| 类型：其他电源模块 | 品牌：ACM(至盛) | 型号：ACM8625P |
1.?灵活电源配置- PVDD： 4.5V到21V - DVDD和I/O： 3.3V?各种输出配置-2×33W，立体声模式（6Ω，21V，THD+N=1%）-1×51W，单声道模式（4Ω，21V，THD+N = 1%）?***音频性能- THD+N≤0。04%在1W，1kHz，PVDD=12 V-112 dB加权信噪比（信噪比）空闲切换加权噪声≤35- 18 mA低静止电流- 90%效率到6Ω负载在12V?可配置数字音频接口我C控制多达4可选择地址，我，左，正确，TDM音频格式-3线数字音频接口没有MCLK需要- 32kHz，44.1kHz/48kHz，88.2kHz/96kHz，176.4kHz/192kHz输入样本率- SDOUT声回声取消-AEC或1.1 / 2.1系统子通道信号路由?***的音频效果调优-灵活的数字和模拟增益调整-高通滤波器输入信号路由器左右通道-2×15前问题&2×5后智商支持增强音频频率调优-前音量和音量动态音量和响度控制-3波段动态范围控制（DRC）与时间延迟缓冲和后补偿问题灵活.
1. Features
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Flexible Power Supply Configurations
- PVDD: 4.5V to 21V
- DVDD and I/O: 3.3V
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Various output configurations
- 2×33W, Stereo mode (6Ω, 21V, THD+N = 1%)
- 1×51W, Mono mode (4Ω, 21V, THD+N = 1%)
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Excellent Audio Performance
- THD+N ≤ 0.04% at 1W, 1kHz, PVDD = 12V
- 112 dB A-weighted signal-to-noise ratio (SNR)
- Idle switching A-weighted noise ≤ 35
- 18 mA low quiescent current
- 90% efficiency into 6Ω load at 12V
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Configurable digital audio interface
- I C control with up to 4 selectable addresses
- I S, Left-justified, Right-justified, TDM audio format
- 3-Wire digital audio interface without MCLK required
- 32kHz, 44.1kHz/48kHz, 88.2kHz/96kHz,
176.4kHz/192kHz input sample rate
- SDOUT for Acoustic Echo Cancellation – AEC or 1.1 / 2.1
system sub-channel signal routing
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Advanced audio effect tuning
- Flexible digital and analog gain adjustment
- High pass filter for DC blocking
- Input signal router for left and right channel
- 2×15 pre BQs & 2×5 post BQs to support enhanced
audio frequency tuning
- Pre volume & post volume for dynamic headroom and
loudness control
- 3 band dynamic range control (DRC) with time delay
buffer & post compensation BQs for flexible and flat
multiple band control
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Analog protections
- FAULT status report through GPIO and I C registers
- Over current and Direct current protection
- Over temperature protection
- Under-voltage and Over-voltage protection
- Clock error protection
2. Applications
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Portable Speakers: Bluetooth, Smart Speakers with
Voice Assistant
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Home Audio: TV, Soundbar, STB (set top box), HTiB
(Home Theatre in a Box)
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Smart Appliances
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PCs and Laptops
3. General Description
ACM8625P is a fully integrated, high efficiency, stereo Class
D audio amplifier with digital inputs. The application circuit
requires few passives components to operate with 4.5V to
21V PVDD supply, 3.3V DVDD supply. It can drive 2×33W
output power into BTL 6Ω and 1×51W into PBTL 4Ω@1%
THD+N.
ACM8625P features one novel PWM modulation
architecture, which adjusts PWM common duty cycle during
start-up phase to avoid startup pop click.
Spread spectrum technology provides lower EMI radiated
emissions. It allows inductor free application with specified
output power situation with ACM8625P.
The advanced audio effect tuning capability inside
ACM8625P provides one highly integrated solution. It allows
turning on / off each block with highly free operations. Both
pre and pose BQs / volume helps a lot to maintain audio
headroom. Furthermore, 3 band DRC with time delay buffer
and post compensation BQs is available to implement
flexible and flat multiple band control.
