EE – March 2018 Product Picks

MCU connectivity options

The SAM D5x and SAM E5x 32-bit microcontroller (MCU) families offer extensive connectivity interfaces and hardware-based security for a variety of applications. Both families include a Quad Serial Peripheral Interface (QSPI) with an Execute in Place (XIP) feature, allowing use of high-performance serial flash memories—which are both small and inexpensive, compared with traditional pin-parallel flash—for external memory needs. The SAM D5/E5 devices also feature a Secure Digital Host Controller (SDHC) for data logging, a Peripheral Touch Controller (PTC) for capacitive touch capabilities, and what the vendor calls best-in-class active power performance (65 μA/MHz) for applications requiring power efficiency. Additionally, the SAM E5 family includes two CAN-FD ports and a 10/100-Mb/s Ethernet media access controller (MAC) with IEEE 1588 support, making it suited for industrial automation, connected home, and other IoT applications. Microchip

Compact connector system

The Micro-Lock Plus wire-to-board connector system is suitable for customers seeking high performance, compact size, and retention security. Featuring a 1.5-A current rating, small footprint, and positive latch, the terminal solution targets OEM engineers working in space-constrained environments. Designed for industries such as automotive, consumer, and industrial automation, the Micro-Lock Plus connector system is suitable for a variety of applications, including vehicle switches, robotics, drones, home appliances, and power tools.

Offered with 2 to 42 circuits, single and dual rows, and vertical and horizontal plug configurations, this product was designed with flexibility in mind. It is one of a few 1.25-mm-pitch compact connector systems rated at a 105˚C operating temperature and 1.5-A current rating suitable for use in general market applications. Connectors are offered in a variety of colors to aid assembly via color coding. To ensure that connectors are fully mated and avoid end-product failure in applications subject to shock, vibration, and rough handling, the Micro-Lock Plus Connector System features a wide positive latch that delivers an audible click, providing assemblers added peace of mind. Secure contact and terminal retention are also achieved via the robust metal solder tabs and a dual-contact terminal design. Tin-bismuth terminals provide a clean and uninterrupted signal without the whiskering associated with tin plating and added cost of gold plating. Molex

Thin back-flip FPC

The compact FH53M Series flexible printed circuit (FPC) connector saves valuable PCB real estate via a back-flip-style actuator that minimizes the required mounting area. The connector has a 0.25-mm pitch, mounted depth of 3.2 mm, and height of only 0.65 mm. With a weight of only 0.01 g, the FPC connector is designed for a range of portable electronics including consumer, medical, point-of-sale, and wearable devices. It delivers the high-density transmission required to support Embedded DisplayPort (eDP) ver1.3 and MIPI D-PHY ver1.1 standards. The FH53M Series FPC connector has a user-friendly design, which includes wide tapers providing smooth FPC insertion. The connector has a top contact design that employs a movable metal spring latch, which ensures high reliability and signal continuity.

The metal latching mechanism allows for horizontal FPC insertion/withdrawal and produces a clear tactile click when insertion is complete. The FPC tab lock firmly holds the FPC in place until the actuator is locked. The back-flip-style actuator and bottom contact design provides a high retention force. The contact design also prevents solder wicking and flux penetration. The FH53M Series is currently available in a 7-position version. Tooling for additional positions including 9, 11, 33, 39, 41, and 51 is planned for release later this year. The connector meets halogen-free requirements and is RoHS compliant. The high-speed FH53M Series is designed for portable electronics that require high-speed transmission, including smart phones, cameras and video recorders, notebooks and tablets, DVD and Blu-ray players, portable music players, handheld gaming systems, and most portable medical devices. Hirose

Real-time spectrum analyzer

A new real-time spectrum analyzer combines the power of a high-performance swept spectrum analyzer with real-time performance, according to the vendor. Available in 3.2-GHz and 6.5-GHz models, all RSA5000 Series analyzers from RIGOL provide resolution bandwidth (RBW) down to 1 Hz, a noise floor as low as -165 dBm, and a full span sweep as fast as 1 ms. In addition, the analyzer features up to 40 MHz of real-time bandwidth, a minimum probability of intercept (POI) of 7.45 µs, seven visualization modes, and triggering capability, providing a complete analysis package for engineers developing and integrating wireless technologies. The RSA5000 takes 146,484 FFTs per second, providing a minimum 100% POI of 7.45 µs. This performance allows users to capture transient signals as short as 7.45 µs and display accurate power 100% of the time, the vendor says. The RSA5000 provides seven data views to allow engineers to visualize complex RF environments. Density displays help users see time-varying signals and resolve hidden and superimposed signals in the same frequency band. Spectogram displays allow users to evaluate changes in signal behavior over time and are useful in identifying hopping patterns and characterizing PLLs. Power versus time displays show the RF power for the real-time span over a user-defined time span, helping measure the duration and timing of pulsing signals and characterizing signals with amplitude modulation like ASK. The RSA5000 utilizes a QuadCore processor and is built on a Linux operating system. RIGOL

Low-power active mixer

The LTC5562, a low-power, high-performance active double-balanced mixer, is capable of 50-Ω matching over a frequency range of 30 MHz to 7 GHz. It can be used in either frequency upconversion or downconversion applications, with conversion gain of 2 dB. The device runs on a single 3.3-V supply rail, drawing 40-mA nominal operating current. If lower power consumption is needed, the mixer can be operated as low as 15 mA, supporting a range of portable and transportable RF applications. The mixer offers performance of +20 dBm OIP3 at 3.6 GHz. The combination of low power, broadband operation, and wide range is suitable for portable test instruments, battery-powered public safety and emergency radios, military manpack radios, portable modems, broadband access points and small cells, license-free band radios, remote controls, broadcast radios, and UAV/drone radios. The LTC5562 is offered in a 10-lead, 2-mm x 2-mm plastic QFN package. It is rated for operation from -40°C to 105°C case temperature. An enable pin allows an external controller to shut down the mixer for extra power savings. When disabled, the device typically draws only 10-μA supply current. Analog Devices

Broadband benchtop driver amplifier

Model STB-5037032515-1515-S1 is a broadband benchtop driver amplifier with a typical small-signal gain of 25 dB, a nominal P1dB of +15 dBm, and PSAT of +18 dBm across the frequency range of 50 to 70 GHz. The amplifier requires a single-phase AC voltage in the range of 100 to 240 VAC, which can be supplied by a wall outlet. An LED helps to indicate the working status of the amplifier. The input and output port configurations are both WR-15 waveguide with UG-385/U flanges. Sage Millimeter

Apochromatic objectives

New super-apochromatic silicone-immersion objectives are suitable for use in a variety of digital-imaging applications, including high-resolution observations deep within living tissue. They provide high sensitivity to fluorescence emissions, resulting in clear images that do not contain color shift. The objectives correct for spherical and chromatic aberrations for the visible and the NIR spectra. The RoHS-compliant objectives are available in five models, with magnifications ranging from 4X to 60X. The objectives have a field number of 26.5 and focal lengths ranging from 3 mm to 45 mm. All optical elements in the objectives feature antireflective coatings for increased transmission through the lens. Manufactured by Olympus and available from Edmund Optics

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