Overview
The AD674BAR is a 12-bit monolithic analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is part of the AD674B series, known for its high precision and versatility in various applications. The AD674BAR features a successive-approximation (SAR) architecture and includes on-chip voltage reference and clock, making it a complete solution for analog-to-digital conversion. It operates with multiple power supply options and supports direct interface to 8- and 16-bit microprocessor buses.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package | 28-SOIC (0.295", 7.50mm Width) |
| Number of Bits | 12 |
| Number of Inputs | 2 |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Architecture | SAR (Successive Approximation) |
| Reference Type | Internal |
| Voltage - Supply, Analog | ±11.4 V ~ 16.5 V |
| Voltage - Supply, Digital | 5 V |
| Operating Temperature | –40°C ~ 85°C |
| Conversion Time | 15 µs (maximum) |
Key Features
- High-precision 12-bit analog-to-digital conversion with successive-approximation architecture.
- On-chip voltage reference and clock, eliminating the need for external components.
- Multiple power supply options: +5 V and ±12 V or ±15 V.
- Three-state output buffer circuitry for direct interface to 8- and 16-bit microprocessor buses.
- Industry standard pinout compatible with AD574A, but with faster conversion time and lower power consumption.
- Active laser trimming of thin-film resistors to minimize offset, linearity, and scaling errors.
- Supports four calibrated ranges: 0 V to 10 V and 0 V to 20 V unipolar; –5 V to +5 V and –10 V to +10 V bipolar.
Applications
The AD674BAR is suitable for a variety of applications requiring high-precision analog-to-digital conversion, including:
- Industrial control systems.
- Consumer electronics.
- Data acquisition systems.
- Medical devices.
- Aerospace and defense systems.
Q & A
- What is the resolution of the AD674BAR ADC?
The AD674BAR has a 12-bit resolution.
- What is the conversion time of the AD674BAR?
The conversion time is up to 15 µs (maximum).
- What are the power supply options for the AD674BAR?
The AD674BAR operates on +5 V and ±12 V or ±15 V power supplies.
- Does the AD674BAR require external components for operation?
No, the AD674BAR includes on-chip voltage reference and clock, eliminating the need for external components.
- What is the operating temperature range of the AD674BAR?
The operating temperature range is –40°C to +85°C.
- How many input channels does the AD674BAR have?
The AD674BAR has 2 input channels.
- What type of data interface does the AD674BAR use?
The AD674BAR uses a parallel data interface.
- Is the AD674BAR RoHS compliant?
- What is the package type of the AD674BAR?
The AD674BAR comes in a 28-SOIC package.
- Can the AD674BAR be directly connected to microprocessors?
