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SX9300EVK

更新时间： 2024-01-07 21:11:36
品牌 Logo 应用领域
商升特 - SEMTECH /
页数 文件大小 规格书
34页 901K
描述
Ultra Low Power, Dual Channel Smart Proximity SAR Compliant Solution

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中文翻译

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SX9300EVK 数据手册

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SX9300  
Ultra Low Power, Dual Channel  
Smart Proximity SAR Compliant Solution  
WIRELESS & SENSING PRODUCTS  
Datasheet  
G
ENERAL  
D
ESCRIPTION  
KEY PRODUCT FEATURES  
´
´
2.7 – 5.5V Input Supply Voltage  
The SX9300 is the world’s first dual channel capacitive  
Specific Absorption Rate (SAR) controller that accurately  
discriminates between an inanimate object and human  
body proximity. The resulting detection is used in portable  
electronic devices to reduce and control radio-frequency  
(RF) emission power in the presence of a human body,  
Dual SAR Capacitive Sensor Inputs  
∑
On-Chip SAR Engine For Body versus Inanimate Object  
Detection  
∑
∑
∑
Stable Proximity Sensing With Temperature  
20mm detection distance  
Capacitance Offset Compensation to 30pF  
enabling  
significant  
performance  
advantages  
for  
manufacturers of electronic devices with EMF radiation  
sources to meet stringent emission regulations' criteria and  
Specific Absorption Rate (SAR) standards. Operating  
directly from an input supply voltage of 2.7 to 5.5V, the  
SX9300 outputs its data via a 1.65 – 5.5V host compatible  
I2C serial bus.  
´
´
´
Active Sensor Guarding  
Automatic Calibration  
Ultra Low Power Consumption:  
∑
∑
∑
Active Mode:  
Doze Mode:  
Sleep Mode:  
170 uA  
18 uA  
2.5 uA  
The I2C serial communication bus port is compatible with  
1.8V host control to report body detection/proximity and to  
facilitate parameter settings adjustment. Upon proximity  
detection, the NIRQ output asserts, enabling the user to  
either determine the relative proximity distance, or simply  
obtain an indication of detection. The serial bus can also  
serve to overwrite detection thresholds and operational  
settings in the event the user wants to change them from  
their factory presets.  
´
400KHz I2C Serial Interface  
∑
Four programmable I2C Sub-Addresses  
∑
Input Levels Compatible with 1.8V Host Processors  
´
´
Open Drain NIRQ Interrupt pin  
Three (3) Reset Sources: POR, NRST pin, Soft  
Reset  
´
´
´
-40°C to +85°C Operation  
Compact Size: 3 x 3mm Thin QFN package  
Pb & Halogen Free, RoHS/WEEE compliant  
The SX9300 includes an on-chip auto-calibration controller  
that regularly performs sensitivity adjustments to maintain  
peak performance over a wide variation of temperature,  
humidity and noise environments, providing simplified  
A
PPLICATIONS  
product development and enhanced performance.  
A
•
•
•
•
•
SAR Compliant Systems  
Notebooks  
Tablets  
Mobile Phones  
Mobile Hot Spots  
dedicated transmit enable (TXEN) pin is available to  
synchronize proximity measurements to RF transmission,  
enabling very low supply current and high noise immunity  
by only measuring proximity when requested.  
O
RDERING INFORMATION  
Semtech P/N  
Package Marking  
SX9300IULTRT Note1  
QFN-20  
ZM5C  
SX9300EVK  
Eval. Kit  
Note 1: Quantities are ordered in 3K units per Reel  
TYPICAL  
APPLICATION CIRCUIT  
Revision 1.8  
June 27, 2012  
© 2012 Semtech Corporation  
www.semtech.com  
1
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