DA7218-00U32

DA7218-00U32 Key Features

■ High perf ormance stereo DAC to headphoneplayback path with 110 dB dynamic range■ 4 mW stereo playback power consumption■ DAC digital filters with audio and voice modeoptions, five-band equalizer and fiveprogrammable biquad stages■ Flexible digital mixing from all seven inputs toall six outputs with independent gain on eachmixer path■ Ability to run the ADCs at a different samplerate to the DACs on a single I2S interface■ Digital tone generator with built-in support for■ Dedicated low-latency digital sideband filterwith three programmable biquad stages■ High perf ormance microphone to ADC recordpath with a 105 dB dynamic range■ 2.5 mW stereo record power consumption■ ADC digital filters with audio and voice modeoptions■ 500 µW always-on record mode withautomatic level detection■ Hybrid analog / digital automatic level controlto dynamically control the record level■ Shutdown mode offering current consumptionduring standby of 2.5 µA■ Two low-noise microphone bias regulatorswith programmable output voltage and ultra-low power mode■ Ability to differentiate between stereo andmono headsets■ Automatic detection of headset removal andconf irmation of headset insertionDTMF■ System controller for simplified, pop-free start-up and shutdown■ Phase-locked loop with sample rate trackingsupporting MCLK frequencies from 2 MHz to54 MHz■ Automatic tuning of on-chip ref erenceoscillator for clock-free operation in low-powermodes■ 4-wire digital audio interface with support forI2S, f our-channel I2S, TDM and other audiof ormats■ 2-wire I2C compatible control interface withsupport for High Speed mode up to 3.4 MHz■ 24-bit data at up to 96 kHz sample rate■ A high ef ficiency two-level, true-ground chargepump for generating class-G headphonesupplies■ Voice mode filtering up to 32 kHz

DA7218-00U32 General Description

DA7218 is a high-performance, low-power audio codec optimized for use in portable applications orwearable devices. It has single-ended headphone outputs with headphone detect for use inaccessories, 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 tosupport always-on audio detect applications.DA7218 contains two analog microphone input paths, or up to four digital microphone input paths, ora combination of both The other chip in this family, the DA7217 has differential headphone outputswithout headphone detect, and has been designed for use inside headset devices.

DA7218-00U32 Applications

■ Wired headsets■ Wired headphones■ Audio accessories■ Portable media players■ Gaming console controllers■ Tablets and eBooksDatasheetRevision 3.5July 18, 2023