1.2 W differential input/output audio power amplifier with selectable standby

The TS4994FC is an audio power amplifier capable of delivering 1W of continuous RMS output power into an 8Ω load @ 5V. Due to its differential inputs, it exhibits outstanding noise immunity.

An external standby mode control reduces the supply current to less than 10nA. An STBY MODE pin allows the standby to be active HIGH or LOW. An internal thermal shutdown protection is also provided, making the device capable of sustaining short-circuits.

The device is equipped with common mode feedback circuitry allowing outputs to be always biased at VCC/2 regardless of the input common mode voltage.

The TS4994 is designed for high quality audio applications such as mobile phones and requires few external components.

Key Features

  • Available in 9-bump flip-chip (300mm bump diameter)
  • Ultra fast startup time: 15ms typ.
  • Lead-free package
  • Ultra-low consumption in standby mode (10nA)
  • 90dB CMRR @ 217Hz
  • Differential inputs
  • 100dB PSRR @ 217Hz with grounded inputs
  • Near-zero pop & click
  • 1.2W rail-to-rail output power @ VCC =5V, THD = 1%, F = 1KHz, with 8Ω load
  • Selectable standby mode (active low or active high)
  • Operating range from VCC = 2.5V to 5.5V


0 ダウンロード



Description バージョン サイズ
DS4268 DS4268: 1.2 W differential input/output audio power amplifier with selectable standby 2.2 674 KB

プレゼンテーション & トレーニング資料

Description バージョン サイズ
ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0 1 MB

Publications and Collaterals

Description バージョン サイズ
ST’s solutions for mobile devices 3.2 2 MB
サポート & コミュニティ

サンプル & 購入

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 (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
TS4994EIJT Chip Scale Package 0.5mm pitch Tape And Reel - - Active 0.381 1000 NEC EAR99 CHINA MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
TS4994EIJT アクティブChip Scale Package 0.5mm pitchIndustrialEcopack3 0 0

(**) 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.