MAX98358 - PDM Input Class D Audio Power Amplifier

MAX98358是Maxim美信半导体公司的一款音频芯片产品，MAX98358是PDM Input Class D Audio Power Amplifier，本站介绍了MAX98358的封装应用图解、特点和优点、功能等，并给出了与MAX98358相关的Maxim元器件型号供参考。

MAX98358 - PDM Input Class D Audio Power Amplifier - 音频芯片 - High-Performance, Low-Noise Digital Input Class D Amplifier - 美信半导体

产品概述

The MAX98358 is a digital pulse-density modulated (PDM) input Class D power amplifier that provides Class AB audio performance with Class D efficiency. This IC offers five selectable gain settings (3dB, 6dB, 9dB, 12dB, and 15dB) set by a single gain-select input (GAIN). The IC can be configured to produce a left channel, right channel, or (left/2 + right/2) output from the stereo input data.

The MAX98358 takes a stereo pulse density modulated (SPDM) input signal directly into the DAC. Data on the rising edge of PDM_CLK is considered left-channel data while data on the falling PDM_CLK edge is right channel. A mono sum feature is also implemented with SPDM data input by summing the data from both rising and falling clock edges.

Active emissions-limiting, edge-rate limiting, and overshoot control circuitry greatly reduce EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices and reduces the component count of the solution.

The IC is available in 9-pin WLP (1.345mm x 1.435mm x 0.64mm) and 16-pin TQFN (3mm x 3mm x 0.75mm) packages and is specified over the -40°C to +85°C temperature range.

关键特性

以下关键特性由Maxim美信半导体提供：

Single-Supply Operation (2.5V to 5.5V)

3.2W Output Power into 4Ω at 5V

1.8mA Quiescent Current (VDD = 3.7V)

92% Efficiency (RL = 8Ω, POUT = 1.5W)

29µVRMS Output Noise (AV = 6dB)

Low 0.015% THD+N at 1kHz

Supported PDM_CLK Rates of 1.84MHz4.32MHz and 5.28MHz8.64MHz

Supports Left, Right, or Left/2 + Right/2 Outputs

Sophisticated Edge Rate Control Enables Filterless Class D Outputs

77dB PSRR at 217Hz

Low RF Susceptibility Rejects TDMA Noise from GSM Radios

Extensive Click-and-Pop Reduction Circuitry

Robust Short-Circuit and Thermal Protection

Available in Space-Saving Packages: 1.345mm x 1.435mm WLP (0.4mm Pitch), 3mm x 3mm TQFN

热门应用

蜂窝电话

笔记本电脑和上网本计算机

便携式媒体播放器

平板电脑

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