onsemi FAB2210UCX

The FAB2210 combines a Class-G stereo capacitorfree headphone amplifier with a mono Class-D speaker amplifier into one IC package. The headphone and speaker amplifiers incorporate Class-G and Class-D topologies, respectively, for low power dissipation, which extends battery runtime. The Class-G headphone amplifier incorporates an integrated charge pump that generates a negative supply rail for ground-centered headphone outputs. The Class-D amplifier includes programmable Dynamic Range Compression (DRC) that maximizes Sound Pressure Level (SPL) for maximum loudness, while protecting the speaker from damage. The noise gate can automatically mute the speaker or headphone amplifiers to reduce noise when input signals are LOW.

• High-Efficiency Stereo Class-G Headphone
• 100 dB SNR Headphone Amplifier
• Capacitor-Free Outputs for High-Frequency Response
• Mono Filterless Class-D Speaker Amplifier
• 91% Efficiency for Extended Battery Runtime
• DRC for Louder SPL and Speaker Protection
• 3.3 W into 4 Ω at 5.0 V, THD+N < 10%
• 1.27 W into 8 Ω at 4.2 V, THD+N < 10%
• Low EMI Edge-Rate Controlled output
• 97 dB Signal-to-Noise Ratio (SNR)
• Click and Pop Suppression
• Selectable Single-Ended or Differential Audio Inputs for High Common-Mode Rejection
• High Power Supply Rejection Ration (PSRR) Rejects 217 Hz GSM Noise