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DA7217 Datasheet

Ultra-Low Power Stereo Codec

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DA7217
Ultra-Low Power Stereo Codec
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 Flexible digital mixing from all seven inputs to
playback path with 110 dB dynamic range
all six outputs with independent gain on each
4 mW stereo playback power consumption
mixer path
DAC digital filters with audio and voice mode
options, five-band equalizer and five
Ability to run the ADCs at a different sample
rate to the DACs on a single I2S interface
programmable biquad stages
Digital tone generator with built-in support for
Dedicated low-latency digital sideband filter
DTMF
with three programmable biquad stages
System controller for simplified, pop-free start-
High performance microphone to ADC record up and shutdown
path with 105 dB dynamic range
Phase-locked loop with sample rate tracking
2.5 mW stereo record power consumption
supporting MCLK frequencies from 2 MHz to
ADC digital filters with audio and voice mode
options
54 MHz
Automatic tuning of on-chip reference
500 µW always-on record mode with
oscillator for clock-free operation in low-power
modes
automatic level detection
Hybrid analog / digital automatic level control
4-wire digital audio interface with support for
I2S, four-channel I2S, TDM and other audio
to dynamically control the record level
formats
Shutdown mode offering current consumption 2-wire I2C compatible control interface with
during standby of 2.5 µA
support for High Speed mode up to 3.4 MHz
Two low-noise microphone bias regulators 24-bit data at up to 96 kHz sample rate
with programmable output voltage and ultra-
low power mode
The headphone amplifier can be run directly
A high efficiency two-level, true-ground charge
from the supply, thus eliminating the need for
charge pump capacitors
pump for generating class-G headphone
supplies
Voice mode filtering up to 32 kHz
Applications
Hearables
Wireless and wired headphones
Wireless and wired headsets
Datasheet
CFR0011-120-00
Revision 3.1
1 of 168
23-Feb-2017
© 2017 Dialog Semiconductor




Dialog Semiconductor

DA7217 Datasheet Preview

DA7217 Datasheet

Ultra-Low Power Stereo Codec

No Preview Available !

DA7217
Ultra-Low Power Stereo Codec
System Diagram
Microphone
Inputs
Analog
or
Digital
DA7217
Differential Stereo
Speaker/Headphone
Drivers
Control
Interface
Digital Audio
Interface
Applications
Processor
Figure 1: DA7217 with Differential Stereo Headphone Outputs
Datasheet
CFR0011-120-00
Revision 3.1
2 of 168
23-Feb-2017
© 2017 Dialog Semiconductor


Part Number DA7217
Description Ultra-Low Power Stereo Codec
Maker Dialog Semiconductor
Total Page 30 Pages
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