MAX98357 I2S Class D 오디오 앰프 모듈
(MAX98357 I2S Amplifier Module)
개요
- 본 제품은 MAX98357 I2S Class D 오디오 앰프 모듈입니다.
- ESP32와 같이 I2S 오디오 출력을 가지고 있는 마이크로컨트롤러와 사용하기 좋은 제품입니다.
- 3.3V-5V 전원으로 동작하며, 2.5W 출력(4오옴 스피커, 5V동작시)을 가집니다.
- SD 포트의 저항을 변경하여 서로 다른 모드(off, left channel, right channel, and mixed)를 설정할 수 있습니다.
- PH 2.0 커넥터를 장착하고 있습니다.
특징
- MAX98357 I2S digital Class D amplifier, power >2.5W
- 3.3V~5V voltage power supply
- Switchable sound channel
- Adjustable gain
- Stamp holes design, support SMT and DIP
- Two ways to connect a speaker: PH2.0 and stamp holes
-
SPECIFICATION
- Module Parameters
- MCU: MAX98357A
- Operating Voltage: DC 3.3V~5V
- Output Power: 8Ω 1.8W / 4Ω 2.5W (at 12db)
- Output Channel: single channel
- Communication Interface: I2S interface
- Operating Temperature: -40℃ - +80℃
- Storage Temperature: -40℃ - +80℃
- Dimension (Without Packaging): 18mm × 18mm/ 0.059 × 0.059
- Chip Audio-relevant Parameters
(VDD = 5V, VGND = 0V, GAIN_SLOT = VDD. BCLK = 3.072MHz, LRCLK = 48kHz, speaker loads (ZSPK) connected between OUTP and OUTN, ZSPK = J, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2) - Sample Rate: 8kHz~96kHz
- THD:
0.02% (f = 1kHz, POUT = 1W, TA = +25NC, ZSPK = 4I + 33FH, TQFN)
0.013% (f = 1kHz, POUT = 0.5W, TA = +25NC, ZSPK = 8I + 68FH) - Dynamic Range: 105DB (A-weighted, VRMS = 2.54V, 24- or 32-bit data)
- Output Noise: 25FVRMS (A-weighted, 24- or 32-bit data (Note 4))
- Gain (relative to the reference level of 2.1dBV):
GAIN_SLOT = GND through 100kΩ: Min 14.4dB, Typical 15dB, Max 15.6dB
GAIN_SLOT = GND: Min 11.4dB, Typical 12dB, Max 12.6dB
GAIN_SLOT = unconnected: Min 8.4dB, Typical 9dB, Max 9.6dB
GAIN_SLOT = VDD: Min 5.4dB, Typical 6dB, Max 6.6dB
GAIN_SLOT = VDD through 100kΩ: Min 2.4dB, Typical 3dB, Max 3.6dB - Efficiency: 92% (ZSPK = 8I + 68FH, THD+N = 10%, f = 1kHz, gain = 12dB)
- DAC Gain Error: 1%
- Frequency Response: ±0.2dB
- Class D Switching Frequency: 330kHz
- Spread Spectrum Bandwidth: ±12.5kHz