Overview
The AD674BARZ is a complete 12-bit successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD674B series, which includes several grades with varying temperature ranges and package options. The AD674B series is known for its high precision, fast conversion times, and low power consumption. It is designed to be pin compatible with the industry standard AD574A but offers improved performance and efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Time | 15 µs (maximum) |
| Temperature Range | -40°C to +85°C (A and B grades), 0°C to +70°C (J and K grades), -55°C to +125°C (T grade) |
| Package | 28-Lead SOIC (Wide), 28-pin plastic DIP, 28-pin hermetically sealed ceramic DIP |
| Power Supplies | Requires only power supplies and control signals for operation |
| Output Buffer | Three-state output buffer circuitry for direct interface to 8- and 16-bit microprocessor busses |
| Process Technology | Analog Devices' BiMOS II process |
Key Features
- High precision voltage reference and clock included on chip
- Active trimming of thin-film resistors to minimize offset linearity and scaling errors
- Faster conversion time and access speed compared to the AD574A
- Low power consumption
- Monolithic design combining high-performance bipolar analog circuitry with digital CMOS logic
- Three-state output buffer for direct interface to microprocessor busses
Applications
The AD674BARZ is suitable for a variety of applications requiring high precision and fast conversion times, such as industrial control systems, medical devices, and data acquisition systems. Its low power consumption and compact packaging make it ideal for use in embedded systems and other space-constrained environments.
Q & A
- What is the resolution of the AD674BARZ?
The AD674BARZ has a resolution of 12 bits. - What is the maximum conversion time of the AD674BARZ?
The maximum conversion time is 15 µs. - What are the available temperature ranges for the AD674B series?
The temperature ranges include -40°C to +85°C (A and B grades), 0°C to +70°C (J and K grades), and -55°C to +125°C (T grade). - What types of packages are available for the AD674BARZ?
The device is available in 28-Lead SOIC (Wide), 28-pin plastic DIP, and 28-pin hermetically sealed ceramic DIP packages. - Does the AD674BARZ require external voltage references or clocks?
No, the AD674BARZ includes a high precision voltage reference and clock on chip. - How does the AD674BARZ minimize offset linearity and scaling errors?
It uses active trimming of thin-film resistors to minimize these errors. - Is the AD674BARZ compatible with other industry-standard ADCs?
Yes, it is pin compatible with the industry standard AD574A. - What is the process technology used in the AD674BARZ?
The device is implemented using Analog Devices' BiMOS II process. - What are some typical applications for the AD674BARZ?
Typical applications include industrial control systems, medical devices, and data acquisition systems. - Does the AD674BARZ have a three-state output buffer?
Yes, it has a three-state output buffer circuitry for direct interface to 8- and 16-bit microprocessor busses.
