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DA7217 Datasheet(PDF) 1 Page - Dialog Semiconductor |
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DA7217 Datasheet(HTML) 1 Page - Dialog Semiconductor |
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1 / 171 page  DA7217 Ultra-Low Power Stereo Codec Datasheet Revision 2.5 01 Sep 2016 CFR0011-120-00 1 of 171 © 2016 Dialog Semiconductor General Description DA7217 is a high-performance, low-power audio codec optimized for use in headsets or wearable devices. It has differential headphone outputs for use inside headset devices, offering excellent left to right channel separation and common mode noise rejection. DA7217 also has a stereo DAC to headphone output path and ultra-low power operating modes to support always-on audio detect applications. DA7217 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 DA7218, has single-ended headphone outputs, and has been designed with headphone detect for use in accessories. Key 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 105 dB dynamic range ■ 2.5 mW stereo record power consumption ■ ADC digital filters with audio and voice mode options ■ 500 µW 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 2.5 µA ■ Two low-noise microphone bias regulators with programmable output voltage and ultra- low power mode ■ A high efficiency two-level, true-ground charge pump for generating class-G headphone supplies ■ Voice mode filtering up to 32 kHz ■ Flexible digital mixing from all seven inputs to all six outputs with independent gain on each mixer path ■ Ability to run the ADCs at a different sample rate to the DACs on a single I 2S interface ■ Digital tone generator with built-in support for DTMF ■ System controller for simplified, pop-free start- up and shutdown ■ Phase-locked loop with sample rate tracking supporting MCLK frequencies from 2 MHz to 54 MHz ■ Automatic tuning of on-chip reference oscillator for clock-free operation in low-power modes ■ 4-wire digital audio interface with support for I 2S, four-channel I2S, TDM and other audio formats ■ 2-wire I2C compatible control interface with support for High Speed mode up to 3.4 MHz ■ 24-bit data at up to 96 kHz sample rate ■ The headphone amplifier can be run directly from the supply, thus eliminating the need for charge pump capacitors Applications ■ Hearables ■ Wireless and wired headphones ■ Wireless and wired headsets |
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