特性
- Wideband digital active noise cancellation:
- Supports hybrid, feedforward and feedback topologies
- Upto 35 dB cancellation at 200 Hz
- Over 2.5 kHz suppression range
- 25 μs input-to-output latency
- Dedicated fast equalization path for higher frequency noise cancelling
- Dedicated calibration and tuning tool
- Ultra-low power consumption
- 8.5 mW stereo hybrid ANC playback
- Enhanced audio performance
- 115 dB playback dynamic range
- 40 kHz bandwidth supports Hi-Res Audio
- 4-wire digital audio interface with support for I2S, TDM and other common audio formats
- Up to 32 bits per channel
- Up to 384 kHz sample rate support
- Three stereo PDM inputs for digital microphones and low latency connection from host processors
- Integrated low-noise microphone bias
- Flexible DSP supporting mixing, gain, equalization, sidetone, and automatic gain control
- Bypassable asynchronous sample-rate converters
- Clocking
- Programmable fractional-N phase-locked loop (PLL)
- Sample rate tracking
- 2-wire I2C compatible control interface
描述
The SmartBeat™ DA7402 is a high-performance, ultra-low-power stereo hi-fi codec. Featuring Dialog’s custom digital hybrid active noise cancellation (ANC) technology, it offers stronger suppression of ambient noise over a wider range of frequencies for the best user experience in any environment.
With its integrated audio processor, the DA7402 delivers excellent audio performance including dynamic ranges for playback of 115 dB and sampling rates up to 384 kHz. It also offers 40 kHz audio bandwidth to support Hi-Res Audio. All this while consuming just 8.5 mW during stereo playback with ANC.
The DA7402 is available in a choice of compact packages to meet the needs of even the most space-constrained applications. Moreover, it is part of a family of pin-compatible codecs, making it easier for you to develop high-resolution headphones, headsets and earbuds to impress even the most demanding user. It combines industry leading audio and wideband hybrid digital ANC in a space-saving solution whose low power consumption could enable longer playback times.
产品参数
| 属性 | 值 |
|---|---|
| ADC SNR A-weighted support(dB) @ 48kHz | 95 @ 1.8V |
| DAC SNR A-weighted support(dB) @ 48kHz | 115 @ 1.8V |
| Power Consumption During Record | 3mW @ 1.8V |
| Power Consumption During Playback | 8.5mW @ 1.8V |
| Headphone Power Output | 2 x 67mW @ 1.8V |
| Audio Interface | 2-wire |
| Advanced Features | Hybrid Active Noise Cancellation, Audio Processing Unit |
封装选项
| Pkg. Type |
|---|
| 32-WLCSP |
应用
- Wireless (Bluetooth) over- and on-ear headphones
- Wired (USB-C) over- and on-ear headphones
