Datasheet > ACS32201

ACS32201

更新时间： 2022-10-08 16:54:39

品牌	Logo	应用领域
艾迪悌 - IDT		便携式
页数	文件大小	规格书
65页	1267K
描述
PORTABLE CONSUMER DEVICE

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ACS32201 数据手册

ACS32201

LOW-POWER, HIGH-FIDELITY, CLASS-D AMPLIFIER

1. OVERVIEW

1.1. Block Diagrams

The ACS32201 is an advanced digital Class-D amplifier. To support the design of audio subsystems in a portable

device, the ACS32201 features an intelligent architecture with advanced audio processing algorithms and a 1W/chan-

nel filterless stereo class D amplifier.

Clocking

DVDD_CORE

DVDD_IO

VDD_XTAL

VDD_PLL2

_PVDD4

_AVDD4

VDD_PLL3

VDD_PLL1 VDD_PLSS

Internal Audio Clock(s)

MCLK

PLL

I2C_SDA

I2C_SCL

SPKR_EN

TEST

Control

Class D Left+

Class D Left-

Digital PWM

controller

vol

BTL

Audio Processing

Bass/Treble Enhancement

SYSTEM EQ

DAC Left

DACBCLK

DACLRCLK

DACIN

SPEAKER EQ

3-D effect

Compressor-limiter

Dynamic Range Expander

Vref

DAC Right

Class D Right+

Class D Right-

Digital PWM

controller

vol

BTL

VSS_PLSS

VSS_XTAL

DVSS

AVSS

PVSS

Figure 1. ACS32201 Block Diagram

1.2. Audio Outputs

To enhance the sound available from the small, low-power speakers typically found in a portable device, the ACS32201

provides numerous audio enhancement capabilities. The ACS32201 features dual, independent, programmable

left/right 6-band equalization, allowing the system designer to provide an advanced system equalizer to accommodate

the specific speakers and enclosure design. A compressor/limiter features programmable attack and release thresh-

olds, enabling the system designer to attenuate loud noise excursions to avoid speaker artifacts, thus allowing the

underlying content to be played at a louder volume without distortion. For compressed audio, a programmable

expander is available to help restore the dynamic range of the original content. A stereo depth enhancement algorithm

allows common left/right content (e.g. dialog) to be attenuated separately from other content, providing a perceived

depth separation between background and foreground audio. Psychoacoustic bass and treble enhancement algo-

rithms achieve a rich, full tone even from originally compressed content, and even with speakers generally unable to

play low-frequency sounds.

IDT CONFIDENTIAL

V0.6 07/11

ACS32201

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