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FDC2114 Datasheet(PDF) 1 Page - Texas Instruments |
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FDC2114 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 61 page  IN0A IN0B IN3A IN3B FDC2114 / FDC2214 VDD GND SCL SDA Int. Osc. ADDR INTB SD GND MCU VDD 3.3 V 3.3 V GPIO GPIO 0.1 F 1 F Core I 2C I 2C peripheral 3.3 V L Cap Sensor 0 CLKIN 40 MHz C L Cap Sensor 3 C Resonant circuit driver Resonant circuit driver Product Folder Sample & Buy Technical Documents Tools & Software Support & Community FDC2212, FDC2214, FDC2112, FDC2114 SNOSCZ5A – JUNE 2015 – REVISED JUNE 2015 FDC2x1x EMI-Resistant 28-Bit,12-Bit Capacitance-to-Digital Converter for Proximity and Level Sensing Applications 1 Features 3 Description Capacitive sensing is a low-power, low-cost, high- 1 • EMI-Resistant Architecture resolution contactless sensing technique that can be • Maximum Output Rates (one active channel): applied to a variety of applications ranging from – 13.3 ksps (FDC2112, FDC2114) proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive – 4.08 ksps (FDC2212, FDC2214) sensing system is any metal or conductor, allowing • Maximum Input Capacitance: 250 nF (at 10 kHz for low cost and highly flexible system design. with 1 mH inductor) The main challenge limiting sensitivity in capacitive • Sensor Excitation Frequency: 10 kHz to 10 MHz sensing applications is noise susceptibility of the • Number of channels: 2, 4 sensors. With the FDC2x1x innovative EMI resistant • Resolution: up to 28 bits architecture, performance can be maintained even in presence of high-noise environments. • System Noise Floor: 0.3 fF at 100 sps • Supply Voltage: 2.7 V to 3.6 V The FDC2x1x is a multi-channel family of noise- and EMI-resistant, high-resolution, high-speed • Power Consumption: Active: 2.1 mA capacitance-to-digital converters for implementing • Low-Power Sleep Mode: 35 uA capacitive sensing solutions. The devices employ an • Shutdown: 200 nA innovative narrow-band based architecture to offer high rejection of noise and interferers while providing • Interface: I2C high resolution at high speed. The devices support a • Temperature range: -40°C to +125°C wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially 2 Applications useful for reliable sensing of conductive liquids such as detergent, soap, and ink. • Proximity Sensor • Gesture Recognition Device Information(1) • Level Sensor for Liquids, including Conductive PART NUMBER PACKAGE BODY SIZE (NOM) ones such as Detergent, Soap, and Ink FDC2112, FDC2212 WSON (DNT 12) 4.00 mm x 4.00 mm • Collision Avoidance FDC2114, FDC2214 WQFN (RGH 16) 4.00 mm x 4.00 mm • Rain, Fog, Ice, Snow Sensor (1) For all available packages, see the orderable addendum at • Automotive Door and Kick Sensors the end of the datasheet. • Material Size Detection Simplified Schematic 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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