About Nan Price

Nan Price is an Associate Editor at Circuit Cellar. You can reach her at nprice@circuitcellar.com and @assoceditor_cc.

16-Bit Digitizer

SpectrumThe M2i.4960 and the M2i.4961 mid-speed 16-bit digitizers are available for PCI/PCI-X and PCIe. The devices offer two or four synchronous channels with a 60 megasamples-per-second (MSPS) speed and a 30-MHz bandwidth.

The channels can be individually switched between single-ended and true differential input mode, therefore single-ended and differential signals can be simultaneously acquired with one digitizer. Each input channel includes an on-board calibration. The channels can be software programmed for proper termination, user offset, and input range.

The devices’ acquisition modes include segmented acquisition, gated acquisition, or streaming mode. The devices also feature a versatile clock and trigger section, making them suitable for a variety of different applications. Multiple cards can be internally synchronized to obtain more synchronous channels or to directly synchronize to arbitrary and digital waveform generators or digital waveform capture cards.

A digital input option enables up to 32 synchronous digital input channels to be acquired by multiplexing them into the analog data in different ways. Each of the 16 digital inputs can completely replace one analog channel or each of the 2/4 digital inputs can be stored together with the A/D sample by reducing its resolution.

Contact Spectrum for pricing.

Spectrum GmbH
www.spectrum-instrumentation.com

Ultra-Compact Ultrasonic Sensor Series

MaxbotixThe UCXL-MaxSonar-WR series of sensors are flexible, OEM-customizable products that can be integrated into a system with MaxBotix’s horns or flush-mounted into an existing housing. Mounting design recommendations are provided through MaxBotix’s 3-D CAD models (available in multiple formats) to facilitate your design process. The sensor layout offers four conveniently placed mounting holes for design flexibility.

The rugged, high performance sensors are individually calibrated and feature a 1-cm resolution, an operational temperature range from –40˚C to 70˚C, real-time automatic calibration (voltage, humidity, and ambient noise), 200,000+ h mean time between failures (MTBF), and an operational 3-to-5.5-V voltage range with a low 3.4-mA average current requirement.

Contact MaxBotix for pricing.

MaxBotix, Inc.
www.maxbotix.com

Low-Power Remote-Control Transceivers

LinxThe TT Series remote-control transceiver is designed for bidirectional, long-range, remote-control applications. The module includes an optimized frequency-hopping spread spectrum (FHSS) RF transceiver and an integrated remote-control transcoder.

The FHSS is capable of reaching more than 2 miles in typical line-of-sight environments with 0-dB gain antennas. An amplified version increases the output power from 12.5 to 23.5 dBm, boosting the range to more than 8 miles in line-of-sight environments with 0-dB antennas.

The TT Series transceiver features best-in-class receive sensitivity (up to −111 dBm) and low power consumption (only 19.2 mA in receive mode and 36 mA in transmit mode at 12.5 dBm). The initial version operates in the 902-to-928-Hz frequency band for North and South America.

The transceiver is housed in a compact reflow-compatible surface-mount technology (SMT) package. It doesn’t require any external RF components except an antenna, which simplifies integration and reduces assembly costs.

Programming is not required for basic operation. The transceiver’s primary settings are hardware-selectable, which eliminates the need for an external microcontroller or other digital interface. Eight status lines can be set up in any combination of inputs and outputs to transfer button or contact states. A selectable acknowledgement indicates that the transmission was successfully received. For advanced features, a UART interface provides optional software configuration.

A simple pairing operation configures two modules to operate together. A single button press on each side causes the modules to automatically swap their 32-bit addresses and store them in nonvolatile memory. It can be configured to automatically send an acknowledgement to the transmitting unit either after receiving a command or with external circuitry when an action has taken place. An optional external processor can send two data bytes with the acknowledgement.

The TT Series transceiver module is available as part of Linx Technologies’s master development system that comes with two development boards for benchmarking and prototyping. Each board is populated with a transceiver, two remote-control development boards, and programming boards. The system also includes antennas, a daughterboard with a USB interface, demonstration software, extra modules, and connectors.

Contact Linx Technologies for pricing.

Linx Technologies
www.linxtechnologies.com

“No Opto” Synchronous Forward Controller

LinearThe LT3752/LT3752-1 is a high-input voltage-capable synchronous forward controller with an active clamp transformer reset. A controlled VOUT start-up and shut-down is maintained with an integrated housekeeping controller to bias the primary and secondary ICs. The internal bias generation also reduces the main power transformer’s complexity and size by avoiding the need for extra windings to create bias supplies.

The LT3752 operates over a 6.5-to-100-V input voltage range. The LT3752-1 is well suited for hybrid vehicle (HV) and hybrid electric vehicle (HEV) applications. For up to 400-V inputs and greater, it enables RC start-up from the input voltage with the maximum voltage limited only by the choice of external components.

A ±5% output voltage regulation can be attained without using an optocoupler. An optocoupler can be used to obtain ±1.5% output voltage regulation. The LT3752/-1 uses a pulse transformer to send a control signal to a secondary-side MOSFET driver for the synchronous rectification timing. It can also be used in self-driven applications the power transformer pulses control the secondary-side MOSFETs. With the LT3752/-1, secondary-side ICs no longer require start-up circuitry to operate when the output voltage is 0 V, which enables a controlled VOUT start-up.

The LT3752/-1 has a programmable 100-to-500-kHz operating switching frequency. It can be synchronized to an external clock, so a range of output inductor values and transformer sizes can be used.

The LT3752/-1 is available in a TSSOP-38 package with several pins removed for high-voltage spacing. The LT3752/-1 E- and I-grade versions function from a –40°C-to-125°C junction temperature. The LT3752/-1 H-grade functions from a –40°C-to-150°C operating junction temperature. The LT3752/-1 MP-grade functions from –55°C-to-150°C operating junction temperature.

The LT3752/LT3752-1 costs $3.39 in 1,000-piece quantities.

Linear Technology Corp.
www.linear.com

COM Express Module With 2nd-Generation Intel Core

DynatemThe CPU-162-14 is a high-performance COM Express module based on the Intel Core i7 Processor. The COM is designed to work in harsh environments. It includes features to provide extra resilience to vibrations, making it well suited for transportation applications.

The CPU-162-14 includes extended temperature versions for –40°-to-85° operation; direct-mounted RAM and a CPU to withstand stress and vibration; up to 8 GB double data rate type three synchronous dynamic RAM (DDR3 SDRAM); and three video ports including video graphics array (VGA), Intel’s Serial Digital Video Out (SDVO), and low-voltage differential signaling (LVDS).

Contact Dynatem for pricing.

Dynatem, Inc.
www.dynatem.com