THS4531
- Ultra Low Power:
- Voltage: 2.5 V to 5.5 V
- Current: 250 µA
- Power-Down Mode: 0.5 µA (typical)
- Fully-Differential Architecture
- Bandwidth: 36 MHz
- Slew Rate: 200 V/µs
- THD: –120 dBc at 1 kHz (1 VRMS, RL= 2 kΩ)
- Input Voltage Noise: 10 nV/√Hz (f = 1 kHz)
- High DC
Accuracy:
- VOS Drift: ±4 µV/˚C (–40°C to +125°C)
- AOL: 114 dB
- Rail-to-Rail Output (RRO)
- Negative Rail Input (NRI)
- Output Common-Mode Control
The THS4531 is a low-power, fully-differential op amp with input common-mode range below the negative rail and rail-to-rail output. The device is designed for low-power data acquisition systems and high density applications where power consumption and dissipation is critical.
The device features accurate output common-mode control that allows for dc coupling when driving analog-to-digital converters (ADCs). This control, coupled with the input common-mode range below the negative rail and rail-to-rail output, allows for easy interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ) ADCs using only single-supply 2.5 V to 5 V power. The THS4531 is also a valuable tool for general-purpose, low-power differential signal conditioning applications.
The THS4531 is characterized for operation over the extended industrial temperature range from –40°C to +125°C. The following package options are available:
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 | Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier datasheet (Rev. C) | PDF | HTML | 2020/3/4 | ||
| Application brief | Why Use an FDA to Drive an ADC? | PDF | HTML | 2026/1/8 | |||
| Application brief | Active Filter Design for Differential ADCs (Rev. A) | PDF | HTML | 2025/10/8 | |||
| 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 | Fully-Differential Amplifiers (Rev. E) | 2016/9/19 | ||||
| 技術文章 | Designing an EMC-compliant interface to motor position encoders – Part 5 | PDF | HTML | 2015/11/10 | |||
| 類比設計期刊 | Using fully differential op amps as attenuators, Part 3 | 2009/10/4 | ||||
| 類比設計期刊 | Using fully differential op amps as attenuators, Part 2 | 2009/7/14 | ||||
| 類比設計期刊 | Using fully differential op amps as attenuators, Part 1 | 2009/5/1 | ||||
| 類比設計期刊 | Analysis of fully differential amplifiers | 2005/3/11 | ||||
| 類比設計期刊 | Designing for low distortion with high-speed op amps | 2005/3/2 | ||||
| 應用說明 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005/1/17 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RUN) | 10 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |