Overview
The AD1865RZ, produced by Analog Devices Inc., is a complete, dual 18-bit Digital-to-Analog Converter (DAC) designed for high-quality audio applications. This monolithic chip integrates CMOS logic, bipolar, and MOS linear elements, along with laser-trimmed thin-film resistor elements, all fabricated on Analog Devices’ ABCMOS process. The AD1865RZ offers excellent Total Harmonic Distortion plus Noise (THD+N) and Signal-to-Noise Ratio (SNR), making it ideal for various audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 18-bit | |
| Signal-to-Noise Ratio (SNR) | 110 dB | |
| Total Harmonic Distortion plus Noise (THD+N) | 0.003% | |
| Operating Temperature Range | –25°C to +70°C | |
| Voltage Supply Range | ±4.75 V to ±5.25 V | |
| Power Consumption | 225 mW (typ), 260 mW (max) | |
| Package Type | 28-pin SOIC | |
| Oversampling Rate | 16 × FS |
Key Features
- No external components required for operation.
- Cophased voltage or current output signals, eliminating the need for output demultiplexing circuitry.
- Low glitch for improved sound quality.
- Interchannel gain and midscale matching.
- Five-wire interface for individual DAC control.
- Low power consumption: 225 mW (typ), 260 mW (max).
- High channel separation: 116 dB.
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 AD1865RZ DAC?
The AD1865RZ has a resolution of 18 bits. - What is the typical THD+N of the AD1865RZ?
The typical THD+N is 0.003%. - What is the operating temperature range of the AD1865RZ?
The operating temperature range is –25°C to +70°C. - Does the AD1865RZ require external components for operation?
No, the AD1865RZ does not require any external components for operation. - What is the power consumption of the AD1865RZ?
The power consumption is typically 225 mW, with a maximum of 260 mW. - What are the common package types for the AD1865RZ?
The AD1865RZ is available in 28-pin SOIC packages. - What is the oversampling rate per channel for the AD1865RZ?
The oversampling rate per channel is 16 × FS. - What are some typical applications of the AD1865RZ?
Typical applications include multichannel audio systems, compact disc players, multivoice keyboard instruments, DAT players and recorders, digital mixing consoles, and multimedia workstations. - What is the signal-to-noise ratio (SNR) of the AD1865RZ?
The SNR is 110 dB. - How does the AD1865RZ achieve high channel separation?
The AD1865RZ achieves high channel separation of 116 dB through its integrated design and cophased output signals.
