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12 Dec 2012

LTC6090

The LTC6090 is a high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6090 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies.

The LTC6090 is internally protected against overtemperature conditions. A thermal warning output, TFLAG, goes active when the die temperature approaches 150°C. The output stage can be turned off with the output disable pin OD. By tying the OD pin to the thermal warning output, the part will disable the output stage when it is out of the safe operating area. These pins easily interface to any logic family.

The LTC6090 is available in an 8-lead SO and 16-lead TSSOP with exposed pad for low thermal resistance.

LTC6090 – 140V CMOS Rail-to-Rail Output, Picoamp Input Current Op Amp - [Link]

23 Nov 2012

Integrated Wireless Power Li-Ion Charger Receiver, Qi (WPC) Compliant 

Texas Instruments has launched a pair of ICs designed to simplify wireless power solutions for mobile devices, consisting of a single-chip wireless power receiver with integrated battery charger and a ‘free-position’ transmitter that enlarges the charging area by a factor of four.

The bq51050B is the industry’s wireless power receiver compatible with the Wireless Power Consortium (WPC) 1.1 Qi standard. It features an integrated direct battery charger and enables faster, more efficient charging of portable devices. The unique 20-V receiver combines rectification, voltage conditioning, communication control and Li-ion charging capability in a single chip. The inductor-free, single-stage design yields high efficiency and saves up to 60% board space compared to a multi-stage implementation. [via]

Wireless Power Duo Keeps Portable Devices Humming - [Link]

23 Nov 2012

The MAX6070/MAX6071 offer a very low noise and low-drift voltage reference in a small 6-pin SOT23 package. These devices provide a 1/f noise voltage of only 4.8µVP-P at an output voltage of 2.5V, with a temperature drift of 6ppm/°C (max). The devices operate with an input voltage from 2.8V to 5.5V. The MAX6070/MAX6071 consume 150µA of supply current and can sink and source up to 10mA of load current. The MAX6070/MAX6071 provide an initial accuracy of 0.04%. The low-drift and low-noise specifications enable enhanced system accuracy, making these devices ideal for high precision industrial applications. The MAX6070 offers a noise filter option for wideband applications.

MAX6070 MAX6071 – Low-Noise, High-Precision Series Voltage References - [Link]

23 Nov 2012

SKL14 can be used in switch-mode power supplies or as protection diodes and thanks their really miniature dimensions, they are also suitable at the lack of PCB space. 

SMT Technologies enable a substantial increase of current density thanks to a very good heat transfer from a component to a PCB. Almost a zero length of „leads“ of SMT components also features another positive aspects like a significant suppression of a parasitic inductancy and a possibility to construct circuits with a high components density and a minimal PCB tracks length, what significantly decreases an undesired radiation (EMI) for example in switch-mode power supplies.

A very small forward voltage drop <0.55V/1A and the speed of Schottky diodes make the SKL14 a universal diode suitable for example for rectifying, for SMPS or as a reverse polarity protection diode. A relatively high current is mainly enabled by a Power SOD-123 package with enhanced thermal properties.

Detailed information will provide you the SKL14 datasheet and in the Diotec SMT diodes overview. In case of interest, please contact us at info@soselectronic.com.

SKL14 – 1A Schottky diode will fit everywhere - [Link]


16 Nov 2012

New family of conectors picoMAX from company Wago is substantially lower than traditional connectors and it is extremely resistant to vibrations.

picoMAX is a vast system of connectors with spring contacts for „wire-to-board“, „wire-to-wire“, „board-to-wire“ but also „panel-feed-through“ connections with very compact dimensions and universal usage, with pinov 3.5mm, 5.0mm and 7.5mm pitch. The biggest construction novelty of the picoMAX series is a new substantially changed design in comparison to a traditional design. New design of a pin+socket contact bridge enabled a significant decreasing of the connector´s height and at the same time a perfect mechanical connection of both parts to each other. It means a significant improvement of resistance to vibrations (up to 20g) in comparison to common connectors. A sturdy connection is further supported by integrated locking latches which avoid disengagement caused by vibrations

A new construction resulted in a very short path for an electric signal, what means a lower contact resistance (contact bridge and pins are from a tin-plated electrolytic copper) and a higher reliability. An absolute reliability of the contact is ensured even at high temperatures, thanks to an innovative clamp technology and an insulation material based on glass fiber reinforced PPA (polyphtalamide). As we might expect at Wago mark – connecting of wire conductors is simple, without specialty tools (only a usual screwdriver is necessary to release a wire) and in praxis there´s no limitation regarding the type or termination of a wire conductor (solid, stranded, fine-stranded, with ferrules, …).

