Overview
The AD667BD is a microprocessor-compatible 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD667 family and is known for its high precision and stability. It features a high-stability buried Zener voltage reference and a double-buffered input latch, making it suitable for a wide range of applications requiring accurate analog output.
The AD667BD is designed to interface directly with 4-, 8-, 12-, or 16-bit microprocessor buses, allowing for seamless integration into various systems. The device uses laser-trimmed thin-film resistor networks and high-speed bipolar current steering switches to ensure fast settling times and high accuracy.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Linearity Error (at +25°C) | ±1/4 LSB | |
| Linearity Error (over full temperature range) | ±1/2 LSB | |
| Temperature Range | -25°C to +85°C | °C |
| Power Supply Range | +15V to -15V | V |
| Power Supply Current (ICC, IEE) | 13.2 mA to 30 mA | mA |
| Digital Input High/Low Voltage | 2.0 V / 0.8 V | V |
| Package Type | 28-Pin Ceramic DIP (D) | |
| Storage Temperature Range | -65°C to +150°C | °C |
Key Features
- High-Stability Buried Zener Voltage Reference: Provides low noise and long-term stability.
- Double-Buffered Input Latch: Allows direct interface to 4-, 8-, 12-, or 16-bit microprocessor buses and avoids spurious analog output values.
- Laser-Trimmed Thin-Film Resistor Network: Ensures high accuracy and fast settling times.
- High-Speed Bipolar Current Steering Switches: Enhances performance with fast switching times.
- Microprocessor Compatibility: Supports strobe pulses as short as 100 ns, making it compatible with fast microprocessors.
- Guaranteed Monotonicity: Ensures that the output increases with increasing digital input over the full temperature range.
Applications
- Industrial Control Systems: Where precise analog outputs are required for control and monitoring.
- Aerospace and Defense: Due to its high reliability and performance over a wide temperature range.
- Medical Devices: For applications requiring high accuracy and stability in analog output.
- Automotive Systems: For control and monitoring systems that need reliable and accurate analog signals.
- Test and Measurement Equipment: Where high precision and stability in analog outputs are crucial.
Q & A
- What is the resolution of the AD667BD DAC?
The AD667BD has a 12-bit resolution.
- What is the temperature range for the AD667BD?
The AD667BD operates over a temperature range of -25°C to +85°C.
- What type of voltage reference does the AD667BD use?
The AD667BD uses a high-stability buried Zener voltage reference.
- Is the AD667BD compatible with microprocessors?
Yes, the AD667BD is microprocessor-compatible and can interface directly with 4-, 8-, 12-, or 16-bit microprocessor buses.
- What is the maximum linearity error of the AD667BD at +25°C?
The maximum linearity error at +25°C is ±1/4 LSB.
- What is the power supply range for the AD667BD?
The power supply range is +15V to -15V.
- What is the package type of the AD667BD?
The AD667BD is available in a 28-Pin Ceramic DIP (D) package.
- Does the AD667BD have double-buffered latches?
Yes, the AD667BD features double-buffered input latches to avoid spurious analog output values.
- What is the storage temperature range for the AD667BD?
The storage temperature range is -65°C to +150°C.
- Is the AD667BD guaranteed to be monotonic over its full temperature range?
Yes, the AD667BD is guaranteed to be monotonic over its full temperature range.
