AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：714.86 Kbytes 頁數(shù)：11 Pages

TI

德州儀器

AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：704.72 Kbytes 頁數(shù)：10 Pages

TI

德州儀器

絲?。?strong>AFE4432；Package：DSBGA；AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：704.72 Kbytes 頁數(shù)：10 Pages

TI

德州儀器

絲?。?strong>AFE4432；Package：DSBGA；AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：714.86 Kbytes 頁數(shù)：11 Pages

TI

德州儀器

絲?。?strong>AFE4432；Package：DSBGA；AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：714.86 Kbytes 頁數(shù)：11 Pages

TI

德州儀器

絲印：AFE4432；Package：DSBGA；AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：704.72 Kbytes 頁數(shù)：10 Pages

TI

德州儀器

具有 FIFO 且適用于可穿戴設(shè)備光學(xué)生物傳感的超小型、超低功耗、高 SNR 集成式 AFE

AFE4432 是一款面向諸如心率監(jiān)測 (HRM) 和周圍毛細血管氧飽和度 (SpO2) 測量等光學(xué)生物傳感應(yīng)用的模擬前端。該器件支持多達 4 個開關(guān)發(fā)光二極管 (LED) 和三個光電二極管 (PD)。AFE 配有兩個帶 8 位電流控制的 LED 驅(qū)動器。該器件具有寬動態(tài)范圍的發(fā)送和接收電路，有助于檢測超小信號電平?？啥x多達 12 個信號相位集，每個相位集都包含 LED 和環(huán)境相位的組合。接收器輸入端的低噪聲失調(diào) DAC 可自動控制，從而消除環(huán)境光和 LED 光產(chǎn)生的直流。在各相位中，PD 所產(chǎn)生的電流先經(jīng) TIA 轉(zhuǎn)換為電壓，再濾波，然后使用通用 ADC 進行數(shù)字化。ADC 代碼可存儲在 ? 支持多達 12 個相位集的信號采集\n? 在每個相位內(nèi)均可實現(xiàn)靈活的 LED 和 PD 分配\n? 精確、連續(xù)的 PPG 監(jiān)測： \n? 在 0.5Hz - 10Hz 頻帶內(nèi)的峰值系統(tǒng) SNR 為 115dB，可實現(xiàn)高精度 SpO2 測量\n? 發(fā)送器： \n? 可點亮兩個并聯(lián) LED 且具有獨立的每相位電流控制功能的模式\n? 同時支持 4 個 LED，適用于 SpO2、多波長 HRM\n? 接收器： \n? 2 個并行接收器（2 組 TIA/濾波器）\n? 每個 TIA 輸入端具有單獨的 LED 失調(diào)電壓消減 DAC，各相控制均為 9 位，范圍為 64μA\n? 具有可編程帶寬的噪聲濾;

TI

德州儀器

AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：704.72 Kbytes 頁數(shù)：10 Pages

TI

德州儀器

AFE4432 Ultra-Small, Integrated AFE for Optical Bio-Sensing

1 Features ? Supports signal acquisition of up to 12 phase sets ? Supports up to 4 LEDs, 3 PDs ? Flexible allocation of LEDs, PDs in each phase ? Simultaneous signal acquisition from different sensors at different data rates ? Accurate, continuous PPG monitoring: – Low current for continuou

文件：704.72 Kbytes 頁數(shù)：10 Pages

TI

德州儀器