Overview
The AD558KN/+, produced by Analog Devices Inc., is a complete voltage-output 8-bit digital-to-analog converter (DAC) integrated on a single monolithic chip. This device includes an output amplifier, a full microprocessor interface, and a precision voltage reference, eliminating the need for external components or trims to achieve full accuracy. The AD558KN/+ is designed using advanced monolithic bipolar technologies, including integrated injection logic (I²L) for the microprocessor interface and control logic, and a patented low-voltage bandgap circuit for the internal precision voltage reference. This design ensures reliable operation over a wide temperature range and supports various application environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 8 | |
| Number of D/A Converters | 1 | |
| Settling Time | 800 ns (full-scale step) | ns |
| Output Type | Voltage - Buffered | |
| Differential Output | No | |
| Data Interface | Parallel | |
| Reference Type | Internal | |
| Voltage - Supply, Analog | 4.5 V ~ 16.5 V | V |
| Voltage - Supply, Digital | 4.5 V ~ 16.5 V | V |
| INL/DNL (LSB) | ±0.25 (Max) | LSB |
| Architecture | R-2R | |
| Operating Temperature | 0°C ~ 70°C (J and K grades), -55°C ~ 125°C (S and T grades) | °C |
| Package | 16-pin plastic (N) or hermetic ceramic (D) DIP, 20-pin JEDEC standard PLCC |
Key Features
- Complete DAC on a Single Chip: Includes output amplifier, full microprocessor interface, and precision voltage reference, eliminating the need for external components or trims.
- Precision and Stability: Thin-film silicon-chromium resistors ensure stability and guaranteed monotonic operation over the entire operating temperature range. Laser-wafer-trimming of these resistors allows for absolute calibration at the factory to within ±1 LSB.
- Wide Operating Voltage Range: Operates from a single positive power supply voltage between +4.5 V and +16.5 V, making it suitable for battery-operated, portable, automotive, or digital mainframe applications.
- High Speed and Accuracy: Voltage settling to ±1/2 LSB for a full-scale step in 800 ns, ensuring high-speed and accurate conversions.
- Military and Industrial Grades: Available in grades specified for use over different temperature ranges, including military grades screened to MIL-STD-883.
Applications
- Digital Mainframe Systems: Suitable for high-performance digital systems requiring accurate and reliable analog output.
- Automotive Systems: Operates over a wide voltage range, making it ideal for automotive applications where power supply variations are common.
- Portable and Battery-Operated Devices: Efficient power consumption and wide operating voltage range make it suitable for battery-powered devices.
- Military and Aerospace: Available in military grades and hermetically sealed packages, ensuring reliability in harsh environments.
- Industrial Control Systems: Used in industrial control systems requiring precise analog outputs from digital inputs.
Q & A
- What is the AD558KN/+ and what does it include?
The AD558KN/+ is a complete voltage-output 8-bit digital-to-analog converter, including an output amplifier, full microprocessor interface, and precision voltage reference on a single monolithic chip.
- What is the operating voltage range of the AD558KN/+?
The AD558KN/+ operates from a single positive power supply voltage between +4.5 V and +16.5 V.
- What are the different grades of the AD558 available?
The AD558 is available in four performance grades: J, K, S, and T. Grades J and K are specified for use over the 0°C to +70°C temperature range, while grades S and T are specified for -55°C to +125°C operation.
- What is the settling time of the AD558KN/+ for a full-scale step?
The AD558KN/+ has a settling time of 800 ns for a full-scale step.
- Does the AD558KN/+ require external components or trims?
No, the AD558KN/+ does not require external components or trims to interface with full accuracy an 8-bit data bus to an analog system.
- What type of package is the AD558KN/+ available in?
The AD558KN/+ is available in 16-pin plastic (N) or hermetic ceramic (D) DIP packages, as well as 20-pin JEDEC standard PLCC packages.
- Is the AD558KN/+ suitable for military and aerospace applications?
Yes, the AD558KN/+ is available in military grades screened to MIL-STD-883, making it suitable for harsh military and aerospace environments.
- What is the architecture of the D/A converter in the AD558KN/+?
The D/A converter in the AD558KN/+ uses an R-2R resistor ladder network.
- How does the AD558KN/+ ensure precision and stability?
The AD558KN/+ uses thin-film silicon-chromium resistors and laser-wafer-trimming to ensure stability and precise calibration.
- What are some typical applications of the AD558KN/+?
The AD558KN/+ is used in digital mainframe systems, automotive systems, portable and battery-operated devices, military and aerospace, and industrial control systems.
