOT-1A User's Guide (Rev. B) | 2012/4/12 | ||||
| 類比設計期刊 | Using a decompensated op amp for improved performance | 2005/3/11 | ||||
| 應用說明 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005/1/17 | ||||
| 應用說明 | ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers | 2004/4/22 | ||||
| 應用說明 | Measuring Board Parasitics in High-Speed Analog Design | 2003/7/7 |
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-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 |