Tag Archives: MEMS

Bosch Sensortec says it has launched the world’s smallest MEMS accelerometers – the BMA530 and BMA580. BMA530 tracks activities with its step counter and is  suitable for wearables, and BMA580 targets hearables with voice activity detection. Compared to Bosch’s current generation accelerometer (BMA253), the BMA530 and BMA580 have a 76 percent smaller footprint and have been reduced in height from 0.95 mm ...

XMems Labs has revealed a mems-based loudspeaker that uses ultrasonics to reproduce bass notes. Branded ‘Cypress’, the company describes it as “full-range” and said that it “achieves >140dB low frequency SPL [sound pressure level] enabling a no-compromise replacement for coil speakers in noise-cancelling earbuds”. In an earbud, there would be three parts: a conventional wireless earbud receiver IC, a custom ...

Akoustis Technologies, a maker of RF bulk acoustic wave (BAW) filters, has launched foundry service making filters for wireless markets including phones, Wi-Fi, military, 5G infrastructure and automotive. Using 150mm silicon substrates, its process, XB1, covers 1.6 to 7GHz and can handle up to 4W CW (continuously) – plus it has XP3F in the pipleline aimed at 7 to 20GHz ...

Pickering Interfaces has teamed up with Menlo Microsystems to introduce MEMS switching to a range of PXI and PXIe RF multiplexer modules. “MEMS-based RF multiplexers deliver increased operational life – up to 300x, faster operating speed – up to 60x, higher bandwidth and increased RF power handling versus traditional electromechanical relay alternatives,” according to Pickering. “Insertion loss remains comparable with ...

CUI has three new micromachined omnidirectional microphones for portable devices and wearables, that can work across 20 to 20,000 Hz. CMM-2718AB-38162W-TR, CMM-2718AB-38164W-TR and CMM-2718AT-38164W-TR are analogue mems microphones with accurate -38dB ±1dB sensitivity ratings. There are top or bottom port versions, in packages down to 2.75 x 1.85 x 0.9mm, that can be reflow soldered. Acoustic overload point (AOP) is ...

Nanusens has designed an all-digital capacitance measurement circuit to integrate alongside its MEMS sensors. “This means that both the sensor structure and its detection circuitry can be made at the same time within a chip using standard CMOS processes on whatever process node is required,” said the Devon, UK company. “As a result, ASICs can now be made with several ...

Timing devices provide a mission-critical function in automotive systems. Even if a component or system goes awry, EMS clocking signals must continue operating without fail, says Etienne Winkelmuller, of SiTime. Vehicles are designed to work reliably for many years while operating in harsh conditions. If a component or system malfunctions, the vehicle is still expected to operate safely and reliably ...

Infineon has announced IM69D128S, a mems microphone for wearables, phones and IoT devices, emphasising its 520μA consumption and 69dB(A) signal to noise ratio. By switching clock frequency to trade bandwidth and SNR, the microphone can also be operated in a 420μA power saving mode and a 180μA in low power mode. There is also a 25μA (50μA max) stand-by with ...

CUI Devices has announced two MEMS microphones designed for active noise cancellation. CMM-2718AB-3815NC-TR (right) and CMM-2718AT-3817NC-TR (left) are omni-directional analogue microphones with bottom or top sonic ports, respectively. “Thanks to their flat frequency response from 20 to 10,000Hz, signal-to-noise ratios of 62 or 64dBA and acoustic overload points of 123 or 128dBspl, these microphones are ideal for use in active ...

Infineon has introduced three MEMS microphones to its portfolio. IM73A135 is an analogue microphone with a differential output. It has a signal-to-noise ratio of 73dB(A), -38dBV sensitivity and a 135dB SPL (sound pressure level) acoustic overload point (AOP). Packaging is 4 x 3 x 1.2mm IM72D128 is its digital counterpart in the same package with a PDM (pulse distribution modulated) output, and a ...