ADAU7118ACPZRL

Overview

The ADAU7118ACPZRL is an 8-channel audio analog-to-digital converter IC manufactured by Analog Devices Inc. It converts four stereo pulse density modulation (PDM) bitstreams into a single pulse code modulation (PCM) output stream in I2S or TDM format. The device features 24-bit resolution, a 126 dB A-weighted signal-to-noise ratio, and supports output sampling rates from 4 kHz to 192 kHz. It operates with a DVDD supply of 1.10 V to 1.98 V and an IOVDD supply of 1.70 V to 3.63 V within a commercial temperature range of −40°C to +85°C. The component is housed in a 16-lead, 3 mm × 3 mm LFCSP package.

Feature Summary

• Converts eight PDM inputs to a single PCM output stream via I2S or TDM interfaces
• Supports decimation ratios of 16×, 32×, or 64× with 24-bit resolution
• Features dual output PDM clocks and automatic clock generation
• Operates in selectable I2C control or standalone hardware modes

Applications

• Microphone arrays
• Mobile computing devices
• Portable electronics
• Consumer electronics
• Professional electronics

Procurement Notes

Verify the specific ordering suffix for packaging requirements. The base part number corresponds to tape and reel or cut tape options. Confirm that the selected variant matches the required quantity per reel or cut tape specifications for the manufacturing process. Ensure compatibility with the intended supply voltage levels and interface protocols before finalizing procurement.

Selection Notes

Select this component when an 8-channel digital microphone interface is required with high dynamic range performance. The device supports up to TDM-16 formats and offers configurable slot routing. Ensure the system design accommodates the separate DVDD and IOVDD power domains and provides appropriate thermal dissipation for the exposed pad in the LFCSP-16 package.

Part Context

This component belongs to the Analog Devices ADAU7118 family of audio converters. It is designed specifically for applications requiring multiple digital microphone inputs. The device integrates digital decimation filtering and serial audio output interfaces, eliminating the need for external processing in basic audio capture scenarios.

Replacement Considerations

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