AFE44I31YZR [TI]

用于可穿戴设备光学生物传感、具有 FIFO 和 I2C 的超低功耗集成模拟前端 (AFE) | YZ | 30 | -40 to 85;
AFE44I31YZR
型号: AFE44I31YZR
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

用于可穿戴设备光学生物传感、具有 FIFO 和 I2C 的超低功耗集成模拟前端 (AFE) | YZ | 30 | -40 to 85

先进先出芯片
文件: 总5页 (文件大小:386K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Support &  
Community  
Product  
Folder  
Order  
Now  
Tools &  
Software  
Technical  
Documents  
AFE44I30  
ZHCSKR8 FEBRUARY 2020  
用于多传感器可穿戴设备、光学心率监测和生物传感且具有 FIFO 的  
AFE44I30 超小型集成式 AFE  
1 特性  
2 应用  
1
支持多达 24 个相位的信号采集  
用于可穿戴设备和耳戴式设备的光学心率监测  
(HRM)  
在每个相位内均可实现灵活的 6 LED4 PD  
分配  
心率变异分析 (HRV)  
脉动式血氧计 (SpO2) 测量  
从不同的传感器以不同的数据速率同时采集信号  
精确、连续的心率监测:  
3 说明  
16μA PD 电流下系统 SNR 高达 108dB  
AFE44I30 是一款模拟前端,适用于光学生物传感 应  
用,例如心率监测 (HRM) 和周围毛细血管氧饱和度  
(SpO2) 测量。该器件支持多达六个可切换发光二极管  
(LED) 和四个光电二极管。可以定义多达 24 个信号相  
位,并且能够以同步方式从每个相位获取信号。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  
128 样本的先入先出 (FIFO) 块中。可以使用 I2C 接口  
FIFO 进行读取。这款 AFE 还配有带 8 位电流控制  
的全集成 LED 驱动器。该器件具有宽动态范围的发送  
和接收电路,有助于感测超小信号电平。  
以低电流在可穿戴设备上持续运行,其典型值  
为:LED 15μA,接收器为 20μA  
发送器:  
支持共阳极 LED 配置  
8 位可编程 LED 电流,可调范围为 25mA 至  
250mA  
可点亮两个并联 LED 且具有独立的每相位电流  
控制功能的模式  
每相位可编程 LED 导通时间  
同时支持 6 LED,适用于 SpO2HRM 或多  
波长 HRM  
接收器:  
器件信息(1)  
支持 4 路时分多路复用光电二极管输入  
器件型号  
AFE44I30  
封装  
封装尺寸(标称值)  
2 个并行接收器(两组 TIA/滤波器)  
DSBGA (30)  
2.60mm × 2.10mm  
每个 TIA 输入端具有单独的环境失调电压消减  
DAC,具有 8 位的每相位控制功能和高达  
255μA 的可调范围  
(1) 如需了解所有可用封装,请参阅数据表末尾的可订购产品附  
录。  
每个 TIA 输入端具有单独的 LED 失调电压消减  
DAC,具有 5 位的每相位控制功能和 15.5µA  
的范围  
简化原理图  
RX_SUP  
EN_LDO_BYP  
TX_SUP  
TX1  
TX2  
TX3  
TX4  
TX7  
TX8  
ALDO_1V8,  
DLDO_1V8  
接近 100dB 的环境抑制,频率高达 10Hz  
具有可编程带宽的噪声滤波功能  
跨阻增益:3.7kΩ 1MΩ  
1.8-V LDO  
LED_DRV1  
LED_DRV2  
INP1  
INM1  
I2  
C
Threshold  
Detection  
I2  
C
Cf1  
支持外部时钟和内部振荡器模式  
可选择以与系统主时钟同步的方式获取数据  
自动环境、LED 直流消除  
INP2  
INM2  
Rf1  
Noise  
Reduction  
Filter  
+
TIA1  
œ
+
Processing,  
Decimation Filters  
ADC  
FIFO  
œ
INP3  
INM3  
Rf1  
ADC_RDY  
GPIO2  
4 MHz  
Oscillator  
INP4  
INM4  
Cf1  
Timing Engine  
AACM  
采样深度为 128 FIFO  
I2C 接口  
2
PPG RX Channels  
128 kHz  
Oscillator  
CLK  
2.6mm × 2.1mm DSBGA 封装,0.4mm 间距  
电源:Rx1.7V-1.9VLDO 旁路);1.9V-  
3.6VLDO 启用),Tx3V-5.5VIO1.7-3.6V  
1
本文档旨在为方便起见,提供有关 TI 产品中文版本的信息,以确认产品的概要。 有关适用的官方英文版本的最新信息,请访问 www.ti.com,其内容始终优先。 TI 不保证翻译的准确  
性和有效性。 在实际设计之前,请务必参考最新版本的英文版本。  
English Data Sheet: SBASA32  
 
