데이터 시트
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
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8개 모두 보기 | 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | THS4281 Very Low-Power, High-Speed, Rail-to-Rail Input and Output Voltage-Feedback Operational Amplifier datasheet (Rev. B) | PDF | HTML | 2015/10/30 |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017/03/28 | ||
| White paper | Voltage-reference impact on total harmonic distortion | 2016/08/01 | ||
| Technical article | When to use an amplifier with rail-to-rail inputs – and what to watch out for | PDF | HTML | 2016/06/30 | |
| Application note | Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 | 2009/06/24 | ||
| Analog Design Journal | Designing for low distortion with high-speed op amps | 2005/03/02 | ||
| Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 2005/01/17 | ||
| Application note | Voltage Feedback vs. Current Feedback Op Amps | 1998/11/30 |
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계산 툴
VOLT-DIVIDER-CALC — Voltage divider calculation tool
The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
시뮬레이션 툴
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.
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사용 설명서: PDF
레퍼런스 디자인
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This TI Verified Design is the realization of a high precision, 16-bit 1MSPS data acquisition system suitable for applications such as digital audio that require front-ends with very low distortion and noise. The circuit uses a high performance Successive Approximation Register Analog to Digital (...)
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TIPD115 — 왜곡 최소화를 위해 최적화된 데이터 수집, 최저잡음, 18비트, 1Msps 레퍼런스 디자인
This verified design is a high performance data acquisition system (DAQ) using an 18-bit SAR ADC, ADS8881 at a throughput of 1MSPS. This design has been optimized to provide the lowest noise & distortion solution for a full scale input sinewave of 10 KHz. This leads to a maximum possible value (...)
레퍼런스 디자인
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레퍼런스 디자인
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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 |
주문 및 품질
포함된 정보:
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
포함된 정보:
- 팹 위치
- 조립 위치