Date: 03/11/2008

Low power audio codec for media players and such devices

CS42L55 audio codec from Cirrus Logic consume 5.1 mW quiescent power in playback mode. The 24-bit CS42L55 reduces power consumption by nearly 50 percent compared to Class A/B amplification found in portable applications today. This helps to increase battery life by two additional hours. The CS42L55 features a small 5x5 mm footprint, and at 0.45 millimeters in height.

The CS42L55 features automatic, supply-adjusting bimodal Class H headphone driver technology and an innovative charge pump architecture with ground-centered outputs.

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. The CS42L55 also features analog volume control that helps to increase performance and reduce the overall noise floor. Further, pseudo differential outputs allow for routing signals while reducing noise coupling in analog signals.

Pricing: Each $1.73 in quantities of 10,000
Availability: Now in volumes