DA7218数据手册开发板套件编程器的评估演示板及套件规格书PDF

描述 Description

The DA7218 is a high-performance, low power audio codec optimized for use in portable applications or wearable devices. It has single-ended headphone outputs with headphone detect for use in accessories, offering excellent left to right channel separation and common mode noise rejection.

DA7218 also has a stereo DAC to headphone output path and ultra-low power operating modes to support always-on audio detect applications. It contains two analog microphone input paths, or up to four digital microphone input paths, or a combination of both. The other chip in this family, the DA7217 has differential headphone outputs without headphone detect, and has been designed for use inside headset devices.

BenefitsSuperior hi-fidelity audio performance for immersive record and playbackSub 500µW always-on power extends battery life for audio activity detectionFlexible programming filtering (sideband, voice) enhances voice and audio playbackMixed sample rate support for wideband applicationsSupports the latest generation of low power analog and digital microphonesSmall package footprint with an optimized ballout conducive to low cost PCB manufacturing

特性 Features

• High-performance stereo DAC to headphone playback path with 110dB dynamic range
• 4mW stereo playback power consumption
• DAC digital filters with audio and voice mode options, five-band equalizer and five programmable biquad stages
• Dedicated low-latency digital sideband filter with three programmable biquad stages
• High-performance microphone to ADC record path with a 105dB dynamic range
• 2.5mW stereo record power consumption
• ADC digital filters with audio and voice mode options
• 500µW always-on record mode with automatic level detection
• Hybrid analog/digital automatic level control to dynamically control the record level
• Shutdown mode offering current consumption during standby of 2.5µA
• Two low noise microphone bias regulators with programmable output voltage and ultra-low power mode
• Ability to differentiate between stereo and mono headsets
• Automatic detection of headset removal and confirmation of headset insertion

应用 Application

• 家用电器的人机界面 (HMI) 解决方案
• 配备高端 32 位 MCU 的 HMI 解决方案板卡