NXP公司的TDF8551J是采用BCDMOS技術(shù)的I2C總線控制4x45W功率放大器,包含有四個BTL配置的放大器,能驅(qū)動四個揚(yáng)聲器:兩個前面和兩個后面通路.每個放大器可獨(dú)立配置,線路驅(qū)動模式的增益為20dB,放大模式的增益為26dB.此外,TDF8551J還集成了6個輸出電壓穩(wěn)壓器和兩個功率開關(guān).本文介紹了TDF8551J主要特性,方框圖和測試與應(yīng)用電路圖.TDF8551J:I2C-buscontrolled4x?45WpoweramplifierwithsixvoltageregulatorsTheTDF8551Jhasacomplementaryqu
NXP公司的TDF8551J是采用BCDMOS技術(shù)的I2C總線控制4x45W
功率放大器,包含有四個BTL配置的放大器,能驅(qū)動四個
揚(yáng)聲器:兩個前面和兩個后面通路.每個放大器可獨(dú)立配置,線路驅(qū)動模式的增益為20
dB,放大模式的增益為26dB.此外, TDF8551J還集成了6個輸出電壓穩(wěn)壓器和兩個功率
開關(guān).本文介紹了TDF8551J主要特性,方框圖和測試與應(yīng)用電路圖.
TDF8551J: I2C-
buscontrolled 4x?45 W power amplifier with six voltage regulators
The TDF8551J has a complementary quad audio power amplifier that uses BCDMOS technology. It contains four amplifiers configured in Bridge-Tied Load (BTL) to drive four speakers: two front and two rear channels. The I2C-bus enables diagnostic information of each amplifier and its speaker to be read separately. Both front and both rear channel amplifiers can be configured independently in line driver mode with a gain of 20 dB (differential output) or amplifier mode with a gain of 26 dB (BTL output).
The TDF8551J has six output voltage regulators and two power switches:
• Four switchable regulators and two standby regulators
• Two power switches with loss-of-ground protection and surge protection
• Second supply
pinto reduce dissipation by means of an external DC-to-DC converter
