TLV2221
- Output Swing Includes Both Supply Rails
- Low Noise: 19nV/√ Hz Typical at f = 1kHz
- Low Input Bias Current: ±10pA Typical
- Fully Specified for Single-Supply 3V and 5V Operation
- Very Low Power: 130µA Typical
- Common-Mode Input Voltage Range Includes Negative Rail
- Wide Supply Voltage Range: 2.7V to 10V
The TLV2221 is a single low-voltage operational amplifier available in the SOT-23 package. TLV2221 offers a compromise between the ac performance and output drive of the TLV2231 and the micro-power TLV2211.
TLV2221 consumes only 150µA (max) of supply current and is designed for battery-powered applications. The device exhibits rail-to-rail output performance for increased dynamic range in single- or split-supply applications.
The TLV2221, exhibiting high input impedance and low noise, is excellent for small-signal conditioning for high-impedance sources, such as piezoelectric transducers. Because of the micro-power dissipation levels combined with 3V operation, these devices work well in hand-held monitoring and remote-sensing applications. In addition, the rail-to-rail output feature with single or split supplies makes this family a great choice when interfacing with analog-to-digital converters (ADCs).
With a total area of 5.6mm2, the SOT-23 package only requires one-third the board space of the standard 8-pin SOIC package. This ultra-small package allows designers to place single amplifiers very close to the signal source, minimizing noise pick-up from long printed circuit board (PCB) traces. TI has also taken special care to provide a pinout that is optimized for board layout (see Typical Surface-Mount Layout for a Fixed-Gain Non-inverting Amplifier). Both inputs are separated by GND to prevent coupling or leakage paths. The OUT and IN− terminals are on the same end of the board to provide negative feedback. Finally, gain setting resistors and decoupling capacitor are easily placed around the package.
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 | TLV2221, TLV2221Y Advanced LinCMOS Rail-to-Rail Very Low-power Single Operational Amplifiers datasheet (Rev. C) | PDF | HTML | 2026/5/19 | ||
| 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 | Use of Rail-to-Rail Operational Amplifiers (Rev. A) | 1999/12/22 |
設計與開發
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