Overview
The AD574ALNZ is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component integrates all analog and digital functions on a single chip, utilizing Analog Devices' Bipolar/I2L process. The design includes active laser-trimming of thin-film resistors to minimize offset, linearity, and scaling errors. The voltage reference is based on an implanted buried Zener, ensuring low noise and low drift. The digital side of the ADC uses I2L logic for the successive-approximation register, control circuitry, and 3-state output buffers.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Input Type | Single-ended |
| Conversion Method | Successive Approximation Register (SAR) |
| Temperature Range | 0°C to +70°C |
| Package Type | 28-Lead PDIP, 28-Lead PLCC, 28-Lead Ceramic DIP (Side-Brazed), 28-Lead LCC |
| Voltage Reference | Implanted buried Zener for low noise and low drift |
| Logic Type | I2L logic |
Key Features
- High accuracy and linearity due to active laser-trimming of thin-film resistors.
- Low noise and low drift voltage reference using an implanted buried Zener.
- I2L logic for digital functions, including the successive-approximation register and 3-state output buffers.
- Available in various package types, including 28-Lead PDIP, PLCC, and ceramic DIP.
- Optional processing to MIL-STD-883C Class B for certain grades.
Applications
The AD574ALNZ is suitable for a variety of applications requiring high-precision analog-to-digital conversion, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems, particularly where the component is specified for the -55°C to +125°C temperature range.
- Data acquisition systems.
- Automotive systems requiring robust and accurate ADCs.
Q & A
- What is the resolution of the AD574ALNZ?
The AD574ALNZ has a resolution of 12 bits. - What is the conversion method used by the AD574ALNZ?
The AD574ALNZ uses the Successive Approximation Register (SAR) conversion method. - What are the available package types for the AD574ALNZ?
The AD574ALNZ is available in 28-Lead PDIP, 28-Lead PLCC, 28-Lead Ceramic DIP (Side-Brazed), and 28-Lead LCC packages. - What is the temperature range for the AD574ALNZ?
The AD574ALNZ is specified for operation over the 0°C to +70°C temperature range. - Does the AD574ALNZ meet any military standards?
Yes, certain grades of the AD574ALNZ are available with optional processing to MIL-STD-883C Class B. - What type of logic is used in the digital functions of the AD574ALNZ?
The AD574ALNZ uses I2L logic for its digital functions. - How does the AD574ALNZ achieve high accuracy and linearity?
The AD574ALNZ achieves high accuracy and linearity through active laser-trimming of thin-film resistors. - What is the type of voltage reference used in the AD574ALNZ?
The AD574ALNZ uses an implanted buried Zener for its voltage reference, ensuring low noise and low drift. - Is the AD574ALNZ suitable for aerospace and defense applications?
Yes, the AD574ALNZ, particularly the grades specified for the -55°C to +125°C temperature range, is suitable for aerospace and defense applications. - Where can I find more detailed information about the AD574ALNZ?
More detailed information can be found on the Analog Devices website, as well as through distributors like Mouser and Digi-Key.
