Overview
The AD1865N, produced by Analog Devices Inc., is a complete dual 18-bit Digital-to-Analog Converter (DAC) designed for high-performance audio applications. This device offers excellent Total Harmonic Distortion plus Noise (THD+N) and Signal-to-Noise Ratio (SNR) without the need for external components. It includes two complete signal channels, providing cophased voltage or current output signals and eliminating the need for output demultiplexing circuitry. The AD1865N is fabricated using Analog Devices' ABCMOS process, incorporating CMOS logic, bipolar and MOS linear elements, and laser-trimmed thin-film resistor elements.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Number of Channels | Dual |
| Output Type | Voltage or Current |
| THD+N | Excellent |
| SNR | Excellent |
| Output Current | ±1 mA |
| Output Voltage | ±3 V at load currents up to 8 mA |
| Power Supplies | ±5 V |
| Power Dissipation | Typically 225 mW, maximum 260 mW |
| Operating Temperature | -25°C to +70°C |
| Package Types | 24-pin plastic DIP, 28-pin SOIC |
Key Features
- No external components required for operation.
- Partially segmented architecture with laser-trimmed resistors for low THD+N and SNR.
- High performance output amplifiers with fast settling and high slew rate.
- Short-circuit protected output amplifiers.
- High channel separation and matched gain and linearity between channels.
- Versatile digital interface compatible with standard digital filter chips.
- Separate analog and digital ground pins and power supplies for reduced digital feedthrough.
Applications
- High-performance audio systems.
- Stereo and multi-DAC per channel applications.
- Audio equipment requiring low distortion and high SNR.
- Professional audio gear such as mixers, amplifiers, and digital audio workstations.
Q & A
- What is the resolution of the AD1865N DAC?
The AD1865N has a resolution of 18 bits.
- How many channels does the AD1865N support?
The AD1865N supports dual channels.
- What are the typical power supplies required for the AD1865N?
The AD1865N operates with ±5 V power supplies.
- What is the typical power dissipation of the AD1865N?
The typical power dissipation is 225 mW, with a maximum of 260 mW.
- What are the operating temperature ranges for the AD1865N?
The operating temperature range is -25°C to +70°C.
- What types of packages are available for the AD1865N?
The AD1865N is available in 24-pin plastic DIP and 28-pin SOIC packages.
- Does the AD1865N require external components for operation?
No, the AD1865N does not require external components for operation.
- What is the architecture of the DACs in the AD1865N?
The DACs employ a partially segmented architecture with laser-trimmed resistors.
- What is the output current capability of the AD1865N?
The AD1865N provides ±1 mA output current.
- Are the output amplifiers of the AD1865N short-circuit protected?
