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 switch-off phases is eliminated by integrated circuitry.
Specially designed for applications requiring low power supplies, the TS4909 is capable of delivering 31 mW of continuous average power into a 32 Ω load with less than 1% THD+N from a 3 V power supply. Featuring an active low standby mode, the TS4909 reduces the supply current to only 10 nA (typ.). The TS4909 is unity gain stable and can be configured by external gain-setting resistors.
|DS4580: Dual mode low power 150 mW stereo headphone amplifier with capacitor-less and single-ended outputs||9.0||581 KB|
|AN2622: TS4909 low power stereo headphone amplifier evaluation board user guidelines||1.2||105 KB|
|ST’s solutions for mobile devices||3.2||2 MB|
|製品型番||パッケージ||Packing Type||Operating Temperature (°C) (min)||Operating Temperature (°C) (max)||Marketing Status||Unit Price (US$) *||数量||ECCN (US)||Country of Origin||More info||Order from ST||Order from Distributors|
|TS4909IQT||VDFPN 10 3x3x1.0||Tape And Reel||-40||85||Active : Product is in volume production||0.454||1000||EAR99||MALAYSIA||MORE INFO||直接購入 買い物かごに追加||DISTRIBUTOR AVAILABILITY|
|製品型番||Marketing Status||パッケージ||Grade||RoHS Compliance Grade||Material Declaration**|
|TS4909IQT||アクティブ||VDFPN 10 3x3x1.0||Industrial||Ecopack1|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.