Overview
The AD558JD, produced by Analog Devices Inc., is a complete voltage-output 8-bit digital-to-analog converter (DAC) known as the DACPORT. This device integrates an output amplifier, a full microprocessor interface, and a precision voltage reference on a single monolithic chip. It is designed to operate without the need for external components or trims, making it a versatile and efficient solution for interfacing an 8-bit data bus to an analog system.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 8 bits | |
| Output Voltage Range | 0 V to 2.56 V, 0 V to 10 V | Selectable via output range select pin |
| Supply Voltage | +4.5 V to +16.5 V | |
| Temperature Range | 0°C to +70°C (J and K grades), -55°C to +125°C (S and T grades) | |
| Package Types | 16-pin plastic DIP, 16-pin hermetic ceramic DIP, 20-pin JEDEC standard PLCC | |
| Settling Time | 800 ns for a full-scale step to ±1/2 LSB | |
| Control Logic | Integrated injection logic (I2L) | Full microprocessor interface |
Key Features
- Complete DAC Solution: Includes output amplifier, full microprocessor interface, and precision voltage reference on a single chip.
- No External Components Required: No need for external trims or components to achieve full accuracy.
- Precision Voltage Reference: Patented low voltage bandgap circuit for stable operation.
- High Speed Output Buffer: Operates in non-inverting mode with user-selectable gain.
- Reliability and Durability: Available in hermetically-sealed packages and screened to MIL-STD-883 for military grades.
Applications
- Battery-Operated Devices: Suitable for portable applications due to its wide supply voltage range.
- Automotive Systems: Can operate within the temperature and voltage ranges typical of automotive environments.
- Digital Mainframe Systems: Ideal for integrating digital data into analog systems in mainframe environments).
- Military and Aerospace: Available in grades screened to MIL-STD-883, making it suitable for harsh environments).
Q & A
- What is the resolution of the AD558JD DAC?
The AD558JD has an 8-bit resolution.
- What are the output voltage ranges of the AD558JD?
The output voltage ranges are 0 V to 2.56 V and 0 V to 10 V, selectable via the output range select pin.
- What is the supply voltage range for the AD558JD?
The supply voltage range is +4.5 V to +16.5 V.
- What are the available package types for the AD558JD?
The AD558JD is available in 16-pin plastic DIP, 16-pin hermetic ceramic DIP, and 20-pin JEDEC standard PLCC packages.
- How long does it take for the AD558JD to settle to ±1/2 LSB for a full-scale step?
The settling time is 800 ns for a full-scale step to ±1/2 LSB.
- What type of control logic does the AD558JD use?
The AD558JD uses integrated injection logic (I2L) for its control logic.
- Does the AD558JD require external components or trims?
No, the AD558JD does not require external components or trims to achieve full accuracy.
- What are the temperature ranges for the different grades of the AD558JD?
The J and K grades are specified for 0°C to +70°C, while the S and T grades are specified for -55°C to +125°C.
- Is the AD558JD suitable for military and aerospace applications?
- What is the purpose of the output buffer amplifier in the AD558JD?
The output buffer amplifier operates in non-inverting mode and is used to set the gain of the output voltage, determined by user connections at the output range select pin.
