Overview
The AD574A, identified by the part number 5962-85127013A, is a complete 12-bit successive-approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This integrated circuit integrates all analog and digital functions on a single chip, utilizing Analog Devices' Bipolar/I2L process. The device is known for its high precision, achieved through active laser-trimming of thin-film resistors and the use of an implanted buried Zener voltage reference for low noise and low drift.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Package Type | 28-Lead LCC, 28-Lead CerDIP, 28-Lead PDIP, 28-Lead PLCC |
| Operating Temperature Range | 0°C to +70°C (J, K, L grades), -55°C to +125°C (S, T, U grades) |
| Interface Type | Parallel |
| Logic Type | I2L logic for successive-approximation register and control circuitry |
| Voltage Reference | Implanted buried Zener for low noise and low drift |
Key Features
- High precision due to active laser-trimming of thin-film resistors.
- Low noise and low drift voltage reference using an implanted buried Zener.
- I2L logic for the successive-approximation register, control circuitry, and 3-state output buffers.
- Available in six different grades with varying temperature ranges and package options.
- Optional processing to MIL-STD-883C Class B for certain grades.
Applications
- Data acquisition systems requiring high precision and reliability.
- Military and aerospace applications due to its compliance with MIL-STD-883C Class B and JAN QPL standards.
- Industrial control systems where accurate analog-to-digital conversion is critical.
- Medical devices that require precise measurement and conversion of analog signals.
Q & A
- What is the resolution of the AD574A ADC?
The AD574A has a resolution of 12 bits.
- What are the different package types available for the AD574A?
The AD574A is available in 28-Lead LCC, 28-Lead CerDIP, 28-Lead PDIP, and 28-Lead PLCC packages.
- What are the operating temperature ranges for the different grades of the AD574A?
The J, K, and L grades operate from 0°C to +70°C, while the S, T, and U grades operate from -55°C to +125°C.
- What type of logic is used in the AD574A for the successive-approximation register and control circuitry?
The AD574A uses I2L logic for the successive-approximation register and control circuitry.
- What is the type of voltage reference used in the AD574A?
The AD574A uses an implanted buried Zener voltage reference for low noise and low drift.
- Is the AD574A suitable for military and aerospace applications?
Yes, certain grades of the AD574A are compliant with MIL-STD-883C Class B and JAN QPL standards, making it suitable for military and aerospace applications.
- What are some common applications of the AD574A?
The AD574A is commonly used in data acquisition systems, industrial control systems, and medical devices where high precision and reliability are required.
- Does the AD574A have any special processing options?
Yes, certain grades of the AD574A can be processed to MIL-STD-883C Class B standards.
- How does the AD574A achieve high precision?
The AD574A achieves high precision through active laser-trimming of thin-film resistors at the wafer stage.
- What is the interface type of the AD574A?
The AD574A uses a parallel interface.
