OPA328
- Precision with zero-crossover distortion:
- Low offset voltage: 50µV (maximum)
- High CMRR: 120dB
- Rail-to-rail I/O
- Wide bandwidth: 40MHz
- Low input bias current: 1pA (maximum)
- Low noise: 6.1nV/√Hz at 10kHz
- Slew rate: 30V/µs
- Fast 0.01% settling time: 180ns
- Single-supply voltage range: 2.2V to 5.5V
- Unity-gain stable
The single-channel OPA328, dual-channel OPA2328 and quad-channel OPA4328 (OPAx328) are a new generation family of precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth.
The OPAx328 have a linear input stage with zero-crossover distortion that delivers excellent common-mode rejection ratio (CMRR) of 120dB (typical) over the full input range. The input common-mode voltage range extends 100mV beyond the negative and positive supply rails. The output voltage typically swings within 10mV of the rails.
The OPAx328 also use Texas Instrument’s proprietary e‑trim™ operational amplifier technology, enabling a unique combination of ultra-low offset and low input offset drift without the need for any input switching or auto-zero techniques.
Low-noise (6.1nV/√Hz) and high-speed operation (40MHz, 30V/µs) make these devices a great choice for driving sampling analog-to-digital converters (ADCs).
The OPAx328 are also a great choice for high-impedance-input, single-supply applications. Low input bias current and low input capacitance allows for high-frequency transimpedance gains at low photocurrent operation (< 1nA).
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 | OPAx328 Precision, 40MHz, 1pA, Low-Noise, RRIO, CMOS Operational Amplifiers With Shutdown datasheet (Rev. G) | PDF | HTML | 2026/3/9 | ||
| 類比設計期刊 | 選擇精密運算放大器作為 ADC 驅動器 | PDF | HTML | 2026/5/8 | |||
| Application brief | Why Use an FDA to Drive an ADC? | PDF | HTML | 2026/1/8 | |||
| 白皮書 | Op Amp Offset Voltage and Bias Current Limitations | PDF | HTML | 2024/11/5 | |||
| Circuit design | Bipolar-to-Unipolar Level Translator Circuit, ±12 V to 0 V to 5 V | PDF | HTML | 2023/12/18 | |||
| 白皮書 | Op Amp Input and Output Swing Limitations | PDF | HTML | 2023/12/7 | |||
| 應用說明 | Impact of Current Noise in CMOS and JFET Amplifiers | PDF | HTML | 2023/5/4 | |||
| 應用說明 | Reference-Buffer, ADC-Driver, and Transimpedance Applications for OPAx328 | PDF | HTML | 2022/11/19 |
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)
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 |
|---|---|---|
| SOT-23 (DBV) | 5 | 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。