The AD1865 is a complete, dual 18-bit digital-to-analog converter (DAC) offering excellent THD+N and SNR performance while requiring no external components. It includes two complete signal channels, providing cophased voltage or current output signals and eliminating the need for output components.
The AD1865 is a monolithic dual‑channel 18‑bit DAC that provides cophased voltage or current outputs without the need for external components. It uses a partially segmented architecture with laser‑trimmed resistors for low distortion and high channel separation.
The device operates from ±5 V supplies, dissipates only 225 mW typical power, and includes built‑in output amplifiers, reference circuits and digital interfaces. It is offered in 24‑pin DIP and 28‑pin SOIC packages and is suited for multichannel audio, CD players, digital keyboards and other high‑performance audio applications.
| Resolution | 18 Bits |
|---|---|
| Signal‑to‑Noise Ratio | 110 dB |
| Total Harmonic Distortion + Noise | 0.003 % |
| Typical Power Dissipation | 225 mW |
| Maximum Power Dissipation | 260 mW |
| Load Current | –8 mA |
| Output Impedance | 0.1 Ω |
| Channel Separation | 116 dB |
The AD1865 typically dissipates 225 mW of power.
No external components are required for operation.
The AD1865 provides a signal‑to‑noise ratio of 110 dB.
The total harmonic distortion plus noise is typically 0.003 %.