A big plus of the picoMAX series is a diversity. With the picoMAX series we can be sure, that in this family we´ll find mutually compatible types for all connections. Simple and at the same time sophisticated system of coding enables to ensure a correct installation, for example in applications with several connections on one place. Despite of a vast amount of combinations of various connectors, the picoMAX system features a simple and an intuitive application.

picoMAX is also available in the „picoMAX eCOM“ version – a PCB terminal block, which can also be used as a removable connection (plug-in). It is even more compact and economical version with pins without a plastic housing, suitable for applications in which you don´t need all advantages of the picoMAX system.

A complete description of the whole series would require many pages of text. A better and quicker idea will provide to you the attached video, picoMAX flyer and picoMAX catalogue. 3,5mm pitch version (2091-xx) is for wire conductors 0,2-1,5 mm2/10A, 5.0mm pitch version (2092-xx) is for wire conductors 0,2-2,5 mm2/16A/250-630V. 7,5mm pitch version (2092-xx) has similar properties as the previous one, but it has a higher nominal voltage (400-1000V).

picoMAX connectors are usable literally everywhere – in a huge amount of versions will be very probably found the right ones for your application.

Small “big” connectors – Wago picoMAX - [Link]

14 Nov 2012

0.01A, 10mV but even 2A are no problem for the AxW-K series Fujitsu relay. That´s why they´re a reliable component for a linear-undistorted transfer of diverse signals.

AxW-K relay series are well-proven 2-pole relays (DPDT) reliable switching even very small signals, already from 0,01mA/10mV DC, but they won´t be scared of 1A/30VDC (0,5A/125VAC). Reliable switching is ensured by bifurcated silver-based contacts plated by gold. As, circuits for signal processing usually consist of SMD components, neither a relay intended for such applications shoudn´t be too high. With the height of only 5 mm, AxW-K relay series meet this requirement very well and a standard DIL pitch makes their usage and PCB design easier at the same time.

In the AxW-K series can be found several types – with 1.5V – 48V coils, and also bistable (latching) types (with 1 or 2 coils). Types A3W,A5W,AL-D5W-K,A12W and A24W are kept in stock, other types we´re able to provide you upon order. Further features of the AxW-K series relays result from their construction as a classic electromagnetic relay – high isolation, galvanic isolation from a control circuit, ability to transfer small signals without distortion, resistance to various surges and other. Besides telecommunication circuits, AxW-K series relays are ideal for switching of signals from a wide range of industrial detectors and sensors, audio devices and other.

Detailed information will provide you the Fujitsu AxW-K datasheet. In case of interest in any Fujitsu relay, please contact us at info@soselectronic.com

Small signal relay AxW-K won’t refuse any signal - [Link]

28 Oct 2012

The highest power density in a compact SIP package – it is the biggest contribution of TRACOPOWER TMR 6 series isolation DC/DC modules.

6 Watts is already a considerable power. However, thanks to modern technologies in a construction of switch-mode power supplies, neither such a powerful source doesn´t require to reserve a lot of space on a PCB – 2 cm2 are fully sufficient for TRACO TMR 6 na to úplne postačujú 2 cm2. In other words – from this little area a user gains an insulated regulated power supply of for example 5V/1,2A without a need for an additional cooling or other restrictions.

32 types in four voltage ranges (4,5 to 75V) provide eight fully regulated output voltages (3.3, 5.0, 9.0, 12, 15, ±5.0, ±12 and ±15 VDC). For a given application it is only necessary to choose an appropriate type for a required input / output voltage and TMR6 will ensure a reliable regulation even at high changes of input voltage (max. 0,2% output drift at VINMIN to VINMAX). As we are already used to at the Traco Power mark, DC/DC modules are constructed for a continuous operation in industrial environment. They are able to operate in a range of temperatures of -40 to +65°C (without power derating)and they resist to an indefinite short circuit. TMR 6 can be controlled remotely, what decreases its power consumption in a no-load condition and enables a remote switching on/ off of target devices at the same time.

Detailed information will provide you the TMR 6 datasheet.

Guide price is approx. 15 Eur/pce (depending on quantity), MOQ starts already from 1 piece.

6 Watts compressed into a SIP package – TRACO TMR 6 - [Link]

22 Oct 2012

Miniature PCB connectors from company Phoenix Contact bring a surprisingly simple manipulation and they occupy only a minimum of space.

Small dimensions, reliable contact, simple usage and up to 6A current are main properties of new Phoenix Contact connectors PTSM, PTPM and PTQ series from the Combicon HD family. Especially at high-volume production batches it is very important to reach a fast and precise cables assembly – and if possible – resistant to mistakes arising from lower attention of workers. New connectors meet these requirements very well and for example th PTQ series requires only to push in an insulated wire and close the lever (upper portion of the connector).

Four new series, which can be found in our portfolio are:

PTPM – (PTPM-x/x-P-2,5) a miniature, only 5mm high wire-to-board connector, consisting of 2 parts (socket + header). PTPM connects wires without stripping an insulation (IDC). It is ideal for Ethernet cables and other wires of 0.14/0.34 mm2 (AWG 22-26) diameter – depending on a type. Maximum current 2-4A/160V, 2.5 mm pitch. Number of poles is always even (2-4-6-8-10).

PTSM – a connector similar to PTPM series, but the cable termination is screwless (push-in) via a spring contact. That enables to use up to 0,75 mm2 conductors – solid but also stranded wires.

PTSM – (PTSM -x/x-2,5-H, resp PTSM-x/x-2,5-V) terminals for a direct connection of wire conductors to a PCB (THT and SMT version).

PTQ – IDC wire-to-board connector for extremely simple connection of wires to a PCB. All that is necessary is to push in an Ethernet cable or other 0.14/0.34 mm2 cable and to close the lever (upper portion of the connector – without stripping an insulation, without cutting and without any tools. No tools are necessary even to release the wire – only open the actuation lever. Maximum current up to 4A/160V, 2.5 mm pitch, 8mm height.

Plug-in connectors of PTPM and PTSM series use the same headers (PTSM-x/x-HH-2,5, resp PTSM-x/x-HV-2,5), what further increases their variability. Headers are available in THT as well as SMT versions (horizontal and also vertical). These new miniature connectors are universally usable for power supply, data and analog signals, connection of LED panels and other. All 4 series are being supplied in tapes (TR) enabling a machine insertion to a PCB.

Detailed description will provide you the overview of Phoenix PTSM and PTPM and Phoenix PTQ series, as well as datasheets at particular types. Many versions can be found directly in our stock, in case of interest in non-stock types, please contact us at info@soselectronic.com.

Don’t you want to solder leads to PCBs anymore? Mini PCB connectors will solve it - [Link]

22 Oct 2012

The MAX31855 performs cold-junction compensation and digitizes the signal from a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The data is output in a signed 14-bit, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples. For full range accuracies and other thermocouple types, see the Thermal Characteristics specifications in the full data sheet.

MAX31855 – Cold-Junction Compensated Thermocouple-to-Digital Converter - [Link]

17 Oct 2012

If we want to obtain a 5V voltage from only 2 NiMH batteries, we´ll face the fact, that the most of common DC/DC circuits doesn´t operate at such a low voltage. LT1304 controller belongs among circuits, which handle this situation without problems and it also provides several extra things.

To obtain 3.3 or 5V from a lower voltage is a typical requirement at battery-powered or portable devices. Naturally, to obtain 5V it is also possible to use 4-5 NiMH cells or 2 Li-Po cells, but then the device is uselessly bigger, heavier and more expensive. The solution is just the usage of a suitable step-up circuit. LT1304 from Linear Technology belongs to “MicroPower” DC/DC step-up circuits operating already from a very small voltage, 1.5V typically. 

Thanks to a very low power consumption (10uA/Shutdown) and a built-in independent low battery detector, it is optimized for usage with batteries. LT1304 needs for its operation only a few external components – 2 capacitors, 1 inductor and 1 diode is all that is necessary to create an operating DC/DC circuit.
LT1304 is available in 3 versions – LT1304VCS8-5, LT1304CS8-3,3 with fixed voltages and LT1304CS8 with adjustable output. Versions with fixed output voltages don´t need a divider in a feedback, what further simplifies a circuit.

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