LMP8278Q-Q1
- TCVos ±15μV/°C Max
- CMRR 80 dB Min
- Input Offset Voltage ±2 mV max
- CMVR −2V to 40V
- Operating Ambient Temperature Range −40°C to 125°C
- Single Supply Operation
- Min / Max Limits 100% Tested unless Otherwise Noted
- LMP8278Q Available in Automotive AEC-Q100 Grade 1 Qualified Version
All trademarks are the property of their respective owners.
The LMP8278 is a fixed 14x gain precision current sense amplifier. The part amplifies and filters small differential signals in the presence of high common mode voltages. The part operates from a single 5V supply voltage. With an input common mode voltage range from -2V to +28V the gain is very precise (±0.5%). The part can handle common mode voltages in the range -2V to +40V with relaxed specifications. The LMP8278 is a member of the Linear Monolithic Precision (LMP) family and is ideal for unidirectional current sensing applications. The parameter values that are shown in the Electrical Characteristics table are 100% tested and all bold values are also 100% tested over temperature, unless otherwise noted.
The part has a precise gain of 14x which is adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 7x and an output stage buffer amplifier with a gain of 2x. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain as described in .
The LMP8278Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LMP8278Q High Mode, 14 x Gain, Precision Sensing Amplifier datasheet (Rev. A) | 2013/03/22 | |
E-book | An Engineer's Guide to Current Sensing (Rev. B) | 2022/04/12 | ||
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 2022/01/25 | |
EVM User's guide | AN-2223 LMP8278Q MSOP Evaluation Board User’s Manual (Rev. A) | 2013/04/26 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LMP8278MMEVAL — LMP8278MM 평가 보드
The LMP8278Q Evaluation Board is designed to evaluate the LMP8278Q current sense amplifier.
CIRCUIT060035 — 윈도우 콤퍼레이터 회로를 사용한 양방향 전류 감지
CIRCUIT060037 — 정밀 과전류 래치 회로
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TINA-TI — SPICE 기반 아날로그 시뮬레이션 프로그램
TIDA-00302 — 과도 안정성을 갖춘 전류 션트 모니터 레퍼런스 디자인
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치