AD74111YRU-REEL

Overview

The AD74111YRU-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 operates on a 2.5 V supply with a 3.3 V tolerant digital interface. It supports sample rates from 8 kHz to 48 kHz and word lengths of 16, 20, or 24 bits. Key performance metrics include an ADC dynamic range of 85 dB and a DAC dynamic range of 93 dB at 48 kHz. The ADC provides >67 dB THD+N, while the DAC offers >88 dB THD+N. It includes programmable ADC gain, on-chip volume control, and software-controllable mute. The component is housed in a 16-lead TSSOP package and is specified 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 audio band.
• Integrated master clock prescaler allowing flexible sample rate selection from DSP master clocks using 256x, 512x, or 768x ratios.
• On-chip reference voltage that can be powered down and bypassed by an external reference source if required.

Applications

• Digital video camcorders (DVC)
• Portable audio devices such as personal media players and PDAs
• 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 tape/reel specifications. Ensure the automotive grade variant matches the required temperature range for your application. Cross-reference the datasheet revision to confirm pinout compatibility and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component for mono audio front-end applications requiring high dynamic range in a compact package. Consider the 3.3 V tolerant digital interface when interfacing with standard DSPs or microcontrollers. Evaluate the internal reference stability versus external reference requirements based on system cost and performance needs. Verify power supply decoupling requirements for AVDD, DVDD1, and DVDD2 to maintain signal integrity.

Part Context

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

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for current alternative recommendations within the same product family or functional category.