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DA7218

Ultra low power stereo codec with single ended headphone driver

da7218_block_diagram.jpg

High-performance, low-power audio codec

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.

Lifecycle status

● Active

Features

High performance stereo DAC to headphone playback path with 110 dB dynamic range

4 mW 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 105 dB dynamic range

2.5 mW 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 ultralow power mode

Ability to differentiate between stereo and mono headsets

Automatic detection of headset removal and confirmation of headset insertion

Benefits

Superior hi-fidelity audio performance for immersive record and playback

Sub 500µW always-on power extends battery life for audio activity detection

Flexible programming filtering (sideband, voice) enhances voice and audio playback

Mixed sample rate support for wideband applications

Supports the latest generation of low power analog and digital microphones

Small package footprint with an optimized ballout conducive to low cost PCB manufacturing

Applications

Wired headsets

Wired headphones

Audio accessories

Portable gaming controller

Tablets and eReaders

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Product Briefs and Summaries
Name Date Version
DA7218 Product Brief (1.47 MB)
Datasheets
Name Date Version
DA7218 Datasheet (2.29 MB)
Software Resources
Name Date Version
DA7218 SmartCanvas GUI Software (61.57 MB) (Registered users only) 16/07/2020 1.1.1.12