APx500 audio measurement software displaying phase spectrum results of test board equipped with 16 MEMS microphones.
PDM 16 MODULE PERFORMANCE Sample Rate Range 4 kHz to 216 kHz
Clock Range 128 kHz to 24.576 MHz
Oversampling Rate 32, 64, 128, 256
Edge Modes Rising edge, odd channels Falling edge, even channels
Vdd Output 0.0 to 3.6 V, 50 mA max
Interface Logic Levels 0.8 to 3.3 V
SNR < 129 dB (20 kHz BW, unweighted)
THD+N < -130 dB (20 kHz BW, unweighted)
Dynamic Range < 137 dB (AES17, CCIR-RMS)
Flatness ¡¾0.002 dB (20 Hz to 20 kHz, 32x decimation) ¡¾0.001 dB (20 Hz to 20 kHz, 64x, 128x, 256x, 512x decimation)
Decimation Ratios Five selectable: 32x, 64x, 128x, 256x, 512x
Interchannel Phase Alignment All channels sampled synchronously from common clock, phase relationships between channels full maintained
Connector Connection to DUT is via 40-pin IDC 2.54 mm (0.1¡È) cable header (on remote pod)
Full Specifications: For full specifications on the APx PDM 16 input module, please see the Installation and Specifications Guides for any of the modular APx audio analyzers: