ALB MAX98357 Breakout - I2S Input 3W Class D Digital Power Amps
...About 1 min
Overview
The MAX98357A/MAX98357B is an easy-to-use, low-cost,digital pulse-code modulation (PCM) input Class D amplifier that provides industry-leading Class AB audio performance with Class D efficiency. The digital audio interface automatically recognizes up to 35 different PCM and TDM clocking schemes which eliminates the need for I2C programming. Operation is further simplified by eliminating the need for an external MCLK signal that is typically used for PCM communication. Simply supply power, LRCLK, BCLK, and digital audio to generate audio!
Features
- 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
Specifications
- MAX98357A - 3.2W I2S Input Audio Amplifier
- Headers for I2S, VDD, GND easy to use
- 2.0MM S2B-PH Connector for Speaker
- Dimension: 34 x 21 x 5 mm
Hardware
| Pin | Description | Note |
|---|---|---|
| VDD | Power Suppy 2.5 - 5.5V, for Example 3.3V | |
| GND | Ground | |
| LRCK | Word select clock for the digital signal that is active on the serial port's input data line. | |
| BCLK | Bit clock for the digital signal that is active on the serial data port's input data line. | |
| DIN | Data line to the serial data port. | |
| #SD | Places the speaker amplifier in shutdown mode while pulled low level. | Pull-up with 1M. |
| GAIN | Speaker Amplifier Gain | Default 12dB |
User Guide
Examples
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