Audio jack detector and analogue switch are used in portable applications

Offering a space-saving alternative to miniQFN10 and WCSP devices, the Vishay Siliconix DG2592 audio jack detector and DG2750, low voltage, dual SPDT analogue switch have a slim profile of just 0.35mm and measure 1.4 x 1.8mm. Typical miniQFN10 and WCSP packages feature profiles of 0.55 mm. The thin miniQFN10 package of both devices is 36% thinner, allowing for slimmer handheld healthcare instruments, smartphones, tablets, portable media players, digital cameras, and wearable IoT devices. Compared to WCSP packages, the package is claimed to offer easier surface mounting and is better suited for the flexible PCBs commonly used in portable designs.

The package exceeds current RoHS standards and is lead (Pb)-free. The DG2592 audio jack detector and pop noise control switch IC features ICs for detecting the presence of a stereo headset with a microphone and send/end control button. Operating range is 1.6 to 5.5V, low quiescent current is 10?A maximum at 1.8V, and 1.2? maximum MIC bias switch is for quick discharge and clamping. The detector offers ESD tolerance less than 8kV (human body model). The DG2750 low-on-resistance, bi-directional device is capable of switching negative swing audio without the need for a coupling capacitor.

Designed to operate from a single 1.8 to 5.5V power supply, the analogue switch conducts audio signals in both directions with very low distortion. Built on sub-micron CMOS low-voltage process technology, the device offers a very low quiescent current and provides latch-up protection over 600mA per JESD78. Samples of both devices are available now.

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