TPA3139D2开发板套件编程器的评估板-音频放大器规格书PDF中文资料

TPA3139D2属于开发板套件编程器的评估板-音频放大器。由德州仪器制造生产的TPA3139D2评估板 - 音频放大器音频放大器评估板是带有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了模拟放大器实例。放大器类型包括 AB 类、D 类、G 类、H 类和 K 类，输出为耳机、1 声道（单声道）、2 声道（立体声）、3 声道、4 声道、6 声道和 8 声道。

1 Features

• 2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply

• 2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supply

• Fast Turn-on time < 15 ms

• Wide supply range 3.5-V to 14.4-V

–

• Low idle current and small footprint for portable

audio applications

– 4 x 4 mm2 QFN-24 package

– 20-mA (12-V) idle current with 1SPW

modulation

– > 90% Class-D efficiency

• Flexible audio solution:

– MUTE signal for fast enable and enable of

outputs

– Single-ended or differential analog inputs

– Selectable gain: 20 dB and 26 dB

• Integrated Protections and Auto Recovery:

– Pin-to-pin, pin-to-ground, and pin-to-power

short circuit protection

– Thermal protection, undervoltage protection,

and overvoltage protection

– Power limiter and DC speaker protection

• Spread-spectrum modulation reduces EMI

emission

• Reduced solution size and cost:

– EN55022 EMC compliant with ferrite bead

filters

– No external heatsink required

2 Applications

• Mobile, portable radios

• Notebooks

• Bluetooth® speakers and wireless speakers

• Smart home appliance

• TVs and monitors

3 Description

The TPA3139D2 is a 10-W stereo Class-D audio

amplifier, featuring a fast turn-on time of <15 ms and

mute function. It consumes low idle current of only 20-

mA (12-V) and can operate down to 3.5-V, allowing

for longer audio playback. Along with a small, 4 x 4

mm2 QFN package, the TPA3139D2 is optimized for

2-cell or 3-cell battery-powered systems with the

space constraints. In addition, the Spread Spectrum

Control enables the use of inexpensive ferrite bead

filters while meeting EMC requirements for system

cost reduction.

To further simplify the design, the TPA3139D2

integrates essential protection features including

undervoltage, overvoltage, power limit, short circuit,

overtemperature, as well as DC speaker protection.

All of these protections support automatic recovery.