CXAS42230是一个数字音频放大器，能够驱动25W（BTL）的每对8负载扬声器和50W（PBTL）的4负载扬声器，在24伏电源下工作，无需外部散热器或风扇，即可播放音乐。CXAS42230提供高级音频处理功能，如音量控制、30个EQ频段、音频混音、3D环绕声和动态范围控制（DRC）。通过一个简单的I2 C控制接口，这些都是完全可编程的。提供了可靠的保护电路，以保护CXAS42230免受意外错误操作条件造成的损坏。CXAS42230的全数字电路设计比模拟电路设计实现的模拟AB类或D类音频放大器更能容忍噪声和PVT（过程电压和温度）变化。CXAS42230在瞬时通电/断电或静音/关机切换期间不会弹出，因为它具有强大的内置防弹出电路
声音处理包括
30波段参数扬声器均衡器
音量控制（+24dB~-103dB，0.125dB/步）
动态范围控制
三频加后动态范围控制
功率限制
可编程的3D环绕声
通道混合
带滞后窗的噪声门
低音/高音控制
直流阻塞高通滤波器
标前/标后
防爆裂设计
液位计和功率计
带可选音频数字信号处理器点的I2S输出
短路和过热保护
支持无时钟I2C控制
带可选设备地址的I2 C控制接口
支持硬件和软件重置
内部锁相环
低压欠压停机及高压欠压检测
过电压保护
节电模式
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[ CXAS42230 ]
目录
7.相关产品
产品概述 返回TOP
CXAS42230 is a digital audio amplifier capable of driving 25W (BTL) each to a pair of 8 load speaker and 50W (PBTL) to a 4 load speaker operating at 24V supply without external heat-sink or fan requirement with play music. CXAS42230 provides advanced audio processing functions, such as volume control, 30 EQ bands, audio mixing, 3D surround sound and Dynamic Range Control (DRC). These are fully programmable via a simple I2 C control interface. Robust protection circuits are provided to protect CXAS42230 from damage due to accidental erroneous operating condition. The full digital circuit design of CXAS42230 is more tolerant to noise and PVT (Process Voltage, and Temperature) variation than the analog class-AB or class-D audio amplifier counterpart implemented by analog circuit design. CXAS42230 is pop free during instantaneous power on/off or mute/shut down switching because of its robust built-in anti-pop circuit
产品特点 返回TOP
16/18/20/24-bits input with I2 S, Left-alignment and Right-alignment data format
PSNR & DR(A-weighting) Loudspeaker: 108dB (PSNR), 108dB (DR)@24V Multiple sampling frequencies (Fs)
8kHz and 32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz and
128kHz / 176.4kHz / 192kHz
System clock = 64x, 128x, 192x, 256x, 384x, 512x, 576x, 768x, 1024x Fs MCLK system:
256x~4096x Fs for 8kHz
64x~1024x Fs for 32kHz / 44.1kHz / 48kHz
64x~512x Fs for 64kHz / 88.2kHz / 96kHz
64x~256x Fs for 128kHz / 176.4kHz / 192kHz
BCLK system:
64xFs for 32kHz / 44.1kHz / 48kHz
64xFs for 64kHz / 88.2kHz / 96kHz
64xFs for 128kHz / 176.4kHz / 192kHz
Supply voltage
3.3V for digital circuit
4.5V~26V for loudspeaker driver
Supports 2.0CH/Mono configuration
Loudspeaker output power@12V for stereo
7W x 2CH into 8<1% THD+N
10W x 2CH into 4<1% THD+N
Loudspeaker output power@18V for stereo
15W x 2CH into 8<1% THD+N
Loudspeaker output power@24V for stereo
25W x 2CH into 8<1% THD+N
Sound processing including
30 bands parametric speaker EQ
Volume control (+24dB~-103dB, 0.125dB/step)
Dynamic range control
Three Band plus post Dynamic range control
Power Clipping
Programmed 3D surround sound
Channel mixing
Noise gate with hysteresis window
Bass/Treble tone control
DC-blocking high-pass filter
Pre-scale/post-scale
Anti-pop design
Level meter and power meter
I2S output with selectable Audio DSP point
Short circuit and over-temperature protection
Supports I2 C control without clock
I2 C control interface with selectable device address
Support hardware and software reset
Internal PLL
LV Under-voltage shutdown and HV Under-voltage detection
Over voltage protection
Power saving mode
应用范围 返回TOP
TV audio
Boom-box, CD and DVD receiver, docking system
Powered speaker
Wireless audio
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产品封装图 返回TOP
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数字功放（内置DSP） |
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产品型号 |
简介 |
工作电压 |
封装 |
备注 |
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支持2.0 1.0 1*50W、2x25W立体声 30段EQ 3段DRC |
4.5-26V 3.3V |
ETSSOP-24 |
2x25W(8Ω)/50W(4Ω) I2S数字功放30EQ DRC/ TBDRC with post DRC，3D 环绕音效，内置锁相环，I2S output |
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支持2.0 1.0 1*50W、2x25W立体声 30段EQ 3段DRC |
4.5-26V 3.3V |
ELQFP-48 7x7 mm |
2x25W(8Ω)/50W(4Ω) I2S数字功放，30 EQ，DRC/ TBDRC with post DRC，3D 环绕音效，内置锁相环，I2S output DRC，DRC， |
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