20W Stereo Digital Class-D Audio Power Amplifier
APA3175
20W Stereo Digital Class-D Audio Power Amplifier with EQ and DRC
Features
General Description
• Operating Vo...
Description
APA3175
20W Stereo Digital Class-D Audio Power Amplifier with EQ and DRC
Features
General Description
Operating Voltage: 4.5V~24V for PVDD
The APA3175 is a digital input, stereo, high efficiency,
– 3.0V~3.6V for DVDD and AVDD
High Efficiency Class-D Operation Eliminate the
Class-D audio amplifier available in a TQFP7x7-48P package.
Need of Heatsinks
The APA3175 accepts the digital serial audio data and
Digital Serial Audio Input (Stereo Output)
using the digital audio processor to convert the audio
I2C Control Interface
data becomes the stereo Class-D output speaker
Sampling Rate can Support from 32kHz to 192kHz amplifier. This provides the seamless integration between
Separated Volume Control from 24dB to Mute
the codec and the speaker amplifier.
Soft Mute (50% Duty Cycle)
The APA3175 is a slave device receiving clocks from ex-
Programmable Dynamic Range Compression
ternal source, and the Class-D’s PWM switching fre-
– Power Limiter
quency is 352.8kHz for the sampling rate 44.1kHz or 384
– Speaker Protection
kHz for sampling 48kHz, depend on the input signal’s
– Night-Mode Listening
sampling rate.
Programmable Biquads for Speaker EQ
Shutdown and Mute Function
Pin Configuration
Thermal and Over-Current Protections with Auto-
48 PGND_AB 47 PGND_AB 46 OUT_B 45 PVDD_B 44 PVDD_B 43 BBS 42 CBS 41 PVDD_C 40 PVDD_C 39 OUT_C 38 PGND_CD 37 PGND_CD
Recovery
Space Saving Package TQFP7x7-48P
Lead Free and Green Devices Available
...
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