Electronics Weekly – Skyworks Waveguide Circulators, TT Power Inductors & More
Vincent Charbonneau posted on July 05, 2019 |

Maxim Bi-directional Current Sense Amplifier

MAX40056. (Image courtesy of Maxim.)
MAX40056. (Image courtesy of Maxim.)

Maxim has unveiled its MAX40056 bidirectional current sense amplifier with pulse-width modulation (PWM) rejection, which enables users to improve motor efficiency and reduce vibration.

MAX40056 rejects PWM slew rates that are greater than 500V/µs and settles within 500ns to provide 0.3 percent accurate, full-scale winding current measurement. Higher PWM frequency smooths out the current flow and reduces torque ripple, resulting in more efficient motor operation. Accurate winding current measurement at low duty cycle also helps reduce or virtually eliminate vibration when the motor is running at a slow speed.

For more information, visit Maxim’s website.

Microchip Clock Buffers

ZL4029X clock buffer. (Image courtesy of Microchip.)
ZL4029X clock buffer. (Image courtesy of Microchip.)

Microchip has introduced four 20-output differential clock buffers that exceed PCIe Gen 5 jitter standards for data center applications. The buffers are well suited to chipsets where distributed clocks are required across several peripheral components, such as CPUs, FPGAs and Physical layers (PHYs) in data center servers and storage devices, along with other PCIe applications.

In addition, the devices’ low additive jitter of approximately 20 femtoseconds (~20 fs) exceeds the DB2000Q/QL specification of 80 fs.

For more information, visit Microchip’s website.

Skyworks Waveguide Circulators

SKYFR-001692 circulator. (Image courtesy of Skyworks Solutions.)
SKYFR-001692 circulator. (Image courtesy of Skyworks Solutions.)

Skyworks Solutions has launched a family of mini circulators for 5G infrastructure. Circulators, which play an important role in protecting RF elements from excessive signal reflection, help eliminate performance risks and safeguard vital equipment. The semini circulators, which are available in 7mm and 10mm packages, are compact devices that provide optimal power handling and low insertion loss, improving the efficiency of the accompanying power amplifier.

For more information, visit Skyworks’s website.

TI Current-Sense Amplifier

INA185 current-sense amplifier. (Image courtesy of Texas Instruments.)
INA185 current-sense amplifier. (Image courtesy of Texas Instruments.)

Texas Instruments (TI) has developed a small current-sense amplifier in a leaded package and comparators with an internal 1.2-V or 0.2-V reference. The INA185 current-sense amplifier (and open-drain TLV4021 and push-pull TLV4041 comparators) enable users to design smaller systems while maintaining performance. In addition, pairing the amplifier with one of the comparators produces overcurrent detection.

For more information, visit TI’s website.

TT Power Inductors

HM79M power inductor. (Image courtesy of TT Electronics.)
HM79M power inductor. (Image courtesy of TT Electronics.)

TT Electronics has released its HM79M family of surface mount power inductors with ferrite cores for industrial uses, including automation systems, DC-DC converters and EMI filters.

The HM79M series offers system designers low DC resistance and high saturation current with an operating temperature range of -55°C to +125°C. Available in a range of inductances and package sizes, these inductors are well suited for efficient DC-DC converters using high switching frequencies of up to 3MHz, as well as EMI and low pass DC filter.

For more information, visit TT’s website.

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