THS4281
- Very Low Quiescent Current: 750 µA (at 5 V)
- Rail-to-Rail Input and Output:
- Common-Mode Input Voltage Extends
400 mV Beyond the Rails - Output Swings Within 150 mV From the Rails
- Common-Mode Input Voltage Extends
- Wide –3-dB Bandwidth at 5 V:
- 90 MHz at Gain = +1, 40 MHz at Gain = +2
- High Slew Rate: 35 V/µs
- Fast Settling Time (2-V Step):
- 78 ns to 0.1%
- 150 ns to 0.01%
- Low Distortion at Gain = +2, VO = 2-VPP, 5 V:
- –91 dBc at 100 kHz, –67 dBc at 1 MHz
- Input Offset Voltage: 2.5 mV (Max at +25°C)
- Output Current > 30 mA (10-Ω Load, 5 V)
- Low Voltage Noise of 12.5 nV/√Hz
- Supply Voltages: +2.7 V, 3 V, +5 V, ±5 V, +15 V
- Packages: SOT23, MSOP, and SOIC
- APPLICATIONS
- Portable/Battery-Powered Applications
- High Channel Count Systems
- ADC Buffer
- Active Filters
- Current Sensing
All other trademarks are the property of their respective owners.
Fabricated using the BiCom-II process, the THS4281 is a low-power, rail-to-rail input and output, voltage-feedback operational amplifier designed to operate over a wide power-supply range of 2.7-V to 15-V single supply, and ±1.35-V to ±7.5-V dual supply. Consuming only 750 µA with a unity gain bandwidth of 90 MHz and a high 35-V/µs slew rate, the THS4281 allows portable or other power-sensitive applications to realize high performance with minimal power. To ensure long battery life in portable applications, the quiescent current is trimmed to be less than 900 µA at +25°C, and 1 mA from –40°C to +85°C.
The THS4281 is a true single-supply amplifier with a specified common-mode input range of 400 mV beyond the rails. This allows for high-side current sensing applications without phase reversal concerns. Its output swings to within 40 mV from the rails with 10-kΩ loads, and 150 mV from the rails with 1-kΩ loads.
The THS4281 has a good 0.1% settling time of 78 ns, and 0.01% settling time of 150 ns. The low THD of –87 dBc at 100 kHz, coupled with a maximum offset voltage of less than 2.5 mV, makes the THS4281 a good match for high-resolution ADCs sampling less than 2 MSPS.
The THS4281 is offered in a space-saving SOT23-5 package, a small MSOP-8 package, and the industry standard SOIC-8 package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 | |
|---|---|---|---|---|---|---|
| * | 데이터 시트 | THS4281 Very Low-Power, High-Speed, Rail-to-Rail Input and Output Voltage-Feedback Operational Amplifier datasheet (Rev. B) | PDF | HTML | 2015. 10. 30 | ||
| e북 | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | 2017. 3. 28 | |||
| 백서 | Voltage-reference impact on total harmonic distortion | 2016. 8. 1 | ||||
| 기술 문서 | When to use an amplifier with rail-to-rail inputs – and what to watch out for | PDF | HTML | 2016. 6. 30 | |||
| 애플리케이션 노트 | Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 | 2009. 6. 24 | ||||
| 아날로그 디자인 학술지 | Designing for low distortion with high-speed op amps | 2005. 3. 2 | ||||
| 애플리케이션 노트 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005. 1. 17 | ||||
| 애플리케이션 노트 | Voltage Feedback vs. Current Feedback Op Amps | 1998. 11. 30 |
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |