MAX5556ESA+

ADCs/DACs - Special Purpose Overview

The MAX5556ESA+ is a stereo audio sigma-delta digital-to-analog converter (DAC) designed for media servers, set-top boxes, and video-game hardware. It integrates digital interpolation, sigma-delta conversion, and analog output filtering within an 8-pin SO package. The device operates from a single +4.75V to +5.5V supply, delivering a typical dynamic range of +87dB and total harmonic distortion plus noise (THD+N) below -87dB. It supports sample frequencies from 2kHz to 50kHz via a 3-wire I2S-compatible interface with left-justified data formatting.

ADCs/DACs - Special Purpose Feature Summary

• Integrated stereo sigma-delta DAC with built-in digital interpolation and analog output filters
• I2S-compatible 3-wire serial interface supporting 16-bit or 24-bit left-justified data
• Clickless/popless operation with automatic mute during power-up, clock loss, or invalid conditions
• +87dB dynamic range and -87dB THD+N performance at 48ksps

ADCs/DACs - Special Purpose Applications

• Digital Video Recorders and Media Servers
• Set-Top Boxes
• Video-Game Hardware

ADCs/DACs - Special Purpose Procurement Notes

Verify the component matches the specific lead-free/RoHS-compliant designation indicated by the '+' suffix in the part number. Confirm that the application environment remains within the specified -40°C to +85°C industrial temperature range. Ensure power sequencing adheres to guidelines: apply VDD before digital inputs and disconnect digital signals prior to removing power to prevent absolute maximum rating violations.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a complete stereo audio DAC solution without external control registers is required. It is suitable for designs needing a single +5V supply and support for sample rates between 2kHz and 50kHz. Consider the internal soft-start ramp time of 20ms for system timing requirements. Verify that the host processor can provide the necessary MCLK/LRCLK ratios of 256, 384, or 512 for proper clock derivation.

ADCs/DACs - Special Purpose Part Context

The MAX5556ESA+ belongs to the Maxim Integrated low-cost stereo audio DAC family. It utilizes BiCMOS process technology and is housed in an 8-pin Small Outline (SO) package. The device is specifically engineered to simplify stereo digital-to-analog conversion by combining all necessary signal processing stages into a single integrated circuit.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

ADCs/DACs - Special Purpose FAQ

How does the MAX5556 handle pop and click suppression?

The device features control logic and mute circuitry that minimize audible pops and clicks. During power-up, outputs ramp linearly to a 2.4V quiescent level before soft-starting over 20ms. Upon clock loss or invalid conditions, outputs immediately return to the 2.4V DC quiescent voltage.

What data formats and bit depths does the MAX5556 support?

The MAX5556 accepts 16-bit or 24-bit data in two's complement format, MSB first. It supports I2S and left-justified data formats over a 3-wire serial interface.

What are the valid MCLK to LRCLK ratios for the MAX5556?

The device requires the Master Clock (MCLK) to Left/Right Clock (LRCLK) ratio to be set to 256, 384, or 512. It automatically detects this ratio during initialization.