AD74111YRUZ-REEL7

Overview

The AD74111YRUZ-REEL7 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 supply with a 3.3 V tolerant digital interface. 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.
• Integrated software-controllable clickless mute and programmable volume control for the DAC channel.
• Flexible serial port supporting master or slave modes with configurable word lengths of 16, 20, or 24 bits.

Applications

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

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to reel packaging when sourcing components. Confirm that the Y variant meets the required automotive temperature specifications of –40°C to +105°C. Ensure compatibility with the 2.5 V analog supply and 3.3 V tolerant digital interface requirements of the host system design.

Selection Notes

Select this component for mono audio front-end applications requiring high dynamic range and low power consumption. Consider the internal reference voltage of 1.125 V and the ability to bypass it for external references if higher precision is needed. Evaluate the master clock prescaler options to ensure compatibility with available system clocks for target sample rates.

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

The AD74111YRUZ is the tube-packaged equivalent of the AD74111YRUZ-REEL7. Both share identical electrical characteristics and pinouts, differing only in shipping configuration. No functional substitutes are documented in the provided datasheet.