The I2S digital audio amplifier
board is suitable for Raspberry Pi. Accepts digital audio through the I2S
interface, converts it to an analog output signal, and amplifies it to allow
direct speaker connection. It combines an I2S D / A converter with an audio
amplifier on one board. The small stereo amplifier module is surprisingly
powerful and delivers up to 3.2W on 4Ω impedance speakers. The class D
amplifier can be operated with a voltage of 2.7 V – 5.5 V. Due to the high
efficiency of the amplifier, the module is particularly suitable for mobile and
battery-powered projects.
Features/Specs:
· Single-Supply
Operation (2.5V to 5.5V)
· 3.2W Output Power
into 4Ω at 5V
· 2.4mA Quiescent
Current
· 92% Efficiency (RL =
8Ω, POUT = 1W)
· 22.8μVRMS Output
Noise (AV = 15dB)
· Low 0.013% THD+N at
1kHz
· No MCLK Required
· Sample Rates of 8kHz
to 96kHz
· Supports Left, Right,
or (Left/2 + Right/2) Output
· Sophisticated Edge
Rate Control Enables
· Filterless Class D
Outputs
· 77dB PSRR at 1kHz
· Low RF Susceptibility
Rejects TDMA
· Noise from GSM Radios
· Extensive
Click-and-Pop Reduction Circuitry
· Robust Short-Circuit
and Thermal Protection
· Available in
Space-Saving Packages:
· 1.345mm x 1.435mm WLP
(0.4mm Pitch) and 3mm x 3mm TQFN
· Speaker
·
Raspberry Pi
·
1 x MAX98357
I2S 3W Class D Amplifier Interface Audio Decoder Module Filterless Board For
Raspberry Pi ESP32
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