TS4909

1. All voltage values are measured with respect to the ground pin.
2. Pd is calculated with T_amb = 25°C, T_junction = 150°C.
3. Caution: this device is not protected in the event of abnormal operating conditions, such as for example, short-circuiting between any one output pin and ground, between any one output pin and V_CC, and between individual output pins.

The TS4909 is a stereo audio amplifier designed to drive headphones in portable applications.

The integrated phantom ground is a circuit topology that eliminates the heavy output coupling capacitors. This is of primary importance in portable applications where space constraints are very high. A single-ended configuration is also available, offering even lower power consumption because the phantom ground can be switched off.

Pop-and-click noise during switch-on and switchoff phases is eliminated by integrated circuitry.

Specially designed for applications requiring low power supplies, the TS4909 is capable of delivering 31mW of continuous average power into a 32 load with less than 1% THD+N from a 3V power supply.

Featuring an active low standby mode, the TS4909 reduces the supply current to only 10nA (typ.). The TS4909 is unity gain stable and can be configured by external gain-setting resistors.