Maxim公司的MAX98358是脉冲密度调制(PDM)数字输入D类放大器,提供AB类音频性能和D类效率,可选择增益设定(3dB, 6dB, 9dB, 12dB和15dB),单电源2.5V- 5.5V,5V时4Ω输出功率3.2W,效率92%(RL = 8Ω, POUT = 1.5W),1kHz时的THD+N为0.015%,增益为6dB时的输出噪音29μVRMS,主要用在条记本电脑,手机,平板电脑和手持媒体播放器(PMP).本京电港论坛文章先容了MAX98358主要特点和简化框架图,立体声工作电路原理图纸以及音频接口板AUDINT1主要特点,简化EV系统框架图,电路原理图纸,质料清单和PCB线路板设计原理图. 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. MAX98358主要特点: Single-Supply Operation (2.5V to 5.5V) 音频接口板AUDINT1 The Maxim Audio Interface 1 (AUDINT1) board providesboth an I2C and I2S interface to facilitate the evaluationof compatible Maxim Development (DEV) boards. MaximDEV boards that are evaluated with the AUDINT1 interfaceboard can require custom GUI software, which is availableas a download from Maxim’s evkit-software web page. Ordering information for EV systems is located in the EVsystem data sheet. The AUDINT1 board is provided as part of selected Maximevaluation systems (EV system) to evaluate Maxim partsonly. The use of the AUDINT1 board as a development target is not supported. Refer to the MAXQ2000 evaluationkit data sheet for this purpose. 音频接口板AUDINT1优势和特点: ●● USB Powered (+5V) 声明:本网站原创内容,如需转载,请注明出处;本网站转载的内容(文章、图片、视频)等资料版权归原网站所有。如昨们接纳了您不宜公开的文章或图片,未能实时和您确认,制止给双方造成不须要的经济损失,请电邮接洽昨们,以便迅速接纳适当处理步伐;接待投稿,邮箱:editors@eccn.com。 猜你喜欢
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