The AFE49I30 is an analog front-end for optical bio-sensing/ PPG and ECG measurement applications. The device supports up to six switching light-emitting diodes (LEDs) and up to four photodiodes. Up to 24 signal phases can be defined and the PPG or ECG signals can be acquired from each phase in a synchronized manner.

• Supports signal acquisition of up to 24 phases
• Flexible allocation of 6 LED, 4 PD in each PPG phase
• Synchronized PPG/ECG signal acquisition with each phase configurable as PPG or ECG, and at different data rates
• Synchronized PPG/ECG supports up to 1 kHz data rate
• ECG-only mode supports up to 4 kHz data rate
• PPG signal chain:
  • System SNR up to 108-dB at 16 μA PD current
  • Low current for continuous operation on a wearable device with a typical value: 15 μA for an LED, 20 μA for the receiver
• PPG Transmitter:
  • Supports common anode LED configuration
  • 8-Bit programmable LED current with range adjustable from 25 mA to 250 mA
  • Mode to fire two LEDs in parallel with independent per-phase current control
  • Programmable LED on-time per-phase
  • Simultaneous support of 6 LEDs for SpO2, HRM, or multi-wavelength HRM
• PPG Receiver:
  • Supports 4 time-multiplexed photodiode inputs
  • 2 parallel receivers to sample two PD channels simultaneously
  • Individual ambient offset subtraction DAC at each TIA Input with 8-bit per-phase control and range adjustable up to 255-μA
  • Individual LED offset subtraction DAC at each TIA input with 5-bit per-phase control and 15.5-μA range
  • Close to 100 dB ambient rejection up to 10 Hz
  • Noise filtering with programmable bandwidth
  • Transimpedance Gain: 3.7 kΩ to 1 MΩ
• ECG Signal Chain
  • 1-lead ECG with RLD output for bias
  • INA gain programmable from 1.6 – 13
  • <1 μVrms input noise (in a 1-150 Hz bandwidth) at 4-kHz sample rate
  • Integrated 450 Hz Low Pass Filter
  • AC, DC lead-off detect with 3.125-100 nA current and programmable interrupt
• Supports external clock and internal oscillator modes
• Option to acquire data synchronized with a system master clock
• Automatic cancellation of DC from ambient, LED
• FIFO with 128-sample depth
• I2C interface
• 2.6-mm × 2.1-mm DSBGA, 0.4-mm pitch
• Supplies: Rx: 1.7 V-1.9 V (LDO bypass); 1.9 V-3.6 V (LDO enabled), Tx: 3 V-5.5 V, IO: 1.7-3.6 V
• Supports operation with 2 supplies - 1.8 V, 5 V

• Applications
• Optical-HRM, 1-lead ECG
• Number of input channels
• 4
• Resolution (Bits)
• 24
• Number of LEDs
• 6
• Interface type
• I2C
• Operating temperature range (C)
• -40 to 85
• Rating
• Catalog

AFE49I30的完整型号有：AFE49I30YZR、AFE49I30YZT，以下是这些产品的关键参数及官网采购报价：

AFE49I30YZR，工作温度：-40 to 85，封装： (YZ)-30，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SAC396，TI官网AFE49I30YZR的批量USD价格：3.15（1000+）

AFE49I30YZT，工作温度：-40 to 85，封装： (YZ)-30，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SAC396，TI官网AFE49I30YZT的批量USD价格：3.78（1000+）

AFE44S30EVM — AFE4430 integrated AFE for wearable optical biosensing with FIFO and SPI evaluation module

The AFE44S30 evaluation module (EVM)is a platform for evaluating the AFE44S30 device, which is an analog front end (AFE) for optical biosensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2).AFE44S30 supports eight switching (...)

AFE49I30EVM — AFE49I30 ultra-low-power integrated AFE for wearable optical biosensing evaluation module

AFE49I30 评估模块 (EVM) 是一种用于加速和评估 AFE49I30 器件相关系统开发活动的平台。AFE49I30 模拟前端 (AFE) 适用于心率监测 (HRM) 和外周毛细血管氧饱和度 (SpO2) 测量等光学生物传感应用。

AFE49I30 支持 6 个开关发光二极管 (LED) 和 4 个光电二极管。光电二极管的电流通过跨阻放大器 (TIA) 转换为电压，并使用模数转换器 (ADC) 进行数字化。ADC 代码可存储在具有可编程深度的 128 样本 FIFO 中。可以对 FIFO 深度进行分区，以容纳需要存储的相位。可使用串行外设接口 (SPI) 对 FIFO 进行读取。

这款 (...)

BSECUR-3P-ALGORITHMS — B SECUR ECG Algorithms and Electrode Design Services

HeartKey 是一套功能强大的精确 ECG 算法，可随时集成到下一代低功耗低内存消费类/IoT 和医疗设备中，如智能手表、智能服装、医疗、汽车、智能家居设备和手持设备。HeartKey 可提供有关用户 ID、保健与健康的高级功能，由内部专家经多年研究后开发出来，这套独特算法包括获 FDA 批准的心律失常分析。请在此处查看 HeartKey 算法集的完整列表：https://www.b-secur.com/partners/texas-instruments

通过将 HeartKey 与 TI 的 AFE4950 (...)

发件人： B Secur

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)