AFE44I30  
ZHCSKR8 FEBRUARY 2020  
www.ti.com.cn  
4 器件和文档支持  
4.1 接收文档更新通知  
要接收文档更新通知,请导航至 ti.com. 上的器件产品文件夹。单击右上角的通知我进行注册,即可每周接收产品  
信息更改摘要。有关更改的详细信息,请查看任何已修订文档中包含的修订历史记录。  
4.2 支持资源  
TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight  
from the experts. Search existing answers or ask your own question to get the quick design help you need.  
Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do  
not necessarily reflect TI's views; see TI's Terms of Use.  
4.3 商标  
E2E is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
4.4 静电放电警告  
ESD 可能会损坏该集成电路。德州仪器 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理措施和安装程序 , 可  
能会损坏集成电路。  
ESD 的损坏小至导致微小的性能降级 , 大至整个器件故障。 精密的集成电路可能更容易受到损坏 , 这是因为非常细微的参数更改都可  
能会导致器件与其发布的规格不相符。  
4.5 Glossary  
SLYZ022 TI Glossary.  
This glossary lists and explains terms, acronyms, and definitions.  
5 机械、封装和可订购信息  
以下页面包含机械、封装和可订购信息。这些信息是指定器件的最新可用数据。数据如有变更,恕不另行通知,且  
不会对此文档进行修订。如需获取此数据表的浏览器版本,请查阅左侧的导航栏。  
2
版权 © 2020, Texas Instruments Incorporated  
PACKAGE OPTION ADDENDUM  
www.ti.com  
31-May-2023  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead finish/  
Ball material  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
(6)  
AFE44I30YZR  
AFE44I30YZT  
AFE44I31YZR  
ACTIVE  
ACTIVE  
NRND  
DSBGA  
DSBGA  
DSBGA  
YZ  
YZ  
YZ  
30  
30  
30  
3000 RoHS & Green  
250 RoHS & Green  
3000 RoHS & Green  
SAC396  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
-40 to 85  
-40 to 85  
-40 to 85  
AFE44I30  
Samples  
Samples  
SAC396  
SAC396  
AFE44I30  
AFE44I31  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance  
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may  
reference these types of products as "Pb-Free".  
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.  
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based  
flame retardants must also meet the <=1000ppm threshold requirement.  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
(6)  
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two  
lines if the finish value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
31-May-2023  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 2  
重要声明和免责声明  
TI“按原样提供技术和可靠性数据(包括数据表)、设计资源(包括参考设计)、应用或其他设计建议、网络工具、安全信息和其他资源,  
不保证没有瑕疵且不做出任何明示或暗示的担保,包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担  
保。  
这些资源可供使用 TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任:(1) 针对您的应用选择合适的 TI 产品,(2) 设计、验  
证并测试您的应用,(3) 确保您的应用满足相应标准以及任何其他功能安全、信息安全、监管或其他要求。  
这些资源如有变更,恕不另行通知。TI 授权您仅可将这些资源用于研发本资源所述的 TI 产品的应用。严禁对这些资源进行其他复制或展示。  
您无权使用任何其他 TI 知识产权或任何第三方知识产权。您应全额赔偿因在这些资源的使用中对 TI 及其代表造成的任何索赔、损害、成  
本、损失和债务,TI 对此概不负责。  
TI 提供的产品受 TI 的销售条款ti.com 上其他适用条款/TI 产品随附的其他适用条款的约束。TI 提供这些资源并不会扩展或以其他方式更改  
TI 针对 TI 产品发布的适用的担保或担保免责声明。  
TI 反对并拒绝您可能提出的任何其他或不同的条款。IMPORTANT NOTICE  
邮寄地址:Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2023,德州仪器 (TI) 公司  

相关型号:

SI9130DB

5- and 3.3-V Step-Down Synchronous Converters

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1-E3

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135_11

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9136_11

Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130CG-T1-E3

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130LG-T1-E3

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130_11

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137DB

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137LG

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9122E

500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY