Electronics Weekly – Samsung Datacenter SSDs, Microsemi Atomic Clocks and More
Vincent Charbonneau posted on April 13, 2018 |

Maxim Low-power Microcontrollers

(Image courtesy of Maxim.)
(Image courtesy of Maxim.)

Maxim introduced the MAX32660 and MAX32652 microcontrollers (MCUs). These MCUs are based on the Arm Cortex M4 with a floating-point unit (FPU)processor and provide designers the means to develop applications under restrictive power constraints.The MAX32660 allows access to enough memory to run advanced algorithms and manage sensors (256KB flash and 96KB SRAM).

On the other hand, the MAX32652 has 3MB flash and 1MB SRAM integrated on-chip running up to 120MHz, and peripherals such as USB 2.0, secure digital (SD) card controller, a thin-film transistor (TFT) display and security engine.

For more information, visit Maxim’s website.

Microsemi Cesium Atomic Clocks

TimeCesium 4400 atomic clock. (Image courtesy of Microsemi.)
TimeCesium 4400 atomic clock. (Image courtesy of Microsemi.)

Microsemi announced that its portfolio of cesium clocks are compliant with the G.811.1 recommendation—known as enhanced Primary Reference Clocks (ePRC) — from the International Telecommunication Union (ITU) for timing characteristics of enhanced primary reference clocks. This standard impacts frequency accuracy by an order of magnitude from 1x10E-11 to 1x10E-12.

The company’s cesium frequency standards 5071A, TimeCesium 4400 and TimeCesium 4500 with ePRC compliance provide a high level of autonomous frequency accuracy for PRS deployment in telecom networks as required by international standards. Cesium clocks are used in GPS satellites, both in space and ground stations, and underpin the growing GPS market.

Additional technical specifications are available on Microsemi’s website.

Pasternack Quick Connect RF Loads

Quick Connect RF Loads. (Image courtesy of Pasternack.)
Quick Connect RF Loads. (Image courtesy of Pasternack.)

Pasternack launched a line of RF loads with 10 types of connectors for quick mating. Typical applications include distributed antenna systems(DAS), base stations, antennas and test instrumentation. The 24 connect terminations are available with QMA, QN, 4.3-10, SMP, SMP-M and BMA connectors for quick, snap-on or push-on mating. These RF loads support operating frequency ranges from DC to 40 GHz. They offer VSWR as low as 1.1:1 and input power up to 2W maximum. Some models are available with chains.

These quick connect RF loads ease installation and eliminate the need for wrench or torque for thread coupling. The QMA model is made of tri-metal-plated brass, while the SMP model is gold-plated brass. The SMP-M is made with gold-plated beryllium copper, and the 4.3-10 model is nickel-plated brass.

For more information, visit Pasternack’s website.

RS Components Power Distribution Units

RS Pro PDUs. (Image courtesy of RS Components.)
RS Pro PDUs. (Image courtesy of RS Components.)

RS Components introduced the RS Pro range of power distribution units (PDUs), which allow for the retrofit of power metering or networked power monitoring in a cost-effective manner with minimal disruption. Choices include up to 24 Euro 2-pin (Shuko or NF 2P+T), UK 3-pin or IEC socket outlets, and with CEE 7/7 or British-Standard (BS) mains plug, 16A or 32A BS4343 plug or IEC inlet.

All configurations are available as basic PDUs, which can be upgraded to metered PDUs with an ammeter module, or fully monitored PDUs featuring an SNMP management module with Ethernet ports for remote power monitoring.

Information concerning pricing and availability can be found on RS Components’ website.

Samsung Datacenter SSDs

PM883 SSD. (Image courtesy of Samsung.)
PM883 SSD. (Image courtesy of Samsung.)

Samsung unveiled the PM883, an 8 TB datacenter SATA drive. The PM883 includes 16Gb LPDDR4 DRAM based on 10 nanometer-class process technology. Also, the SSD includes a SATA 3.3-compliant Power Disable (PWDIS) feature that provides power management in individual SSD units to maximize the energy efficiency of datacenters.

The PM883 reads data sequentially up to 550 megabits per second (MB/s) and sequentially writes up to 520MB/s. Random reads deliver up to 98,000 IOPS and writes up to 28,000 IOPS. Regarding endurance, the PM883 has a total bytes written(TBW) rating of 5466TB for the 3840GB drive and 10,932TB for the 7680GB drive.

For more information, visit Samsung’s website.

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