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SX9500

Semtech
Part Number SX9500
Manufacturer Semtech
Description Four Channels Capacitive Proximity / Button Solution
Published Oct 23, 2012
Detailed Description WIRELESS & SENSING SX9500 Ultra Low Power, Four Channels Capacitive Proximity/Button Solution GENERAL DESCRIPTION The ...
Datasheet PDF File SX9500 PDF File

SX9500
SX9500

Overview
WIRELESS & SENSING SX9500 Ultra Low Power, Four Channels Capacitive Proximity/Button Solution GENERAL DESCRIPTION The SX9500 is a low-cost, very low power 4-channel capacitive controller that can operate either as a proximity or button sensor.
The SX9500 includes sophisticated on-chip auto-calibration circuitry to regularly perform sensitivity adjustments, maintaining peak performance over a wide variation of temperature, humidity and noise environments, providing simplified product development and enhanced performance.
The SX9500 operates directly from an input supply voltage of 2.
7 to 5.
5V, and includes a separate I2C serial bus supply input to enable communication with 1.
8 – 5.
5V hosts.
The I2C serial communication bus reports proximity or touch detection and is used to facilitate parameter settings adjustment.
Upon a proximity detection, the NIRQ output asserts, enabling the user to either determine the relative proximity distance, or simply obtain an indication of detection.
A dedicated transmit enable (TXEN) pin is available to synchronize capacitive measurements for applications that require synchronous detection, enabling very low supply current and high noise immunity by only measuring proximity when requested.
KEY PRODUCT FEATURES 2.
7 – 5.
5V Input Supply Voltage Capacitive Sensor Inputs Down to 0.
08 fF Capacitance Resolution Stable Proximity & Touch Sensing With Temperature Capacitance Offset Compensation to 30pF Active Sensor Guarding Automatic Calibration Ultra Low Power Consumption: Active Mode: Doze Mode: Sleep Mode: 170 uA 18 uA 2.
5 uA 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 APPLICATIONS • Notebooks • Tablets • Mobile Appliances ORDERING INFORMATION Part Number SX9500IULTRT 1...


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