10W+10W dual BTL class-D audio amplifier

The TDA7491P is a dual BTL class-D audio amplifier with single power supply designed for LCD TVs and monitors.

Thanks to the high efficiency and exposed-pad-down (EPD) package no separate heatsink is required.

Furthermore, the filterless operation allows a reduction in the external component count.

The TDA7491P is pin-to-pin compatible with the TDA7491LP and TDA7491HV.

Key Features

  • 10 W + 10 W continuous output power:RL = 6 Ω, THD = 10% at VCC = 11 V
  • 9.5 W + 9.5 W continuous output power:RL = 8 Ω, THD = 10% at VCC = 12 V
  • Wide range single supply operation (5 V - 18 V)
  • High efficiency (η = 90%)
  • Four selectable, fixed gain settings of nominally 20 dB, 26 dB, 30 dB and 32 dB
  • Differential inputs minimize common-mode noise
  • Filterless operation
  • No ‘pop’ at turn-on/off
  • Standby and mute features
  • Short-circuit protection
  • Thermal overload protection
  • Externally synchronizable

电路原理图

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设计

技术文档

产品规格
Description Version Size
DS5297 DS5297: 2 x 10-watt dual BTL class-D audio amplifier 6.0 1 MB
应用手册
Description Version Size
AN3412 AN3412: 10 W + 10 W dual BTL class-D audio amplifier demonstration board based on the TDA7491P 1.1 1017 KB
AN4170 AN4170: 20 W + 20 W dual BTL class-D audio amplifier demonstration board based on the TDA7491HV 1.0 1 MB
AN4171 AN4171: 25 W mono BTL class-D audio amplifier demonstration board based on the TDA7491MV 1.0 792 KB
AN3956 AN3956: 5 W + 5 W dual BTL class-D audio amplifier demonstration board based on the TDA7491LP 1.0 1 MB
AN3385 AN3385: 50 W + 50 W dual BTL class-D audio amplifier demonstration board based on the TDA7492 1.0 821 KB
AN4015 AN4015: Dual-BTL class-D audio amplifier demonstration board based on the TDA7498E 1.0 2 MB

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样片和购买

型号 Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
TDA7491P13TR PowerSSO 36 Tape And Reel -40 85 Active 1.882 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TDA7491P13TR ActivePowerSSO 36IndustrialEcopack2 0
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(**) 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.

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