INA250
- Precision Integrated Shunt Resistor:
- Shunt Resistor: 2 mΩ
- Shunt Resistor Tolerance: 0.1% (Max)
- 15 A Continuous from –40°C to 85°C
- 0°C to 125°C Temperature Coefficient: 10 ppm/°C
- High Accuracy:
- Gain Error (Shunt and Amplifier): 0.3% (Max)
- Offset Current: 50 mA (Max, INA250A2)
- Four Available Gains:
- INA250A1: 200 mV/A
- INA250A2: 500 mV/A
- INA250A3: 800 mV/A
- INA250A4: 2 V/A
- Wide Common-Mode Range: –0.1 V to 36 V
- Specified Operating Temperature: –40°C to 125°C
The INA250 is a voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high-side current-shunt monitor that allows an external reference to be used to measure current flowing in both directions through the internal current-sensing resistor sensor. The integration of the precision current-sensing resistor provides calibration equivalent measurement accuracy with ultra-low temperature drift performance and ensures an optimized Kelvin layout for the sensing resistor is always obtained.
The INA250 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of 125°C. The INA250 operates from a single 2.7-V to 36-V supply and draws a maximum of 300 µA of supply current. All INA250 gain versions are specified over the extended operating temperature range (–40°C to 125°C), and are available in a TSSOP-16 package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | INA250 36-V, Bidirectional, Precision Current Sense Amplifier With Integrated Shunt Resistor datasheet (Rev. C) | PDF | HTML | 2023. 9. 13 | |
| 애플리케이션 노트 | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 2024. 11. 18 | ||
| Application brief | Integrating the Current Sensing Resistor (Rev. D) | PDF | HTML | 2023. 4. 7 | ||
| e북 | An Engineer's Guide to Current Sensing (Rev. B) | 2022. 4. 12 | |||
| 선택 가이드 | Current Sense Amplifiers (Rev. E) | 2021. 9. 20 | |||
| Application brief | Precision, Low-Side Current Measurement (Rev. B) | 2019. 3. 6 | |||
| Application brief | Integrated-Resistor Current Sensors Simplify PCB Design | 2017. 6. 30 | |||
| Application brief | Benefits of Intergated Low Inductive Shunt for PWM Applications | 2017. 6. 17 | |||
| 기술 문서 | How to get started with current sense amplifiers – part 3 | PDF | HTML | 2015. 7. 9 | ||
| 설계 가이드 | 30-A Range Bidirectional Current Shunt Monitor Design Guide | 2015. 6. 30 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
INA250EVM — INA250 전류 션트 모니터 평가 모듈
INA250 is a family of current shunt monitor with integrated shunt. The INA250EVM (INA250AxEVM) is intended to provide basic functional evaluation of INA250A1, INA250A2, INA250A3 and INA250A4 devices in the family. The fixture layout is not intended to be a model for the target circuit, nor is it (...)
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.
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
TIDA-00302 — 과도 안정성을 갖춘 전류 션트 모니터 레퍼런스 디자인
This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
TIDA-00614 — 30A 범위 양방향 전류 션트 모니터 레퍼런스 디자인
This verified design can accurately measure current across a range of 30 A on a bus that carries up to 36-V common mode voltage over a range of -40°C to +85°C. This design can measure current from 0 A to 30 A with a grounded reference or -30 A to 0 A with a 16-V reference. The (...)
TIDA-010011 — 보호 릴레이 프로세서 모듈을 위한 고효율 전원 공급 장치 아키텍처 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |