LM48824中文资料37mW 立体声模拟输入耳机放大器数据手册TI规格书

描述 Description

The LM48824 is a Class G, ground-referenced stereo headphone amplifier designed for portable devices. The LM48824 features TI’s ground-referenced architecture, which eliminates the large DC blocking capacitors required by traditional headphone amplifiers, saving board space and minimizing system cost.

The LM48824 takes advantage of TI’s patent-pending Class G architecture offering power savings compared to a traditional Class AB headphone amplifier. Additionally, output noise is improved by common-mode sensing that corrects for any differences between the amplifier ground and the potential at the headphone return terminal, minimizing noise created by any ground mismatches.

A high output impedance mode allows the LM48824's outputs to be driven by an external source without degrading the signal. Other features include flexible power supply requirements, differential inputs for improved noise rejection, a low power (2.5μA) shutdown mode, and a 32-step I2C volume control with mute function.

The LM48824's superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48824 is available in an ultra-small 16-bump, 0.4mm pitch DSBGA package (1.69mm x 1.69mm)

特性 Features

• Class G Power Savings
• Common-Mode Sense
• High Output Impedance in Shutdown
• Advanced Click-and-Pop Suppression
• Low THD Mode Option
• Quiescent Power Supply Current at 3.6V: 0.9mA (typ)
• Output Power/Channel at VDD = 3.6V (RL = 32Ω, THD+N ≤ 1%): 29 mW (Typ)
• Shutdown Current: 2.5 μA (Typ)

简介

LM48824属于开发板套件编程器的评估板-音频放大器。由TI制造生产的LM48824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。