Overview
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
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
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 3.18 MB | |
| Product Brief | PDF 1.47 MB | |
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Design & Development
Software & Tools
Boards & Kits
Evaluation
DA7218-EVAL
Active
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...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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