Datasheet > TFA9812

TFA9812

更新时间： 2024-02-09 04:43:42

品牌	Logo	应用领域
恩智浦 - NXP		音频放大器
页数	文件大小	规格书
66页	385K
描述
BTL stereo Class-D audio amplifier with I2S input

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TFA9812 技术参数

生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	HVQCCN,	针数：	48
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.83
商用集成电路类型：	AUDIO AMPLIFIER	谐波失真：	10%
JESD-30 代码：	S-PQCC-N48	长度：	7 mm
信道数量：	2	功能数量：	1
端子数量：	48	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出功率：	15 W
封装主体材料：	PLASTIC/EPOXY	封装代码：	HVQCCN
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
认证状态：	Not Qualified	座面最大高度：	1 mm
最大供电电压 (Vsup)：	20 V	最小供电电压 (Vsup)：	8 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	宽度：	7 mm
Base Number Matches：	1

TFA9812 数据手册

TFA9812

BTL stereo Class-D audio ampliﬁer with I²S input

Rev. 01 — 30 October 2008

Preliminary data sheet

1. General description

The TFA9812 is a high-efﬁciency Bridge Tied Load (BTL) stereo Class-D audio ampliﬁer

with a digital I²S audio input. It is available in a HVQFN48 package with exposed die

paddle. The exposed die paddle technology enhances the thermal and electrical

performances of the device.

The TFA9812 features digital sound processing and audio power ampliﬁcation. It supports

I²C control mode and Legacy mode. In Legacy mode I²C involvement is not needed

because the key features are controlled by hardware pin connections.

A continuous time output power of 2 × 12 W (R_L= 8 Ω, V_DDP= 15 V) is supported without

an external heat sink. Due to the implementation of a programmable thermal foldback

even for high supply voltages, higher ambient temperatures, and/or lower load

impedances, the device operates without sound interrupting behavior.

TFA9812 is designed in such a way that it starts up easily (no special power-up sequence

required). It features various soft and hard impact protection mechanisms to ensure an

application that is both user friendly and robust.

A modulation technique is applied for the TFA9812, which supports common mode choke

approach (1 common mode choke only per BTL ampliﬁer stage). This minimizes the

number of external components.

2. Features

2.1 General features

I 3.3 V and 8 V to 20 V external power supply

I High efﬁciency and low power dissipation

I Speaker outputs fully short circuit proof across load, to supply lines and ground

I Pop noise free at power-up/power-down and sample rate switching

I Low power sleep mode

I Overvoltage and undervoltage protection on the 8 V to 20 V power supply

I Undervoltage protection on the 3.3 V power supply

I Overcurrent protection (no audible interruptions)

I Overdissipation protection

I Thermally protected and programmable thermal foldback

I Clock error protection

I I²C mode control or Legacy mode (i.e. no I²C) control

I Four different I²C addresses supported

I Internal Phase-Locked Loop (PLL) without using external components

12 3 4 5 6 7...66

中文翻译

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与TFA9812相关器件

型号	品牌	获取价格	描述	数据表
TFA9812HN	NXP	获取价格	BTL stereo Class-D audio amplifier with I2S input
TFA9812HN/N1,557	NXP	获取价格	TFA9812HN
TFA9815	NXP	获取价格	Stereo full-bridge audio amplifier 2 x 17 W
TFA9815T	NXP	获取价格	Stereo full-bridge audio amplifier 2 x 17 W
TFA9815T/N1,112	NXP	获取价格	TFA9815 - Stereo full-bridge audio amplifier 2 x 17 W SOP 32-Pin
TFA9815T/N1,512	NXP	获取价格	TFA9815 - Stereo full-bridge audio amplifier 2 x 17 W SOP 32-Pin
TFA9815T/N1,518	NXP	获取价格	TFA9815 - Stereo full-bridge audio amplifier 2 x 17 W SOP 32-Pin
TFA9841J	NXP	获取价格	1-channel audio amplifier
TFA9841J/N1,112	NXP	获取价格	TFA9841J
TFA9842AJ	NXP	获取价格	7.5 W stereo power amplifier with volume control

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