Overview
The AD1865N-K is a complete, dual 18-bit Digital-to-Analog Converter (DAC) designed and manufactured by Analog Devices Inc. This monolithic chip integrates CMOS logic elements, bipolar and MOS linear elements, and laser-trimmed thin-film resistor elements, all fabricated on Analog Devices' ABCMOS process. The AD1865N-K is renowned for its excellent Total Harmonic Distortion plus Noise (THD+N) and Signal-to-Noise Ratio (SNR), requiring no external components for operation. It provides two complete signal channels, resulting in cophased voltage or current output signals and eliminating the need for output demultiplexing circuitry.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 18 bits | |||
| Signal-to-Noise Ratio (SNR) | 107 | 110 | dB | |
| Total Harmonic Distortion plus Noise (THD+N) | 0.003% | % | ||
| Channel Separation | 110 | 116 | dB | |
| Output Voltage Range | ±2.94 | ±3.0 | ±3.06 | V |
| Output Current Range | ±1 mA | mA | ||
| Power Supply | ±4.75 V | ±5.0 V | ±5.25 V | V |
| Power Dissipation | 225 mW | 260 mW | mW | |
| Operating Temperature | -25°C | +70°C | °C | |
| Package Type | 24-pin DIP, 28-pin SOIC | |||
Key Features
- No external components required for operation.
- Cophased voltage or current output signals.
- High signal-to-noise ratio (SNR) of up to 110 dB.
- Low total harmonic distortion plus noise (THD+N) of typically 0.003%.
- Interchannel gain and midscale matching.
- Low glitch for improved sound quality.
- High performance output amplifiers with fast settling and high slew rate.
- Short-circuit protected output amplifiers.
- Five-wire digital interface for individual DAC control.
- Separate analog and digital ground pins for reduced digital feedthrough.
Applications
- Multichannel audio applications.
- Compact Disc players.
- Multivoice keyboard instruments.
- DAT players and recorders.
- Digital mixing consoles.
- Multimedia workstations.
Q & A
- What is the resolution of the AD1865N-K DAC?
The AD1865N-K has a resolution of 18 bits.
- What is the typical THD+N of the AD1865N-K?
The typical THD+N of the AD1865N-K is 0.003%.
- Does the AD1865N-K require external components for operation?
No, the AD1865N-K does not require any external components for operation.
- What is the channel separation of the AD1865N-K?
The channel separation of the AD1865N-K is up to 116 dB.
- What are the output voltage and current ranges of the AD1865N-K?
The output voltage range is ±2.94 to ±3.06 V, and the output current range is ±1 mA.
- What is the power supply range for the AD1865N-K?
The power supply range is ±4.75 V to ±5.25 V.
- What is the typical power dissipation of the AD1865N-K?
The typical power dissipation is 225 mW, with a maximum of 260 mW.
- What are the available package types for the AD1865N-K?
The AD1865N-K is available in 24-pin DIP and 28-pin SOIC packages.
- What is the operating temperature range of the AD1865N-K?
The operating temperature range is -25°C to +70°C.
- Is the AD1865N-K suitable for stereo and multi-DAC per channel applications?
