Analog switch enhances audio quality

Unterpremstaetten, Austria —austriamicrosystems has expanded its analog switch portfolio with the AS1747, a dual SPDT (single-pole/double-throw) low-voltage analog signal switch.

The switch, which is the first within a family of switches with negative signal capability, allows designs without AC coupling capacitance in audio applications.

The AS1747 combines low on-resistance of 0.4Ω with channel-to-channel matching of less then 0.03Ω, reducing the amount of signal deviations between channels to a minimum. Additionally, the AS1747 shows on-resistance flatness of 0.25Ω. Altogether this improves total harmonic distortion (THD+N) to 0.01% and yields high audio signal quality.

The AS1747 can handle negative signals with a single positive 1.8V to 5.5V power supply and is available in a 10-pin TDFN(3x3mm) package suitable for operating environments ranging from -40 to +85°C.

Pricing: $1.07 each in 1,000-unit quantities.
Availability: Now.
Datasheet: Click here.


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