PCMD3180QRGERQ1

ADCs/DACs - Special Purpose Overview

The PCMD3180-Q1 is an octal-channel pulse-density-modulation (PDM) input to time-division multiplexing (TDM) or I2S output converter designed for automotive applications. It supports simultaneous sampling of up to eight digital PDM microphone channels with a programmable output sample rate ranging from 8 kHz to 768 kHz. The device integrates a high-performance audio PLL, programmable digital volume control (-100 dB to 27 dB), and biquad filters. Key electrical specifications include a dynamic range of 127 dB with 5th-order PDM input and 117 dB with 4th-order input. It operates on a single supply of 1.8 V or 3.3 V and is housed in a 24-pin WQFN package.

ADCs/DACs - Special Purpose Feature Summary

• Octal-channel PDM conversion supporting up to eight simultaneous digital microphone inputs
• High dynamic range performance: 127 dB (5th-order PDM) and 117 dB (4th-order PDM)
• Programmable digital signal processing including volume control, gain/phase calibration, HPF, and biquad filters
• Flexible interface options with TDM, I2S, or left-justified formats and I2C/SPI control

ADCs/DACs - Special Purpose Applications

• Video doorbell systems
• Smart speakers
• Building security gateways
• IP network cameras
• GPS personal navigation devices
• Video conference systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix matches the required package variant. The RGE suffix denotes a 24-pin VQFN package, while RTW indicates a 24-pin WQFN package. Confirm that the Q1 suffix aligns with automotive qualification requirements for the target application environment. Ensure power supply decoupling capacitors are selected according to the recommended operating conditions for stable analog and digital regulator performance.

ADCs/DACs - Special Purpose Selection Notes

Select this component when designing space-constrained far-field microphone recording systems requiring multi-channel PDM integration. Choose between 1.8 V and 3.3 V supply configurations based on system power architecture; note that current consumption varies slightly between these voltages. Consider the available channel count and filter requirements, as the device supports up to eight channels but may have limitations on biquad filter availability depending on the active channel summing mode and sample rate.

ADCs/DACs - Special Purpose Part Context

This part belongs to the PCMD3180-Q1 family of audio converters. It serves as a bridge between digital MEMS microphones and host processors, converting parallel PDM data into serial TDM or I2S streams. The Q1 designation indicates it meets automotive reliability standards, making it suitable for harsh environments compared to standard commercial grade components.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation.