AD74111YRUZ

Overview

The AD74111YRUZ 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 (AVDD/DVDD2 range: 2.375 V to 2.625 V) with a 3.3 V tolerant digital interface (DVDD1 up to 3.6 V). 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 component is housed in a 16-lead TSSOP package and is specified for the automotive 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 programmable gain stage for the ADC and software-controllable clickless mute and volume control for the DAC.
• Flexible serial port supporting master and slave modes with configurable word lengths and frame synchronization.

Applications

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

Procurement Notes

Verify the specific ordering suffix RUZ against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the DVDD1 supply voltage does not exceed 3.6 V to maintain device integrity. Confirm that the application environment remains within the specified –40°C to +105°C operating temperature range for the Y variant.

Selection Notes

Select this component for mono audio front-end applications requiring high dynamic range and low power consumption. The integrated on-chip reference simplifies design, though an external reference can be used if required. Consider the master clock prescaler flexibility when interfacing with DSPs that have fixed clock outputs. Ensure the serial interface timing matches the host controller's capabilities for either master or slave operation.

Part Context

The AD74111YRUZ belongs to the AD74111 family of mono audio codecs designed for general-purpose audio and voice processing. It serves as a front-end processor integrating both analog-to-digital and digital-to-analog conversion channels. The Y suffix denotes the extended automotive temperature grade, distinguishing it from commercial variants while maintaining identical electrical functionality and pinout compatibility.

Replacement Considerations

Direct functional substitutes within the same family include the AD74111YR. Verify pin compatibility and thermal characteristics when replacing components. No other cross-family replacements are confirmed in public documentation.