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Portable audio codec improves battery life

Tokyo—Cirrus Logic Inc. has developed a portable audio codec dubbed the CS42L55 that consumes 5.1 mW of quiescent power in playback mode and features a bimodal, patent-pending Class H technology. According to Cirrus, the CS42L55 reduces power consumption by nearly 50 percent compared to Class A/B amplification found in portable applications today. The CS42L55 features an ultra small 5×5 mm footprint, and a height of 0.45 millimeters.

Based on 24-bit advanced multibit Delta-Sigma technology, the CS42L55 operates from a single 1.8 V or 2.5 V power supply and can deliver 1 VRMS line output from a 1.8 V supply. When driving headphones from the same supply it can deliver 17 milliwatts per channel of high-quality, 96 dB dynamic range audio. The CS42L55 also provides a 2:1 stereo input multiplexer and a USB master clock input and supports sample rates up to 48 kHz.

Pricing: $1.73 in quantities of 10,000.
Availability: Today in a 36-pin xQFN package.
Datasheet: Click here.

Cirrus Logic Inc., www.cirrus.com

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