Overview
The AD674BBD 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 is known for its high precision, fast conversion times, and compatibility with industry-standard pinouts. The AD674BBD integrates a high-precision voltage reference and clock on-chip, requiring only power supplies and control signals for operation. It is designed to interface directly with 8- and 16-bit microprocessor busses, making it versatile for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Time | 15 µs (maximum) |
| Input Voltage Ranges | 0 V to 10 V, 0 V to 20 V (unipolar); –5 V to +5 V, –10 V to +10 V (bipolar) |
| Operating Supply Voltage | +5 V, ±12 V or ±15 V |
| Power Dissipation | 375 mW |
| Temperature Range | –40°C to +85°C (A and B grades) |
| Package | 28-lead hermetically sealed ceramic DIP |
| Reference Type | Internal |
| Sample and Hold | No |
Key Features
- Industry-standard pinout compatible with AD574A, but with faster conversion times and lower power consumption.
- High-precision voltage reference and clock integrated on-chip.
- Flexible digital interface with three-state output buffer circuitry for direct connection to 8- and 16-bit microprocessor busses.
- Monolithic design using Analog Devices’ BiMOS II process, combining high-performance bipolar analog circuitry with digital CMOS logic.
- Active laser trimming of thin-film resistors to minimize offset, linearity, and scaling errors.
Applications
The AD674BBD is suitable for a variety of demanding applications, including industrial and consumer electronics. Its high precision, fast conversion times, and robust temperature range make it ideal for use in environments that require reliable and accurate analog-to-digital conversion. Specific applications include data acquisition systems, process control, and medical devices.
Q & A
- What is the resolution of the AD674BBD?
The AD674BBD has a resolution of 12 bits. - What is the maximum conversion time of the AD674BBD?
The maximum conversion time is 15 µs. - What are the input voltage ranges for the AD674BBD?
The input voltage ranges are 0 V to 10 V, 0 V to 20 V (unipolar); –5 V to +5 V, –10 V to +10 V (bipolar). - What are the operating supply voltages for the AD674BBD?
The operating supply voltages are +5 V, ±12 V or ±15 V. - What is the power dissipation of the AD674BBD?
The power dissipation is 375 mW. - What is the temperature range for the AD674BBD?
The temperature range is –40°C to +85°C for A and B grades. - What type of package does the AD674BBD come in?
The AD674BBD comes in a 28-lead hermetically sealed ceramic DIP package. - Does the AD674BBD have an internal reference?
Yes, the AD674BBD has an internal reference. - Does the AD674BBD include a sample and hold circuit?
No, the AD674BBD does not include a sample and hold circuit. - What is the significance of the BiMOS II process used in the AD674BBD?
The BiMOS II process allows for the combination of high-performance bipolar analog circuitry with digital CMOS logic on the same die.
