The TS4909 is a dual-mode low-power 150mW stereo headphone amplifier with capacitor-less and single-ended outputs. It features no output coupling capacitors necessary, pop-and-click noise reduction, operating from 2.2V to 5.5V, low current consumption, and high signal-to-noise ratio.
The TS4909 is a stereo audio amplifier designed to drive headphones in portable applications such as mobile phones and PDAs. It features an integrated phantom ground circuit topology that eliminates the need for heavy output coupling capacitors, which is critical for space-constrained portable devices. The device also supports a single-ended configuration to offer even lower power consumption by switching off the phantom ground.
| Output power (5V, 16Ω) | 158mW |
|---|---|
| Output power (3V, 16Ω) | 52mW |
| Supply current (typical @3V) | 2.0mA |
| Standby current (typical) | 10nA |
| Signal-to-noise ratio (typical @5V) | 105 dB |
| Crosstalk immunity (single-ended) | 110dB |
| Package | DFN10 3x3mm |
No, the device has an integrated phantom ground circuit that eliminates the need for heavy output coupling capacitors.
The TS4909 operates from a supply voltage of 2.2V to 5.5V.
The typical standby current is 10nA.