Datasheet > TFA9879

TFA9879

更新时间： 2024-09-28 06:02:19

品牌	Logo	应用领域
恩智浦 - NXP		音频放大器便携式
页数	文件大小	规格书
60页	1415K
描述
Mono BTL class-D audio amplifier for portable applications with digital input

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TFA9879 数据手册

TFA9879

Mono BTL class-D audio amplifier for portable applications

with digital input

Rev. 02 — 15 October 2010

Product data sheet

1. Introduction

The TFA9879 is a high-efficiency filter-free mono class-D audio amplifier with two

separate digital inputs for mobile applications.

2. General description

The TFA9879 contains a processor that supports a range of sound processing features

including a 5-band parametric equalizer, separate bass and treble control, a dynamic

range compressor, soft clip control and volume control. Excellent audio performance

combined with high Power Supply Rejection Ratio (PSRR) is achieved through the use of

a closed loop configuration.

Two independent digital audio inputs (I²S-bus / PCM / IOM2) are available for connecting

both a baseband and a multimedia processor.

The TFA9879 is available in a HVQFN24 package.

3. Features and benefits

3.1 General features

Closed loop amplifier for:

High power supply rejection ratio

Excellent audio performance

Digital input for high RF immunity

High efficiency for maximizing battery life

Wide supply voltage range (fully operational from 2.5 V to 5.5 V)

Delivers high output power into 4 Ω and 8 Ω load impedances

Phase-Locked Loop (PLL); no system clock required

Protection including diagnostics via I²C-bus:

OverCurrent Protection (OCP) to protect against short circuits across the speaker,

to the supply line or to ground

OverTemperature Protection (OTP)

Digital inputs protected with UnderFrequency Protection (UFP), OverFrequency

Protection (OFP) and Invalid Bit-clock Protection (IBP)

‘Pop noise’ free at power-up/power down, during sample rate switching and when

switching between digital inputs

Four separate I²C-bus addresses for multi-channel applications

12 3 4 5 6 7...60

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