Features
⚫ 多通道高性能 ADC:
2 通道模拟麦克风或线路输入
2 通道数字 PDM 麦克风
⚫ ADC 线路和麦克风差分输入
性能
101 dB 信噪比(DRE 禁用)
101 dB 动态范围(DRE 禁用)
115 dB 动态范围(DRE 启用)
-94 dB 总谐波失真加噪声比 (THD+N)
⚫ ADC 通道求和混合器模式,动态范围性能
104 dB(DRE 禁用),2 通道求和
117 dB(DRE 启用),2 通道求和
⚫ ADC 输入电压
差分,2 VRMS 满量程输入
单端,1 VRMS 满量程输入
⚫ 可编程通道设置:
通道增益:-6 dB 至 36 dB,步长 1 dB
数字音量控制:-96 dB 至 30 dB,步长 0.094 dB
相位校准,分辨率 163 ns
⚫ 低延迟信号处理滤波器选择
ADC 线性相位数据通路群延迟 245 μs (@fs=48 kHz)
ADC 低延迟数据通路群延迟 123 μs (@fs=48 kHz)
⚫ 可编程高通滤波器 (HPF)
⚫ 自动增益控制器 (AGC)
⚫ I2C 总线控制接口
⚫ 集成高性能音频锁相环 (PLL)
⚫ I2S/TDM 接口
I2S、左对齐和右对齐格式
支持非标准 I2S
支持 1/2/4/6/8/16 时隙 TDM
支持 8 kHz 至 768 kHz 采样率
数据位宽:16、20、24、32 位
主模式或从模式接口
⚫ 电源
VDDA: 3.3 V 或 1.8 V
VDDIO: 3.3 V 或 1.8 V
⚫ WBQFN 3X3-20L 封装(高度 0.55 mm)
Description
The AW89202 is a high performance, low latency stereo channel audio analog-to-digital converter (ADC) for microphone array application.
The device supports line and microphone inputs. The device integrates two PGAs for stereo differential inputs, AINLP & AINLN, AINRP & AINRN. The device supports simultaneous sampling of up to two analog channels or two digital channels for the pulse density modulation (PDM) microphone input.
The device integrates programable channel gain, digital volume control, a phase-locked loop, a programmable high-pass filter (HPF), low-latency filter mode, sum-mixer mode and allows for sample rates up to 768 kHz.
The device supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with the I2C interface.
The device is very suitable for music and voice application, such as Microphone Array, Far field voice capture, Smart speaker, Conference system, Sound bar, Audio Interface, etc.
AW89202 is available in a WBQFN 3X3-20L (Height 0.55) Package.