Overview
The AD669SQ is a complete 16-bit monolithic digital-to-analog converter (DAC) produced by Analog Devices Inc. It features an on-board reference and output amplifier, making it a versatile component for various precision applications. The AD669SQ is manufactured using Analog Devices' BiMOS II process, which allows for the integration of low power CMOS logic functions and high precision bipolar linear circuitry on the same chip. This device is particularly suited for applications requiring high accuracy and reliability, including signal generation and precision control systems.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Digital Input (VIH - Logic '1') | 2.0 | 5.5 | V | |
| Digital Input (VIL - Logic '0') | 0 | 0.8 | V | |
| Integral Nonlinearity (INL) | ±0.003% | ±1 LSB | % of FSR | |
| Differential Nonlinearity (DNL) | ±0.003% | ±1 LSB | % of FSR | |
| Monotonicity Over Temperature | 14 | 15 | Bits | |
| Gain Error | ±0.10% | ±0.15% | % of FSR | |
| Output Range (Unipolar) | 0 | +10 | V | |
| Output Range (Bipolar) | -10 | +10 | V | |
| Operating Temperature Range | -55 | +125 | °C |
Key Features
- On-board Reference and Output Amplifier: The AD669SQ includes an internal buried Zener reference and an output amplifier, ensuring high precision and stability.
- Double-Buffered Latches: The device features double-buffered latches that eliminate data skew errors and allow for simultaneous updating of DACs in multi-DAC systems.
- Pin-Programmable Output Range: The output range can be set to either unipolar (0 V to +10 V) or bipolar (-10 V to +10 V) without the need for external components.
- High Accuracy and Linearity: The AD669SQ maintains high accuracy with integral nonlinearity and differential nonlinearity of ±0.003% and ensures 15-bit monotonicity over temperature.
- MIL-STD-883 Compliance: Available versions comply with MIL-STD-883, making it suitable for military and aerospace applications.
Applications
- Signal Generation: The AD669SQ is suitable for signal generation applications due to its high accuracy and low THD+N (0.009%) and high SNR (83 dB).
- Precision Control Systems: It is used in precision control systems where high accuracy and reliability are critical.
- Military and Aerospace: The MIL-STD-883 compliant versions make it ideal for military and aerospace applications.
- Industrial Automation: The device can be used in industrial automation for precise control and measurement.
Q & A
- What is the resolution of the AD669SQ?
The AD669SQ has a resolution of 16 bits.
- What is the operating temperature range of the AD669SQ?
The operating temperature range is from -55°C to +125°C.
- Can the output range of the AD669SQ be programmed?
Yes, the output range can be set to either unipolar (0 V to +10 V) or bipolar (-10 V to +10 V) through pin programming.
- What is the integral nonlinearity of the AD669SQ?
The integral nonlinearity is ±0.003%.
- Is the AD669SQ compliant with MIL-STD-883?
Yes, certain versions of the AD669SQ are compliant with MIL-STD-883.
- What is the settling time of the output amplifier?
The output amplifier has a settling time of 10 µs to within 1/2 LSB for a full-scale step.
- How is data loaded into the AD669SQ?
Data is loaded into the AD669SQ in a parallel 16-bit format.
- What are the benefits of the double-buffered latches in the AD669SQ?
The double-buffered latches eliminate data skew errors and allow for simultaneous updating of DACs in multi-DAC systems.
- What is the THD+N specification of the AD669SQ?
The THD+N specification is 0.009%.
- What is the SNR specification of the AD669SQ?
The SNR specification is 83 dB.
