特長
- 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 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
- A high efficiency two-level, true-ground charge pump for generating Class G headphone supplies
- Voice mode filtering up to 32kHz
説明
The 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.
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
パラメータ
| 属性 | 値 |
|---|---|
| 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 57mW @ 2.5V |
| Audio Interface | 2-wire |
| Advanced Features | 5bd EQ, 3bd Sidetone, ALC, Noise gate, Beep generator |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Pitch (mm) |
|---|---|---|
| 32-WLCSP | 4.56 x 1.98 | 0.55 |
アプリケーション・ブロック図
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エントリーレベルの音声&ビジョンAIシステム
Arm Cortex-M85 MCUを搭載したコスト効率の高いAI/MLシステムで、音声認識、画像認識、セキュアなコネクティビティを提供します。
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スマートグラス
エッジAI、セキュアOTA、ノイズキャンセリング、ワイヤレス充電を備えた、低消費電力でコストパフォーマンスの高いスマートグラス設計です。
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その他アプリケーション
- Hearables
- Wireless and wired headsets
- Wireless and wired headphones