A5-PDM option
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- Commodity name: A5-PDM option
- Commodity ID: A5-PDM
Pulse-density modulation (PDM) is a 1-bit, high clock frequency data stream used in MEMS digital microphones, which is widely used in smart phone design. The audio analyzer equipped with A5-PDM module can be directly connected to any device with PDM input or output to achieve comprehensive audio testing required by the highly mobile telecommunications industry.
Pulse-density modulation (PDM) is a 1-bit, high clock frequency data stream used in MEMS digital microphones, which is widely used in smart phone design. The audio analyzer equipped with A5-PDM module can be directly connected to any device with PDM input or output to achieve comprehensive audio testing required by the highly mobile telecommunications industry.
Key words:- ax-pdm
- khz
- 调制器
- 输出
- 采样率
- 时钟
- 256x
- 输入
- 20
- 范围
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• Sample rate range: 4kHz -216kHz
• Bit clock range: 128kHz-24.576MHz
• Interpolation ratios: 16 ratios from x800 to x33
• Modulator: 4th or 5th order
• Interface logic level: 0.8–3.3V
• Edge mode: rising edge/channel 1; Falling edge/channel 1; Stereo (rising and falling edges)/Channel 2
• DC output: 0.0–3.6V, 15mA max
• Modulator maximum input level: –0dBFS
• SNR: 127dB (1kHz, 20kHzBW, unweighted, x256 oversampling rate, <>th order modulator)
THD+N: -128dB (1kHz, -9.3dBFS, 20kHzBW, unweighted, x256 oversampling rate, <>th order modulator)
• Dynamic Range: 137dB (AES17, CCIR-RMS, x256 Oversampling Rate, <>th Order Modulator)
• Smoothness: 0.001dB (20Hz-20kHz)
• Interface: output data, output clock, input data, input clock, external power supply (all via BNC)
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