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STMicroelectronics STKNX-AC | Demoboard EVALKITSTKNX
Miniature KNX transceiver with voltage regulators
Overview
| Topology | Other Topology |
| IC revision | 131 |
Description
The STKNX is a transceiver device for KNX TP communication. The small package and few external components enable the very compact KNX nodes design.The simple interface to the μC allows easy replacement of physical layer discrete components implementations.The STKNX device features two integrated voltage regulators for external use in the application: the selectable 3.3 V / 5 V - 20 mA linear regulator and the adjustable 1 V to 12 V - 150 mA high-efficiency DC/DC step down switching converter.The integrated KNX bus power extractor supports bus current up to 30 mA to power external devices and the STKNX transceiver's own power needs, while limiting the bus current slew rate according to KNX specifications.The STKNX assures the safe coupling to the bus and provides the bus monitoring warning for the loss of bus power.
Features
◾Very thin fine pitch 4 x 4 mm VQFNPN24 package◾KNX certified, KNX TP1-256 supported◾Easy interface to μC◾Very small system solution◾Two integrated voltage regulators for external use in application ◾Selectable 3.3 V / 5 V - 20 mA linear regulator◾Adjustable 1 V to 12 V - 150 mA high- efficiency DC/DC step down switching converter
◾KNX bus power extractor supporting bus current up to 30 mA◾Adjustable KNX bus current slew rate dI/dt◾No crystal required◾Operating temperature range -40 °C to +85 °C
Typical applications
- KNX twisted pair network (KNX TP1-256)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | IR(mA) | RDC(Ω) | L(µH) | ISAT(A) | fres(MHz) | Interface Type | Variant | Gender | Pins | Mount | Working Voltage(V (AC)) | Packaging | L(mm) | H(mm) | Operating Temperature | Color | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | MountSMT | – | PackagingTape and Reel | Length2 mm | Height0.7 mm | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | – | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 590 nm, Yellow | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]590 nm | Emitting ColorYellow | Peak Wavelength [typ.]595 nm | Luminous Intensity [typ.]120 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | MountSMT | – | PackagingTape and Reel | Length2 mm | Height0.7 mm | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | – | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]150 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | MountSMT | – | PackagingTape and Reel | Length2 mm | Height0.7 mm | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | Rated Current800 mA | – | – | – | – | – | – | – | – | MountSMT | – | – | Length1.6 mm | Height0.8 mm | Operating Temperature -55 °C up to +125 °C | – | Impedance @ 100 MHz600 Ω | Maximum Impedance800 Ω | Maximum Impedance200 MHz | Rated Current 21000 mA | DC Resistance0.2 Ω | TypeHigh Current | ||||
 | WE-CBA SMT EMI Suppression Ferrite Bead, –, – | Downloads10 files RF & Microwave simulation models Download all 10 files as zip archive | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBA SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | Rated Current400 mA | DC Resistance0.25 Ω | – | – | – | – | – | – | – | MountSMT | – | – | Length1.6 mm | Height0.8 mm | Operating Temperature -55 °C up to +125 °C | – | Impedance @ 100 MHz330 Ω | Maximum Impedance690 Ω | Maximum Impedance280 MHz | – | – | TypeHigh Speed | |||
 | WE-LQS SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | – | – | – | – | – | – | – | Rated Current650 mA | DC Resistance0.46 Ω | Inductance33 µH | Saturation Current0.9 A | Self Resonant Frequency16 MHz | – | – | – | – | MountSMT | – | – | Length4 mm | Height1.8 mm | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | ||||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderJumper | Pins1 | – | Working Voltage250 V (AC) | PackagingBag | Length2.44 mm | – | Operating Temperature -40 °C up to +125 °C | ColorBlue | – | – | – | – | – | – | |||
 | WR-PHD Socket Header - Single, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderSocket Header | Pins6 | MountTHT | Working Voltage250 V (AC) | PackagingTray | Length15.74 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | ||
 | WR-PHD Socket Header - Single, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderSocket Header | Pins10 | MountTHT | Working Voltage250 V (AC) | PackagingTray | Length25.9 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | ||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderJumper | Pins1 | – | Working Voltage250 V (AC) | PackagingBag | Length2.44 mm | – | Operating Temperature -40 °C up to +125 °C | ColorBlack | – | – | – | – | – | – | |||
| WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderJumper | Pins1 | – | Working Voltage250 V (AC) | PackagingBag | Length2.44 mm | – | Operating Temperature -40 °C up to +125 °C | ColorRed | – | – | – | – | – | – | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderPin Header | Pins2 | MountTHT | Working Voltage250 V (AC) | PackagingBag | Length5.08 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderPin Header | Pins3 | MountTHT | Working Voltage250 V (AC) | PackagingBag | Length7.62 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | |||
 | WR-PHD Pin Header - Dual, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderPin Header | Pins4 | MountTHT | Working Voltage250 V (AC) | PackagingBag | Length5.08 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | |||
 | WR-PHD Pin Header - Dual, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderPin Header | Pins6 | MountTHT | Working Voltage250 V (AC) | PackagingBag | Length7.62 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | |||
 | WR-PHD Socket Header - Single, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderSocket Header | Pins8 | MountTHT | Working Voltage250 V (AC) | PackagingTray | Length20.82 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | ||
 | WR-PHD Pin Header - Dual, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | Rated Current3000 mA | – | – | – | – | – | – | GenderPin Header | Pins20 | MountTHT | Working Voltage250 V (AC) | PackagingBag | Length25.4 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeStraight | |||
 | WR-USB Mini/Micro Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Mini/Micro Connectors | – | – | – | – | – | – | – | Rated Current1000 mA | – | – | – | – | Interface TypeType B | Variantwith Pads & Pegs | GenderReceptacle | Pins5 | MountSMT | Working Voltage30 V (AC) | PackagingTape and Reel & Mylar | – | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | TypeHorizontal |