Overview
The AD1856R-REEL, produced 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 minimal distortion. It features a voltage output amplifier, a 16-bit DAC, a 16-bit serial-to-parallel input register, and a voltage reference. The combination of CMOS logic elements, bipolar and MOS devices, and thin film resistors ensures high audio quality. The AD1856R-REEL is suitable for both portable and home-use audio applications due to its ability to operate with a wide range of power supplies (±5 V to ±12 V).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | - | - | 16 bits |
| Power Supply Voltage (+VL and +VS) | 4.75 | 5 | 13.2 | V |
| Power Supply Voltage (−VL and −VS) | −13.2 | −5 | −4.75 | V |
| Current (+I) at +VL and +VS = 5 V, 10 MHz clock | 10 | - | 15.1 | mA |
| Current (−I) at −VL and −VS = −5 V, 10 MHz clock | −12 | - | −15.1 | mA |
| Power Dissipation at ±VS and ±VL = ±5 V | 110 | - | 150 | mW |
| Output Voltage Range | - | - | ±3 V | V |
| Output Current | - | - | ±8 mA | mA |
| Output Impedance | - | - | 1.7 kΩ | kΩ |
| Temperature Range (Operational) | 0 | - | 70 | °C |
| Temperature Range (Storage) | −25 | - | 70 | °C |
Key Features
- High Performance Audio: The AD1856R-REEL achieves high performance audio playback with extremely low total harmonic distortion (THD) due to laser trimming of the linearity error and the use of thin film resistors.
- Flexible Power Supply: The device can operate with power supplies ranging from ±5 V to ±12 V, making it suitable for both portable and home-use applications.
- Separate Analog and Digital Supplies: The digital supplies (+VL and −VL) can be separated from the analog supplies (+VS and −VS) to reduce digital crosstalk.
- Short-Circuit Protection: The output amplifier is short-circuit protected and can withstand indefinite shorts to ground.
- High Slew Rate and Fast Settling: The output amplifier achieves high slew rates and fast settling times, contributing to the overall high level of performance.
- Serial Input Interface: The serial input interface supports a 10 MHz clock rate and is compatible with popular digital filter chips used in consumer audio products).
Applications
- Consumer Audio Products: Suitable for use in compact disc players, DAT players and recorders, digital mixing consoles, and multimedia workstations.
- Portable Audio Devices: Due to its flexible power supply range, it is ideal for portable audio devices).
- Home Audio Systems: Can be used in home audio systems requiring high-quality audio playback).
- Professional Audio Equipment: Applicable in professional audio equipment such as multichannel audio systems and digital keyboards).
Q & A
- What is the resolution of the AD1856R-REEL?
The AD1856R-REEL has a resolution of 16 bits.
- What is the operating power supply voltage range for the AD1856R-REEL?
The device operates with power supplies ranging from ±5 V to ±12 V.
- Can the digital and analog supplies be separated in the AD1856R-REEL?
Yes, the digital supplies (+VL and −VL) can be separated from the analog supplies (+VS and −VS) to reduce digital crosstalk.
- Is the output amplifier of the AD1856R-REEL short-circuit protected?
Yes, the output amplifier is short-circuit protected and can withstand indefinite shorts to ground.
- What is the maximum clock rate supported by the serial input interface of the AD1856R-REEL?
The serial input interface supports a maximum clock rate of 10 MHz.
- What is the typical power dissipation of the AD1856R-REEL at ±5 V supplies?
The typical power dissipation is 110 mW at ±5 V supplies.
- What is the output voltage range of the AD1856R-REEL?
The output voltage range is ±3 V.
- What is the output current capability of the AD1856R-REEL?
The output current capability is up to ±8 mA.
- What is the operational temperature range for the AD1856R-REEL?
The operational temperature range is from 0°C to 70°C.
- What type of architecture does the AD1856R-REEL use for its DAC?
The DAC uses a combination of segmented decoder and R-2R architectures.
