Overview
The AD1865R, 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 requiring any external components. The AD1865R includes two complete signal channels, providing cophased voltage or current output signals and eliminating the need for output demultiplexing circuitry.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18-bit |
| Number of DAC Channels | 2 |
| Analog Output Voltage (Max) | ±3 V |
| Analog Output Voltage (Min) | ±3 V |
| Output Current | ±1 mA |
| Power Supplies | ±5 V |
| Power Dissipation (Typical) | 225 mW |
| Power Dissipation (Maximum) | 260 mW |
| Operating Temperature Range | -25°C to +70°C |
| Package Types | 24-pin DIP, 28-pin SOIC |
Key Features
- Excellent THD+N and SNR performance without external components.
- Dual 18-bit DAC with two complete signal channels.
- Partially segmented architecture with laser-trimmed resistors for low total harmonic distortion.
- 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 signal-to-noise ratio.
- Professional audio gear, such as mixers and sound cards.
- Consumer audio devices, including CD players and digital audio players.
Q & A
- What is the resolution of the AD1865R DAC?
The AD1865R has a resolution of 18 bits.
- How many DAC channels does the AD1865R have?
The AD1865R has two DAC channels.
- What is the maximum analog output voltage of the AD1865R?
The maximum analog output voltage is ±3 V.
- What are the power supply requirements for the AD1865R?
The AD1865R operates with ±5 V power supplies.
- What is the typical power dissipation of the AD1865R?
The typical power dissipation is 225 mW.
- What are the package options for the AD1865R?
The AD1865R is available in 24-pin DIP and 28-pin SOIC packages.
- Does the AD1865R require external components for operation?
No, the AD1865R does not require any external components for operation.
- What is the operating temperature range of the AD1865R?
The operating temperature range is -25°C to +70°C.
- Is the AD1865R protected against short circuits?
Yes, the output amplifiers of the AD1865R are short-circuit protected.
- What kind of digital interface does the AD1865R use?
The AD1865R uses a versatile digital interface compatible with standard digital filter chips.
