AFE4400
- Fully-Integrated Analog Front-End for Pulse Oximeter Applications:
- Flexible Pulse Sequencing and
Timing Control
- Flexible Pulse Sequencing and
- Transmit:
- Integrated LED Driver
(H-Bridge, Push, or Pull) - Dynamic Range: 95 dB
- LED Current:
- Programmable to 50 mA with 8-Bit Current Resolution
- Low Power:
- 100 µA + Average LED Current
- Programmable LED On-Time
- Independent LED2 and LED1 Current Reference
- Integrated LED Driver
- Receive Channel with High Dynamic Range:
- 13 Noise-Free Bits
- Low Power: < 670 µA at 3.3-V Supply
- Integrated Digital Ambient Estimation and Subtraction
- Flexible Receive Sample Time
- Flexible Transimpedance Amplifier with Programmable LED Settings
- Integrated Fault Diagnostics:
- Photodiode and LED Open and
Short Detection - Cable On and Off Detection
- Photodiode and LED Open and
- Supplies:
- Rx = 2.0 V to 3.6 V
- Tx = 3.0 V to 5.25 V
- Package: Compact VQFN-40 (6 mm × 6 mm)
- Specified Temperature Range: 0°C to 70°C
The AFE4400 is a fully-integrated analog front-end (AFE) ideally suited for pulse oximeter applications. The device consists of a low-noise receiver channel with an integrated analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection. The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the AFE4400, an oscillator is also integrated that functions from an external crystal. The device communicates to an external microcontroller or host processor using an SPI™ interface.
The device is a complete AFE solution packaged in a single, compact VQFN-40 package (6 mm × 6 mm) and is specified over the operating temperature range of 0°C to 70°C.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | AFE4400 Integrated Analog Front-End for Heart Rate Monitors and Low-Cost Pulse Oximeters datasheet (Rev. H) | PDF | HTML | 2014/07/24 |
White paper | Evolving Semiconductor Technologies for Modern Telehealth Applications | 2020/10/26 | ||
EVM User's guide | AFE44x0SPO2EVM User's Guide (Rev. C) | 2014/05/27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
AFE4400SPO2EVM — 심박수 모니터 및 저비용 펄스 옥시미터를 위한 AFE4400 통합 AFE 평가 모듈
The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)
AFE4490SPO2EVM — 펄스 옥시미터를 위한 AFE4490 통합 아날로그 프론트 엔드(AFE) 평가 모듈
The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)
SLAC556 — AFE44x0SPO2EVM GUI v2.4
지원되는 제품 및 하드웨어
제품
바이오센싱 AFE
하드웨어 개발
평가 보드
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 착수하기 (...)
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN (RHA) | 40 | 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
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.