AD74111YRUZ-REEL

Overview

The AD74111YRUZ-REEL is a low-cost, low-power mono audio codec manufactured by Analog Devices Inc. It features a multibit sigma-delta ADC and DAC channel with 24-bit resolution. The device supports sample rates from 8 kHz to 48 kHz and operates on a 2.5 V analog supply (AVDD) and digital core supply (DVDD2), while the digital interface supply (DVDD1) ranges from 2.375 V to 3.6 V, providing 3.3 V tolerance. Key performance metrics include an ADC dynamic range of 85 dB and a DAC dynamic range of 93 dB at 48 kHz. Total Harmonic Distortion plus Noise (THD+N) is specified as -67 dB for the ADC and -88 dB for the DAC. The component is housed in a 16-lead TSSOP package and is rated for an operating temperature range of –40°C to +105°C.

Feature Summary

• Multibit sigma-delta modulators with perfect differential linearity restoration to reduce idle tones and noise floor.
• Data directed scrambling DAC architecture that minimizes sensitivity to jitter within the 20 Hz to 20 kHz bandwidth.
• Programmable ADC gain stage and software-controllable clickless mute functionality for the DAC channel.
• Integrated master clock prescaler allowing flexible sample rate selection from common DSP master clocks.

Applications

• Digital video camcorders (DVC)
• Portable audio devices such as personal media players
• Telematic systems
• Voice processing and speech recognition applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging type and temperature grade. The REEL suffix indicates tape and reel packaging configuration. Ensure compatibility with automotive temperature specifications if deploying in high-thermal environments. Cross-reference the datasheet revision to validate pinout and electrical characteristics prior to integration.

Selection Notes

Select this component for mono audio front-end applications requiring low power consumption and high dynamic range. Verify that the system master clock frequency aligns with the internal prescaler capabilities to achieve the desired sample rate. Confirm that the digital interface voltage levels match the DVDD1 supply requirements for proper communication with the host processor or DSP controller.

Part Context

The AD74111 belongs to the Analog Devices AD74111 series of mono audio codecs. It serves as a front-end processor designed for general-purpose audio and voice applications. The device integrates both analog-to-digital and digital-to-analog conversion channels within a single compact package, simplifying system design for portable and telematic electronics.

Replacement Considerations

Consult official Analog Devices documentation for confirmed substitute part numbers. Verify functional equivalence regarding pinout, supply voltages, and serial interface timing before substitution.