Maxim Sensor Transmitter
Maxim has introduced the MAX12900, a low power 4–20mA sensor transmitter. Typical applications include industrial automation and process control, loop-powered 4–20mA current transmitters, remote instrumentation and smart sensors.
The MAX12900 increases system accuracy with 10ppm/℃ voltage reference for up to 3.5x lower drift compared to traditional transmitters. The small footprint (5mm x 5mm package size) of the MAX12900 includes 10 building blocks that provide space savings of 20 to 50 percent vs. 4–20mA sensor transmitter implementations. The addition of high voltage LDO and power sequencing capability also simplify the power up of the 4–20mA sensor transmitter.
Additional technical specifications are available on Maxim’s website.
Microsemi Power-Over-Ethernet Switch
Microsemi has announced the availability of its PDS-208G power-over-Ethernet (PoE) switch. Designed specifically for digital ceiling installations, the device is compatible with any IEEE 802.3af or 802.3at PoE lighting fixture and can be installed in ceiling or communication room racks.
The PDS-208G PoE switch offers Layer 2 management capabilities, and the device's eight 10/100/1,000 megabits per second (Mbps) ports with PoE capabilities are based on Microsemi's four-pair PoE technology, creating 50 percent power loss savings on the Ethernet cables. It also features two Gigabit ports which can be used for uplinks and can be remotely managed through Simple Network Management Protocol (SNMP) and the web.
Information concerning pricing and availability can be found on Microsemi’s website.
Pasternack Waveguide Gunn Diode Oscillators
Pasternack has unveiled a line of waveguide Gunn diode oscillators that are tunable and generate signal levels that exhibit low phase noise at popular K and Ka band frequencies. Due to the high external Q and temperature compensation mechanism, these oscillators exhibit increased frequency and power stability, lower phase noise and higher anti-load pulling characteristics.
There are two models in this series: The PEWGN1001 model is a K-Band waveguide Gunn oscillator module that generates a center frequency of 24.125 GHz with a tuning range of +/- 1.0 GHz. The PEWGN1000 model generates a Ka band center frequency of 35 GHz with a tuning range of +/- 3.0 GHz. Both models incorporate self-locking tuning screws.
For more information, visit Pasternack’s website.
Samsung Universal Flash Storage
Samsung has announced that it has begun mass production of 256-gigabyte (GB) embedded Universal Flash Storage (eUFS) based on automotive specifications from the JEDEC UFS 3.0 standard.
As thermal management is crucial for automotive memory applications, Samsung’s 256GB eUFS extends the temperature range to between -40°C and 105°C for both operational and power-saving modes. Warranties for conventional embedded multimedia card (eMMC) 5.1 products generally cover -25°C to 85°C for vehicles in operation and -40°C to 85°C when in idle or power-saving mode.
Sequential reads for the 256GB eUFS can reach 850 megabytes per second and random read operations come in at 45,000 IOPS. In addition, a data refresh feature speeds up processing and enables greater system reliability by relocating older data to other less-used cells.
For more information, visit Samsung’s website.
TI DC/DC Buck Regulators
Texas Instruments (TI) has launched two families of wide-VIN synchronous DC/DC buck regulators with electromagnetic interference (EMI) and thermal performance. The 5-A and 6-A LM73605/6 and 2.5-A and 3.5-A LM76002/3 step-down voltage converters feature an optimized pinout and thermal coefficient to streamline the process of achieving EMI compliance and reliability for industrial and automotive power supplies.
The 3.5-V to 36-V LM73605/6 and 3.5-V to 60-V LM76002/3 buck regulators exceed the CISPR 25 Class 5 automotive electromagnetic compatibility (EMC) requirements. These regulators’ programmable output switching frequency can be set either above the AM band, which eliminates AM-band interference and reduces output filter size and cost, or below the AM band to optimize efficiency.
For more information, visit TI’s website.
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