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AFE4300PNR

更新时间： 2024-11-07 12:34:59
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德州仪器 - TI /
页数 文件大小 规格书
30页 309K
描述
Low-Cost, Integrated Analog Front-End for Weight-Scale and Body Composition Measurement

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AFE4300PNR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：LFQFP, QFP80,.55SQ,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：0.67模拟输入最大值：3.4 V
输入类型：DIFFERENTIALJESD-30 代码：S-PQFP-G80
JESD-609代码：e4长度：12 mm
湿度敏感等级：3信道数量：2
功能数量：1端子数量：80
最高工作温度：70 °C最低工作温度：
输出：VOLTAGE输出代码：BINARY/TWOS COMP
封装主体材料：PLASTIC/EPOXY封装代码：LFQFP
封装等效代码：QFP80,.55SQ,20封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3 V认证状态：Not Qualified
分辨率：16 µm座面最大高度：1.6 mm
子类别：Codecs最大压摆率：0.00097 mA
标称供电电压：3.3 V表面贴装：YES
电信集成电路类型：TELECOM CIRCUIT温度等级：COMMERCIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：12 mm
Base Number Matches：1

AFE4300PNR 数据手册

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AFE4300  
www.ti.com  
SBAS586B –JUNE 2012–REVISED JUNE 2013  
Low-Cost, Integrated Analog Front-End  
for Weight-Scale and Body Composition Measurement  
Check for Samples: AFE4300  
1
FEATURES  
DESCRIPTION  
The AFE4300 is  
a
low-cost analog front-end  
2
•
Weight-Scale Front-End:  
incorporating two separate signal chains: one chain  
for weight-scale (WS) measurement and the other for  
body composition measurement (BCM) analysis. A  
16-bit, 860-SPS analog-to-digital converter (ADC) is  
multiplexed between both chains. The weight  
measurement chain includes an instrumentation  
amplifier (INA) with the gain set by an external  
resistor, followed by a 6-bit digital-to-analog converter  
(DAC) for offset correction, and a circuit to drive the  
external bridge/load cell with a fixed 1.7 V for  
ratiometric measurements.  
–
–
Supports up to Four Load Cell Inputs  
On-Chip Load Cell 1.7-V Excitation Voltage  
for Ratiometric Measurement  
–
68-nVrms Input-Referred Noise (0.1 Hz to 2  
Hz)  
–
–
Best-Fit Linearity: 0.01% of Full-Scale  
Weight-Scale Measurement : 540 µA  
•
Body Composition Front-End:  
–
Supports Up To Three Tetra-Polar Complex  
Impedance Measurements  
The AFE4300 can also measure body composition by  
applying a sinusoidal current into the body. The  
sinusoidal current is generated with an internal  
pattern generator and a 6-bit, 1-MSPS DAC. A  
voltage-to-current converter applies this sinusoidal  
current into the body, between two terminals. The  
voltage created across these two terminals as a  
result of the impedance of the body is measured back  
with a differential amplifier, rectified, and its amplitude  
is extracted and measured by the 16-bit ADC.  
–
6-Bit, 1-MSPS Sine-Wave Generation  
Digital-to-Analog Converter (DAC)  
–
–
–
–
375-µArms, ±20% Excitation Source  
Dynamic Range : 0 Ω to 2.8 kΩ  
0.1-Ω Measurement RMS Noise in 2-Hz BW  
Body Composition measurement : 970 µA  
•
Analog-to_Digital Converter (ADC):  
–
–
16 Bits, 860 SPS  
The AFE4300 operates from 2 V to 3.6 V, is specified  
from 0°C to +70°C, and is available in a TQFP-80  
package.  
Supply current: 110 µA  
APPLICATIONS  
•
Weight Scales with Body Composition  
Measurements  
FUNCTIONAL BLOCK DIAGRAM  
RG  
CLK  
OUTx_FILT  
AVDD  
VLDO  
MUX  
INPx  
INMx  
ó 4  
A1  
A2  
+
offset  
STE  
VSENSEPx  
VSENSEMx  
SDIN  
SDOUT  
SCLK  
RDY  
Patient  
&
ESD  
ADC  
(16bit, 860SPS)  
MUX  
Full Wave  
Rectifier  
A3  
SPI  
MUX  
Protection  
IOUTPx  
I/Q  
Demodulator  
Patient  
&
Zs  
ESD  
Protection  
MUX  
IOUTMx  
0.9V  
VDAC_FILT_IN  
1.5k +/- 20%  
CLK  
DAC  
(6bit)  
DDS  
(10bits)  
Reference  
LDO  
VDACOUT  
AVSS  
AUXx  
VREF VLDO  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
SPI is a trademark of Motorola Inc..  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2012–2013, Texas Instruments Incorporated  
 
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AFE4300PNR 替代型号

型号 品牌 替代类型 描述 数据表
AFE4300PN TI

完全替代

 Low-Cost, Integrated Analog Front-End for Weight-Scale and Body Composition Measurement

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