Wireless keyless entry and tyre pressure monitoring systems based on SAW resonators are catching on in a big way in automotive engineering. Although many applications require ISM bandwidth only momentarily, mutual interference can result if different signals are transmitted simultaneously on the same frequency.
To combat this Epcos developed a two-in-one SAW resonator; the R770 (433,81/434,06 MHz) and R771 (314,875/315,125 MHz). Each type contains two electrically independent, high-precision single-port SAW resonators in a QCC8C SMD ceramic package with a footprint of 5 x 5 mm. Both single-port resonators are implemented on the same chip and fabricated simultaneously in an identical process. This results in superior synchronism against temperature and in frequency response. Almost any desired frequency difference between the two resonators can be designed. In the send oscillator, the two resonators are alternately connected to the oscillator circuit. Switching is done via PIN diodes.
140 W USB-C PD reference design Altron Arrow
Electronics Technology
The design has a wide input range of 90 to 264 V AC, 50-60 Hz, and supports an output voltage range of 5 to 28 V (USB-PD 3.1 specification).
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Passive Components
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Passive Components
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Enclosures, Racks, Cabinets & Panel Products
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Telecoms, Datacoms, Wireless, IoT
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Enclosures, Racks, Cabinets & Panel Products
he HYPB series from Hammond is a hygienic type 4X stainless steel pushbutton enclosure designed for use in environments where regular high temperature, high-pressure washdowns are required.
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Power Electronics / Power Management
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Passive Components
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Analogue, Mixed Signal, LSI
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Passive Components
Panasonic Industries’ SMT capacitor series all benefit from the longest lifetime plus the lowest ESR values currently available.
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