AD74111YRU-REEL7

Overview

The AD74111YRU-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 operates on a 2.5 V analog supply (AVDD) and digital core supply (DVDD2), while the digital interface supply (DVDD1) supports 2.375 V to 3.6 V, providing 3.3 V tolerance. 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 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 performance within the 20 Hz to 20 kHz bandwidth.
• Integrated on-chip reference voltage with the capability to be powered down and bypassed by an external reference source.
• Software-controllable clickless mute and programmable ADC gain with an on-chip volume control for the DAC channel.

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 temperature grade. The REEL7 suffix indicates tape and reel packaging. Ensure compatibility with the required automotive temperature range specifications if deployed in harsh environments. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match the design requirements before finalizing procurement orders.

Selection Notes

Select this component for mono audio front-end applications requiring high dynamic range and low power consumption. The device supports flexible master clock prescalers to accommodate various DSP master clock frequencies. Consider the 3.3 V tolerant digital interface when interfacing with standard logic families. Verify that the required sample rate and word length configurations align with the system's serial port capabilities and timing constraints.

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 Y suffix denotes the extended automotive temperature range specification. The RU package code identifies the 16-lead TSSOP form factor used for surface-mount assembly.

Replacement Considerations

Direct replacement part numbers are not explicitly listed in the provided documentation. Evaluate other mono audio codecs from the manufacturer with similar 24-bit resolution and 2.5 V operation. Verify pin compatibility and register map differences if substituting with related models in the same product family.