SKY76206-21

Low Power Multi-Level Class-D Audio Amplifier

The Skyworks SKY76206-21 digital headphone amplifier IC is a complete solution designed to deliver the functional and electrical requirements of a Class D audio amplifier, but by using an innovative architecture deliver world class performance at ultra-low power levels.

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Specifications

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DescriptionLow Power Multi-Level Class-D Audio Amplifier

Features

Low power consumption:
- Quiescent power <900 μW
- Standby power (I2C activity) <100 μW
- Reset power <6 μW
High incremental output efficiency: 84% (62 mW O/P to 16Ω)
High quality audio performance:
- DNR > 110 dB (A-wt)
- THD+N: –79 dB
- PSRR: –94 dB (<5 kHz)
Low latency: < 5 μS
Supply voltage inputs:
- VBAT (3.3V to 4.9V)
- VDDIO (1.2V to 1.8V)
Internally generated low-voltage supplies
Operating Modes:
- Reset
- Standby
- Audio playback
- Two output gain modes, 0 dB (Normal) and +6 dB (High)
PDM interface
- 3.072 MHz PDM Clock, mono 1-bit PDM Data
- 3.072 MHz PDM Clock, stereo 1-bit PDM Data
- 3.072 MHz PDM Clock, 1.5-bit mono PDM Data
- 6.144 MHz PDM Clock, 1.5-bit stereo PDM Data

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