Datasheet > TFA9887

TFA9887

更新时间： 2024-02-29 20:02:43

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
20页	383K
描述
Audio system with adaptive sound maximizer and speaker protection

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技术参数
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TFA9887 技术参数

生命周期：	Obsolete	包装说明：	VFBGA,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.8
其他特性：	IT ALSO REQUIRES 1.8V DIGITAL NOMINAL SUPPLY VOLTAGE	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	R-PBGA-B29	长度：	3.193 mm
信道数量：	1	功能数量：	1
端子数量：	29	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出功率：	3.75 W
封装主体材料：	PLASTIC/EPOXY	封装代码：	VFBGA
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY, VERY THIN PROFILE, FINE PITCH
座面最大高度：	0.6 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	BALL
端子节距：	0.4 mm	端子位置：	BOTTOM
宽度：	2.071 mm	Base Number Matches：	1

TFA9887 数据手册

TFA9887

Audio system with adaptive sound maximizer and speaker

protection

Rev. 1 — 11 July 2012

Product short data sheet

1. General description

The TFA9887 is an audio system consisting of a high efficiency class-D audio amplifier,

and embedded DSP with a sophisticated speaker-boost and protection algorithm and an

intelligent DC-to-DC converter. It can safely deliver 2.65 W (RMS; THD = 1 %) output

power into a 4  speaker that is nominally only rated for 0.5 W. The integrated intelligent

DC-to-DC converter allows the system to deliver this power from a battery voltage of

3.6 V. The audio input interface is I²S and the control settings are communicated via an

I²C-bus interface.

The TFA9887 guarantees safe speaker operation under all operating conditions. It

maximizes acoustic output while ensuring diaphragm displacement and voice coil

temperature do not exceed rated limits. The processing is capable of providing a

significant improvement in sound volume and quality, while also ensuring reliable

operation. This function is based on and adaptive model that operates in all loudspeaker

environments (e.g. free air, closed box or vented box). Furthermore, advanced signal

processing ensures the quality of the audio signal is always optimized.

Adaptive DC-to-DC conversion boosts the supply voltage only when necessary (when the

output signal level is high). This maximizes the output power of the class-D audio amplifier

while limiting quiescent power consumption. The TFA9887 also adapts the amplifier gain

to limit battery current when the battery voltage is low.

The device features low RF susceptibility because it has a digital input interface that is

insensitive to clock jitter. The second order closed loop architecture used in a class-D

audio amplifier provides excellent audio performance and high supply voltage ripple

rejection.

The TFA9887 is available in a 29-bump WLCSP (Wafer Level Chip-Size Package) with a

400 m pitch.

2. Features and benefits

 Sophisticated speaker-boost and protection algorithm that maximizes speaker

performance while protecting the speaker:

 Fully embedded software, no additional license fee or porting required.

 Total integrated solution that includes DSP, amplifier, DC-to-DC, sensing and more.

 Adaptive excursion control - guarantees that the speaker membrane excursion never

exceeds its rated limit

 Real-time temperature protection - direct measurement ensures that voice coil

temperature never exceeds its rated limit

12 3 4 5 6 7...20

中文翻译

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与TFA9887相关器件

型号	品牌	获取价格	描述	数据表
TFA9887UK	NXP	获取价格	Audio system with adaptive sound maximizer and speaker protection
TFA9888UK	NXP	获取价格	Audio Amplifier
TFA9888UK/N1Z	NXP	获取价格	TFA9888 - Stereo Smart Audio Amplifier
TFA9891UK/N1AZ	NXP	获取价格	TFA9891 - Smart Audio Amplifier
TFA9895	NXP	获取价格	Boosted class-D audio amplifier with speaker boost protection and multiband dynamic range
TFA9895UK	NXP	获取价格	Boosted class-D audio amplifier with speaker boost protection and multiband dynamic range
TFA9896	NXP	获取价格	Boosted audio system with adaptive sound maximizer and speaker protection
TFA9896BUK	NXP	获取价格	Boosted audio system with adaptive sound maximizer and speaker protection
TFA9896UK	NXP	获取价格	Boosted audio system with adaptive sound maximizer and speaker protection
TF-ACG-203-A1-1010	AAEON	获取价格	Supports Remote Display Function

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