特性
- 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
描述
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
产品参数
| 属性 | 值 |
|---|---|
| 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 |
封装选项
| Pkg. Type | Pkg. Dimensions (mm) | Pitch (mm) |
|---|---|---|
| 32-WLCSP | 4.56 x 1.98 | 0.55 |
应用方框图
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配备语音与显示界面的智能 HMI 系统
搭载 32 位 MCU 的智能 HMI 系统支持 GUI、语音输入/输出、IoT 连接与快速开发工具。
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其他应用
- Wired headsets
- Wired headphones
- Audio accessories
- Portable gaming controller
- Tablets and eReaders