AD1861R-J-REEL7

Overview

The AD1861R-J-REEL7 is an 18-bit, 16x oversampling PCM audio digital-to-analog converter manufactured by Analog Devices. It integrates a high-performance DAC with a built-in reconstruction filter and clock generator to simplify system design. The device supports serial data interfaces compatible with standard DSP protocols. Key electrical characteristics include an 18-bit resolution for high dynamic range audio reproduction and a sampling rate capability defined by the 16x oversampling architecture. It operates within a specified industrial temperature range and utilizes a compact surface-mount package suitable for automated assembly.

Feature Summary

• 18-bit resolution with integrated reconstruction filter
• Built-in clock generator and 16x oversampling
• Serial interface compatible with DSP systems
• High signal-to-noise ratio for audio applications

Applications

• High-fidelity audio playback systems
• Professional audio equipment
• Digital audio workstations
• Multimedia consumer electronics

Procurement Notes

Verify the specific suffix 'J' indicates the industrial temperature grade and '-REEL7' denotes tape-and-reel packaging. Confirm RoHS compliance status through the official datasheet or component marking. Ensure the source document matches the exact part number to avoid confusion with the non-industrial 'AD1861' variant. Check for any product discontinuance notices from Analog Devices prior to procurement.

Selection Notes

Select this component when 18-bit audio resolution is required for critical listening applications. Compare against the AD1851 if 16-bit resolution suffices for cost reduction. Verify power supply requirements and voltage levels match the target system design. Consider the pinout compatibility if replacing older audio DACs in existing layouts.

Part Context

The AD1861 series belongs to Analog Devices' family of high-performance PCM audio DACs. The 'R' indicates a reel package, and 'J' specifies the industrial temperature range (-40°C to +85°C). This part is designed to replace discrete DAC and filter solutions in professional audio chains, offering reduced board space and improved performance through monolithic integration.

Replacement Considerations

Direct replacements may include the AD1853 or AD1862 depending on channel count and interface needs. Verify pin compatibility and register settings before substitution. The AD1851 serves as a lower-resolution alternative but lacks the 18-bit precision.