Overview
The AD669BR is a monolithic 16-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. It is part of the DACPORT® series and is known for its high precision and reliability. The AD669BR integrates an on-board reference and output amplifier, making it a complete solution for various applications requiring precise voltage output. The device is manufactured using Analog Devices' BiMOS II process, which combines low power CMOS logic with high precision bipolar linear circuitry.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Digital Input (VIH, Logic 1) | 2.0 | 5.5 | 5.5 | V |
| Digital Input (VIL, Logic 0) | 0 | 0.8 | 0.8 | V |
| Integral Nonlinearity (INL) | −2 | −1 | 2 | LSB |
| Differential Nonlinearity (DNL) | −2 | −1 | 2 | LSB |
| Monotonicity Over Temperature | 14 | 15 | 15 | Bits |
| Gain Error | −0.15 | −0.10 | 0.10 | % of FSR |
| Output Range | 0 V to +10 V (Unipolar) | −10 V to +10 V (Bipolar) | V | |
| Settling Time | 10 ms | to within 1/2 LSB for full-scale step | ||
| Operating Temperature | −40°C | +85°C | °C | |
| Package | 28-pin SOIC |
Key Features
- Complete 16-bit DAC with On-board Reference and Output Amplifier: The AD669BR includes current switches, decoding logic, an output amplifier, and a buried Zener reference on a single chip.
- High Precision: Maintains integral nonlinearity of ±0.003% and differential nonlinearity of ±0.003% max, ensuring high accuracy over temperature.
- Double-Buffered Latches: Eliminates data skew errors and allows simultaneous updating of DACs in multi-DAC systems.
- Pin-Programmable Output Range: Can be set to provide either a unipolar output range of 0 V to +10 V or a bipolar output range of −10 V to +10 V.
- Compliance with MIL-STD-883: Available in versions compliant with military standards for enhanced reliability.
- Low Power Consumption: Manufactured using BiMOS II process, combining low power CMOS logic with high precision bipolar linear circuitry.
Applications
- Signal Generation: Suitable for applications requiring precise signal generation due to its high linearity and low distortion.
- Industrial Control Systems: Used in control systems where accurate voltage output is crucial.
- Medical Equipment: Applies to medical devices that require high precision and reliability in their analog output.
- Aerospace and Defense: Compliant with MIL-STD-883, making it suitable for military and aerospace applications.
- Test and Measurement Equipment: Ideal for use in test and measurement instruments that demand high accuracy and stability.
Q & A
- What is the resolution of the AD669BR DAC?
The AD669BR has a resolution of 16 bits.
- What are the operating temperature ranges for the AD669BR?
The AD669BR operates from −40°C to +85°C.
- What types of output ranges can the AD669BR provide?
The AD669BR can provide either a unipolar output range of 0 V to +10 V or a bipolar output range of −10 V to +10 V.
- What is the settling time of the AD669BR for a full-scale step?
The output amplifier settles within 10 ms to within 1/2 LSB for a full-scale step.
- Does the AD669BR have any military-grade versions?
Yes, the AD669BR is available in versions compliant with MIL-STD-883.
- What is the package type for the AD669BR?
The AD669BR is packaged in a 28-pin SOIC.
- How does the double-buffered latch structure benefit the AD669BR?
The double-buffered latch structure eliminates data skew errors and allows simultaneous updating of DACs in multi-DAC systems.
- What is the significance of the BiMOS II process in the AD669BR?
The BiMOS II process allows the fabrication of low power CMOS logic functions on the same chip as high precision bipolar linear circuitry.
- What are the typical applications of the AD669BR?
The AD669BR is typically used in signal generation, industrial control systems, medical equipment, aerospace and defense, and test and measurement equipment.
- What is the reference type used in the AD669BR?
The AD669BR uses an internal buried Zener reference, which is also available for external applications.
