AD1864N

Overview

The AD1864N is a complete dual 18-bit audio digital-to-analog converter (DAC) manufactured by Analog Devices. It features dual serial inputs and voltage outputs, requiring no external components for operation. The device operates with supply voltages ranging from ±5 V to ±12 V and supports 8x oversampling per channel. Key performance metrics include a total harmonic distortion plus noise (THD+N) of 0.0017%, 115 dB channel separation, and ±0.3% interchannel gain matching. The monolithic chip integrates CMOS logic, bipolar, and MOS linear elements on a BiMOS II process.

Feature Summary

• Dual serial input, voltage output DACs with no external components required
• Operates at 8x oversampling per channel with ±5 V to ±12 V supply range
• Cophased outputs with 115 dB channel separation and ±0.3% interchannel gain matching
• Low distortion: 0.0017% THD+N

Applications

• Multichannel audio applications
• Compact disc players
• Multivoice keyboard instruments
• DAT players and recorders
• Digital mixing consoles

Part Context

The AD1864N belongs to the AD1864 series of complete dual 18-bit audio DACs. It is pin-compatible with DIP packaging variants such as the AD1864 DIP. The component is fabricated using Analog Devices' BiMOS II process, combining CMOS logic elements with bipolar and MOS linear elements and laser-trimmed thin-film resistors.