Overview
The AD1856R-K, manufactured by Analog Devices Inc., is a monolithic, 16-bit pulse code modulation (PCM) audio digital-to-analog converter (DAC). This device is designed to provide high-performance audio playback with a voltage output amplifier, a 16-bit DAC, a 16-bit serial-to-parallel input register, and a voltage reference. The AD1856R-K combines CMOS logic elements with bipolar and MOS devices, along with thin film resistors, to achieve low total harmonic distortion and fast settling times. It is suitable for both portable and home-use applications due to its flexible power supply range of ±5 V to ±12 V.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Data Interface | Serial | |||
| Voltage Supply | ±4.75 | ±13.2 | V | |
| Operating Temperature | -25 | 70 | °C | |
| Output Voltage Range | ±3 | V | ||
| Output Current | ±8 | mA | ||
| Settling Time | 1.5 µs (6 V step) | µs | ||
| Power Dissipation | 110 | 150 | mW (±5 V supplies) | |
| Total Harmonic Distortion | 0.002% | 0.0401% | % (at 0 dB, 20 Hz to 20 kHz) | |
Key Features
- 16-bit resolution for high-quality audio conversion
- Serial data interface for easy integration with microcontrollers and other devices
- High-speed operation supporting up to 10 MHz clock rate
- Low power consumption for reduced heat generation and energy costs
- Compact 16-SOIC package for small form factor applications
- Operating temperature range of -25°C to 70°C for versatility
- Optional linearity trim pin for eliminating residual differential linearity error
- Short-circuit protected output amplifier
Applications
- Professional audio equipment, such as mixing consoles and effects processors
- Consumer electronics, such as CD players and audio amplifiers
- Industrial control systems, such as automation and measurement devices
- Medical devices, such as hearing aids and ultrasound equipment
- Automotive applications, such as infotainment systems and driver assistance systems
Q & A
- What is the resolution of the AD1856R-K DAC?
The AD1856R-K has a 16-bit resolution. - What type of data interface does the AD1856R-K use?
The AD1856R-K uses a serial data interface. - What is the operating temperature range of the AD1856R-K?
The operating temperature range is -25°C to 70°C. - What is the typical output voltage range of the AD1856R-K?
The typical output voltage range is ±3 V. - How much current can the output amplifier supply?
The output amplifier can supply up to ±8 mA. - What is the settling time for the AD1856R-K?
The settling time is 1.5 µs for a 6 V step and 1.0 µs for a 1 LSB step. - Is the AD1856R-K short-circuit protected?
Yes, the output amplifier is short-circuit protected and can withstand indefinite shorts to ground. - What is the power dissipation of the AD1856R-K with ±5 V supplies?
The power dissipation is typically 110 mW with ±5 V supplies. - What is the total harmonic distortion of the AD1856R-K?
The total harmonic distortion is typically 0.002% at 0 dB, 20 Hz to 20 kHz. - Can the AD1856R-K operate with separate analog and digital supplies?
Yes, the AD1856R-K can operate with separate analog and digital supplies to reduce digital crosstalk.
