Overview
The AD1861R-J is a monolithic 18-bit Pulse Code Modulation (PCM) audio Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device is part of the AD1851/AD1861 family, which is designed to provide high-performance audio playback. The AD1861R-J integrates a voltage output amplifier, a DAC, a serial-to-parallel register, and a voltage reference, making it a complete solution for various audio applications without the need for additional external components.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | - | - | 18 Bits | - |
| Total Harmonic Distortion + Noise (0 dB, 990.5 Hz) | 0.003% | 0.004% | - | % |
| Signal-to-Noise Ratio | 107 dB | 110 dB | - | dB |
| Maximum Clock Input Frequency | - | - | 13.5 MHz | - |
| Differential Linearity Error | ±0.001% | - | - | % of FSR |
| Monotonicity | - | - | 15 Bits | - |
| Power Supply Voltage (+VL and +VS) | 4.75 V | 5.25 V | - | V |
| Power Supply Current (+I) | 10.0 mA | 13.0 mA | - | mA |
| Power Dissipation | - | - | 100 mW | - |
| Operating Temperature Range | 0°C | - | 70°C | °C |
Key Features
- High-Performance Audio Playback: The AD1861R-J is designed with a combination of bipolar and MOS devices, along with thin-film resistors, to achieve high performance audio playback.
- Integrated Components: Includes a voltage output amplifier, a DAC, a serial-to-parallel register, and a voltage reference, eliminating the need for external components.
- Low Distortion: Laser-trimming of the resistors in the R-2R ladder structure reduces linearity error, resulting in low output distortion.
- Fast Switching Speeds and Low Power Consumption: The CMOS logic gates in the input register and serial-to-parallel converter enable fast switching speeds and low power consumption.
- Optional Trim for Super-Linear Performance: Allows for enhanced performance through optional trimming.
- Pin-Compatible Packages: Available in 16-pin plastic DIP and SOIC packages, pin-compatible with AD1856 and AD1860 audio DACs.
Applications
- High-End Compact Disc Players: Ideal for high-quality audio playback in compact disc players.
- Digital Audio Amplifiers: Used in digital audio amplifiers for superior sound quality.
- DAT Recorders and Players: Suitable for digital audio tape recorders and players.
- Synthesizers and Keyboards: Employed in musical instruments for high-fidelity audio output.
Q & A
- What is the resolution of the AD1861R-J DAC?
The AD1861R-J has an 18-bit resolution.
- What is the maximum clock input frequency for the AD1861R-J?
The maximum clock input frequency is 13.5 MHz.
- What is the signal-to-noise ratio of the AD1861R-J?
The signal-to-noise ratio is between 107 dB and 110 dB.
- What type of packages is the AD1861R-J available in?
The AD1861R-J is available in 16-pin plastic DIP and SOIC packages.
- Does the AD1861R-J require external components for operation?
No, the AD1861R-J is a complete monolithic solution and does not require additional external components for operation.
- What is the power dissipation of the AD1861R-J?
The power dissipation is 100 mW.
- What is the operating temperature range for the AD1861R-J?
The operating temperature range is from 0°C to 70°C.
- How does the AD1861R-J achieve low distortion?
The AD1861R-J achieves low distortion through laser-trimming of the resistors in the R-2R ladder structure.
- What are some common applications of the AD1861R-J?
Common applications include high-end compact disc players, digital audio amplifiers, DAT recorders and players, and synthesizers and keyboards.
- What type of logic is used in the digital portion of the AD1861R-J?
The digital portion is fabricated with CMOS logic elements.
