Overview
The AD569KN is a 16-bit monolithic digital-to-analog converter (DAC) manufactured by Analog Devices Inc. using their BiMOS II process. This process allows for the integration of low power CMOS logic functions and high precision bipolar linear circuitry on the same chip. The AD569KN features a voltage-segmented architecture that ensures 16-bit monotonicity over time and temperature, making it suitable for high-accuracy applications. The device includes two resistor strings, selector switches, decoding logic, buffer amplifiers, and double-buffered input latches. It is available in various package options, including 28-pin plastic DIP and ceramic DIP packages, and is specified for operation over a temperature range of 0°C to +70°C.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Logic Input High (VIH) | 2.0 | 5.5 | Volts | |
| Logic Input Low (VIL) | 0 | 0.8 | Volts | |
| Input Current High (IIH) @ VIH = 5.5V | 10 | µA | ||
| Input Current Low (IIL) @ VIL = 0V | 10 | µA | ||
| Integral Nonlinearity | ±0.024% | |||
| Differential Nonlinearity | ±0.0004% | |||
| Settling Time | 3 µs | |||
| Reference Input Voltage | ±5 V | |||
| Operating Temperature | 0°C | +70°C |
Key Features
- Voltage-Segmented Architecture: Ensures 16-bit monotonicity over time and temperature.
- High Precision: Integral nonlinearity of ±0.024% and differential nonlinearity of ±0.0004%.
- Fast Settling Time: Output settling time of 3 µs to within ±0.001% for a full-scale step.
- Flexible Reference Input: Can operate with unipolar or bipolar reference input voltages, and supports AC references in multiplying applications.
- Double-Buffered Input Latches: Simplifies 8-bit bus interfacing and allows multiple DACs to be loaded asynchronously and updated simultaneously.
- High-Speed Buffer Amplifiers: Can supply ±5 V into a 1 kΩ load and drive capacitive loads up to 1000 pF.
- Kelvin Connections: Preserves gain and offset accuracy by providing separate reference force and sense connections.
Applications
The AD569KN is suitable for a variety of high-accuracy applications, including:
- Industrial Control Systems: Where precise analog output is required.
- Medical Equipment: For applications needing high accuracy and reliability.
- Aerospace and Defense: Given its compliance with MIL-STD-883 and its wide operating temperature range.
- Automotive Systems: For control and monitoring systems requiring high precision.
- Test and Measurement Equipment: Where accurate analog outputs are crucial.
Q & A
- What is the resolution of the AD569KN DAC?
The AD569KN has a resolution of 16 bits. - What is the typical settling time of the AD569KN?
The typical settling time is 3 µs to within ±0.001% for a full-scale step. - What are the operating temperature ranges for the AD569KN?
The AD569KN operates from 0°C to +70°C. - Can the AD569KN operate with an AC reference?
Yes, the AD569KN can operate with an AC reference in multiplying applications. - What is the integral nonlinearity of the AD569KN?
The integral nonlinearity is ±0.024%. - What is the differential nonlinearity of the AD569KN?
The differential nonlinearity is ±0.0004%. - How does the double-buffered input latch structure benefit the AD569KN?
The double-buffered structure simplifies 8-bit bus interfacing and allows multiple DACs to be loaded asynchronously and updated simultaneously. - What is the maximum load that the on-chip buffer amplifier can drive?
The on-chip buffer amplifier can supply ±5 V into a 1 kΩ load and drive capacitive loads up to 1000 pF. - Is the AD569KN compliant with any military standards?
Yes, the AD569KN is available in versions compliant with MIL-STD-883. - What are the package options available for the AD569KN?
The AD569KN is available in 28-pin plastic DIP and ceramic DIP packages.
