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TDF8541

NXP
Part Number TDF8541
Manufacturer NXP
Description I2C-bus controlled 4 x 45 W power amplifier
Published Jun 24, 2016
Detailed Description TDF8541 I2C-bus controlled 4  45 W power amplifier Rev. 3 — 13 December 2011 Product data sheet 1. General descriptio...
Datasheet PDF File TDF8541 PDF File

TDF8541
TDF8541

Overview
TDF8541 I2C-bus controlled 4  45 W power amplifier Rev.
3 — 13 December 2011 Product data sheet 1.
General description The TDF8541 is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotive applications.
It has full I2C-bus controlled diagnostics, including start-up diagnostics.
The TDF8541 can operate at a battery voltage as low as 6 V making this amplifier suitable for stop/start-car operation.
The amplifier uses a complementary DMOS output stage in a Silicon-On-Insulator (SOI)based BCD process.
The DMOS output stage ensures a high power output signal with perfect sound quality.
The SOI-based BCD process ensures a robust amplifier, where latch-up cannot occur, with good separation between the four independent channels, with every component isolated and without substrate currents.
2.
Features and benefits  Stop/start-car prepared: keeps operating without audible disturbance during engine start at a battery voltage as low as 6 V  Operates in either legacy (non I2C-bus) or I2C-bus modes (3.
3 V and 5 V compliant)  Four hardware-programmable I2C-bus addresses  Can drive 2  and 4  loads  Speaker fault detection  Start-up diagnostics with load detection: open, short, present; filtered for door-slam and chatter relays  AC load (tweeter) detection with low and high current mode  Gain select after start-up without audible disturbance  Independent selectable soft mute of front and rear channels  Programmable gain (26 dB and 16 dB), independently programmable for the front and rear channels  Line driver mode supports engine start at a battery voltage as low as 6 V (16 dB and mid-tap voltage 0.
25VP)  Programmable clip detect: 2 %, 5 % or 10 %  Programmable thermal pre-warning  Pin STB can be programmed/multiplexed with second-clip detect  Clip information of each channel can be directed separately to pin DIAG or pin STB  Independent enabling of thermal- , clip- or load fault information (short acr...


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