Overview
The AD669BN, produced by Analog Devices Inc., is a complete 16-bit monolithic D/A converter known as the DACPORT®. It integrates an on-board reference and output amplifier, making it a comprehensive solution for precision voltage output applications. Manufactured using Analog Devices' BiMOS II process, this device combines low power CMOS logic functions with high precision bipolar linear circuitry. The AD669BN includes current switches, decoding logic, an output amplifier, a buried Zener reference, and double-buffered latches, ensuring high accuracy and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Digital Input (VIH - Logic '1') | 2.0 | 5.5 | - | Volts |
| Digital Input (VIL - Logic '0') | 0 | 0.8 | - | Volts |
| Integral Nonlinearity (TMIN to TMAX) | -2 | - | 1 LSB | - |
| Differential Nonlinearity (TMIN to TMAX) | -2 | - | 1 LSB | - |
| Monotonicity Over Temperature | 14 | 14 | 15 Bits | - |
| Gain Error | -0.15 | -0.10 | -0.10 % of FSR | - |
| Output Settling Time | - | 10 µs | - | - |
| Output Range | -10 V to +10 V (Bipolar) | - | 0 V to +10 V (Unipolar) | - |
| Operating Temperature | -40°C | - | +85°C | - |
| Package Type | - | - | 28-pin Plastic DIP | - |
Key Features
- On-board Reference and Output Amplifier: The AD669BN includes an internal buried Zener reference and an output amplifier, providing a complete D/A conversion solution.
- High Precision: The device maintains integral nonlinearity of ±0.003% and differential nonlinearity of ±0.003% max, ensuring high accuracy.
- Fast Settling Time: The output amplifier provides a voltage output settling time of 10 µs to within 1/2 LSB for a full-scale step.
- 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 a unipolar output range of 0 V to +10 V or a bipolar output range of –10 V to +10 V without external components.
- MIL-STD-883 Compliance: Available in versions compliant with MIL-STD-883 for military and high-reliability applications.
Applications
- Signal Generation: Suitable for signal generation applications due to its low THD+N (0.009%) and high SNR (83 dB).
- Industrial Control Systems: Used in industrial control systems requiring precise voltage output and high reliability.
- Military and Aerospace: Compliant with MIL-STD-883, making it suitable for military and aerospace applications.
- Medical Devices: Can be used in medical devices that require high precision and reliability in voltage output.
Q & A
- What is the resolution of the AD669BN D/A converter?
The AD669BN has a resolution of 16 bits.
- What is the output settling time of the AD669BN?
The output settling time is 10 µs to within 1/2 LSB for a full-scale step.
- What are the available output ranges for the AD669BN?
The output range can be set to either a unipolar range of 0 V to +10 V or a bipolar range of –10 V to +10 V.
- Is the AD669BN compliant with any military standards?
Yes, the AD669BN is available in versions compliant with MIL-STD-883.
- What type of logic signals control the latches in the AD669BN?
The latches are controlled by TTL/LSTTL/5 V CMOS compatible signals: CS, L1, and LDAC.
- What is the operating temperature range for the AD669BN?
The operating temperature range is from –40°C to +85°C.
- What is the package type for the AD669BN?
The AD669BN is packaged in a 28-pin plastic DIP.
- What is the significance of the double-buffered latch structure in the AD669BN?
The double-buffered latch structure eliminates data skew errors and allows simultaneous updating of DACs in multi-DAC systems.
- How accurate is the internal reference voltage of the AD669BN?
The internal buried Zener reference is laser trimmed to 10.000 volts with a ±0.2% maximum error.
- What are some typical applications of the AD669BN?
The AD669BN is typically used in signal generation, industrial control systems, military and aerospace applications, and medical devices.
