OPA846
- HIGH BANDWIDTH: 400MHz (G = +10)
- LOW INPUT VOLTAGE NOISE: 1.2nV/√Hz
- VERY LOW DISTORTION: –100dBc (5MHz)
- HIGH SLEW RATE: 625V/µs
- HIGH DC ACCURACY: VIO ±150µV
- LOW SUPPLY CURRENT: 12.6mA
- HIGH GAIN BANDWIDTH PRODUCT: 1750MHz
- STABLE FOR GAINS ≥ 7
- APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW–NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW–NOISE DIFFERENTIAL RECEIVERS
- VDSL LINE RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- SECURITY SENSOR FRONT ENDS
- UPGRADE FOR THE OPA686, CLC425, AND LMH6624
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The OPA846 combines very high gain bandwidth and large signal performance with very low input voltage noise, while dissipating a low 12.6mA supply current. The classical differential input stage, along with two stages of forward gain and a high power output stage, combine to make the OPA846 an exceptionally low distortion amplifier with excellent DC accuracy and output drive. The voltage-feedback architecture allows all standard op amp applications to be implemented with very high performance.
The combination of low input voltage and current noise, along with a 1.75GHz gain bandwidth product, make the OPA846 an ideal amplifier for wideband transimpedance stages. As a voltage gain stage, the OPA846 is optimized for a flat response at a gain of +10 and is stable down to a gain of +7.
A new external compensation technique can be used to give a very flat frequency response below the minimum stable gain for the OPA846, further improving its already exceptional distortion performance. Using this compensation makes the OPA846 one of the premier 12– to 16–bit Analog–to–Digital (A/D) converter input drivers. The supply current for the OPA846 is precisely trimmed to 12.6mA at +25°C. This, along with carefully defined supply current tempco in the input and output stages, combine to provide exceptional performance over the full specified temperature range.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | Wideband, Low Noise, Voltage-Feedback Operational Amplifier datasheet (Rev. E) | 2008. 12. 30 | ||
| e북 | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | 2017. 3. 28 | ||
| 사용 설명서 | DEM-OPA-SO-1A User's Guide (Rev. B) | 2012. 4. 12 | |||
| 사용 설명서 | DEM-OPA-SO-1B User's Guide (Rev. D) | 2012. 4. 12 | |||
| 사용 설명서 | DEM-OPA-SOT-1A User's Guide (Rev. B) | 2012. 4. 12 | |||
| 애플리케이션 노트 | Transimpedance Considerations for High-Speed Operational Amplifiers | 2009. 11. 22 | |||
| 사용 설명서 | DEM-OPA-SOT-1B User's Guide (Rev. B) | 2006. 4. 12 | |||
| 아날로그 디자인 학술지 | Using a decompensated op amp for improved performance | 2005. 3. 11 | |||
| 애플리케이션 노트 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005. 1. 17 | |||
| 애플리케이션 노트 | ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers | 2004. 4. 22 | |||
| 애플리케이션 노트 | Measuring Board Parasitics in High-Speed Analog Design | 2003. 7. 7 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DEM-OPA-SO-1B — SO-8(비인버팅) 패키지를 위한 단일 연산 증폭기 평가 모듈
The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.
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DEM-OPA-SOT-1B — SOT23-5/6(비인버팅) 패키지를 위한 단일 연산 증폭기 평가 모듈
The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
아날로그 엔지니어의 계산기는 아날로그 회로 설계 엔지니어가 정기적으로 사용하는 많은 반복 계산의 속도를 높이도록 설계되었습니다. 이 PC 기반 툴은 피드백 저항을 사용한 연산 증폭기 게인 설정부터 아날로그-디지털 컨버터(ADC) 드라이브 버퍼 회로 안정화를 위한 적절한 회로 설계 요소 선택에 이르기까지 다양한 일반적인 계산 목록이 포함된 그래픽 인터페이스를 제공합니다.
이 계산기는 독립 실행형 툴로 유용할 뿐만 아니라 아날로그 엔지니어의 포켓 레퍼런스에 설명된 개념과도 잘 어울립니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |