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
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.
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
Parameters
| Attributes | Value |
|---|---|
| ADC SNR A-weighted support(dB) @ 48kHz | 105 @ 1.8V |
| DAC SNR A-weighted support(dB) @ 48kHz | 110 @ 1.8V |
| Power Consumption During Record | 2.5mW @ 1.8V |
| Power Consumption During Playback | 4mW @ 1.8V |
| Headphone Power Output | 2 x 58mW @ 1.8V |
| Audio Interface | 2-wire |
| Advanced Features | 5bd EQ, 3bd Sidetone, ALC, Noise gate, Beep generator |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Pitch (mm) |
|---|---|---|
| 32-WLCSP | 4.56 x 1.98 | 0.55 |
Application Block Diagrams
 | Human Machine Interface (HMI) for Appliances Customizable HMI system for smart appliances with display, touch, voice, and NFC options. |
 | Smart HMI System with Voice & Display Interfaces Smart HMI system with 32-bit MCU supports GUI, voice I/O, IoT connectivity, and fast development tools. |
 | Off-road GPS Guidance System High-accuracy GPS/GNSS system offers precise navigation for agricultural and industrial machinery. |
 | Voice Control HMI with RISC-V ASSP Turnkey RISC-V voice HMI with multi-mic input, flexible outputs, and easy multi-language support. |
Additional Applications
- Wired headsets
- Wired headphones
- Audio accessories
- Portable gaming controller
- Tablets and eReaders
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Renesas Boards & Kits
Ultra-Low Power Stereo Codec with Single-Ended Headphone Driver Evaluation Kit
The DA7218-EVAL evaluation board is designed to allow measurement and evaluation of the DA7218 ultra-low power stereo codec with a single-ended headphone driver. The board connects to the digital IO board for USB control and digital audio input/output via the digital audio interface. All analog... Read More
Partner Boards & Kits
REGULUS RZ/V2L & RZ/G2L SMARC System on Module (SoM)
Support Communities
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DA7218 datasheet mistakes
VDDDIG is listed twice. DA7218 datasheet A.1 Codec Initialization says 5. Enable input and output paths using the Level 2 System Controller (SLC2). but SLC2 is not mentioned anywhere else in the datasheet. Maybe copied from DA7212?
Jul 21, 2023 -
DA7218 PDM-Mic to DAI no Output
Hi, I'm trying desperately to get the DA7218 configurated to output 4 PDM microphones at the I2S interface but it still is absolutely quiet. The Mic are getting Clock and are transmitting (checked with Oscilloscope), I also checked the I2S Interface with the tone generator of the codec which ...
Sep 21, 2022 -
DA7218 ALC with Analog Microphone
Developing a new microphone product using the DA7218 CODEC. The mic element is an electret condensor type with -37dBspl sensitivity. The mic element is biased in a differential configuration per description in the data sheet. There is 12dB of gain before the 7218 Mic1P and Mic1N input. The CODEC registers ...
Jan 15, 2020
Support Communities
