Overview
The 5962-9169003M3A, also known as the AD674B, is a complete 12-bit successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD674B and AD774B series, which are designed to offer high precision and performance. The AD674B includes a high precision voltage reference and clock on-chip, making it a self-contained solution that requires only power supplies and control signals for operation. It is pin compatible with the industry standard AD574A but offers faster conversion times and lower power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Time | Maximum 15 µs |
| Input Type | Analog |
| Output Type | Three-state output buffer for direct interface to 8- and 16-bit microprocessor busses |
| Package Type | 28-pin LCC, 28-lead SOIC, 28-pin hermetically sealed ceramic DIP |
| Temperature Range | -55°C to +125°C (T grade), -40°C to +85°C (A and B grades), 0°C to +70°C (J and K grades) |
| Power Supplies | Required for operation |
Key Features
- High precision voltage reference and clock included on-chip
- Fast conversion time: maximum 15 µs for AD674B
- Low power consumption compared to AD574A
- Three-state output buffer for direct interface to microprocessor busses
- Active trimming of thin-film resistors to minimize offset linearity and scaling errors
- Monolithic design using Analog Devices' BiMOS II process, combining high-performance bipolar analog circuitry with digital CMOS logic
Applications
The AD674B is suitable for a variety of applications requiring high precision and fast analog-to-digital conversion. These include:
- Industrial control systems
- Medical devices
- Aerospace and military applications due to its wide temperature range and hermetically sealed packages
- Data acquisition systems
- Embedded systems requiring direct interface to microprocessors
Q & A
- What is the resolution of the AD674B?
The AD674B has a resolution of 12 bits.
- What is the maximum conversion time of the AD674B?
The maximum conversion time of the AD674B is 15 µs.
- What types of packages are available for the AD674B?
The AD674B is available in 28-pin LCC, 28-lead SOIC, and 28-pin hermetically sealed ceramic DIP packages.
- What is the temperature range for the different grades of AD674B?
The temperature range varies by grade: -55°C to +125°C (T grade), -40°C to +85°C (A and B grades), and 0°C to +70°C (J and K grades).
- Does the AD674B include a voltage reference and clock on-chip?
- How does the AD674B compare to the AD574A in terms of performance?
The AD674B offers faster conversion times and lower power consumption compared to the AD574A.
- What is the purpose of the three-state output buffer in the AD674B?
The three-state output buffer allows for direct interface to 8- and 16-bit microprocessor busses.
- What manufacturing process is used for the AD674B?
The AD674B is manufactured using Analog Devices' BiMOS II process, which combines high-performance bipolar analog circuitry with digital CMOS logic.
- What types of applications is the AD674B suitable for?
The AD674B is suitable for industrial control systems, medical devices, aerospace and military applications, data acquisition systems, and embedded systems.
- How does the AD674B minimize offset linearity and scaling errors?
The AD674B minimizes offset linearity and scaling errors through active trimming of thin-film resistors.
