Overview
The AD767KNZ is a 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD767 series, known for its high precision and stability. The AD767KNZ integrates a high-stability buried Zener reference and an input latch on a single chip, making it a complete voltage output DAC. It is designed to provide high accuracy through the use of 12 precision high-speed bipolar current steering switches and a laser-trimmed thin-film resistor network.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits |
| Logic Levels (TTL Compatible) | 0 | 0.8 | 0.8 | V (Logic '0') |
| Logic Levels (TTL Compatible) | 2.0 | 5.5 | 5.5 | V (Logic '1') |
| Input Current (VIH = 5.5 V) | 3 | 10 | 10 | µA |
| Input Current (VIL = 0.8 V) | 1 | 5 | 5 | µA |
| Linearity Error @ +25°C | ±1/2 | ±1/2 | ±1/2 | LSB |
| Supply Voltage Range | ±11.4 | ±15 | ±16.5 | V |
| Supply Current (+11.4 to +16.5 V dc) | 9 | 13 | 13 | mA |
| Supply Current (–11.4 to –16.5 V dc) | 18 | 23 | 23 | mA |
| Total Power Consumption | 400 | 600 | 600 | mW |
| Operating Temperature Range | 0 | 70 | °C (J/K Grade) | |
| Operating Temperature Range | –25 | 85 | °C (A/B Grade) | |
| Storage Temperature Range | –65 | 125 | °C |
Key Features
- High Precision and Stability: The AD767KNZ features a high-stability buried Zener reference, ensuring long-term stability and low noise.
- Laser-Trimmed Resistor Network: The use of a laser-trimmed thin-film resistor network provides excellent linearity and accuracy.
- Microprocessor Compatibility: The on-chip latch allows for direct interface to 12-bit buses and responds to strobe pulses as short as 40 ns, making it compatible with fast microprocessors.
- Monotonicity: The DAC is guaranteed to be monotonic over the full operating temperature range, ensuring that the output either increases or remains constant for increasing digital inputs.
- Wide Temperature Range Performance: The AD767KNZ is designed to operate over a wide temperature range with minimal gain and offset drift.
Applications
- Industrial Control Systems: The high precision and stability of the AD767KNZ make it suitable for industrial control systems where accurate analog output is critical.
- Medical Devices: Its monotonicity and linearity over a wide temperature range make it a good choice for medical devices that require precise analog outputs.
- Aerospace and Defense: The AD767KNZ can be used in military and aerospace applications due to its high reliability and performance over a wide temperature range.
- Automotive Systems: It can be applied in automotive systems that require high accuracy and stability in analog output.
Q & A
- What is the resolution of the AD767KNZ?
The AD767KNZ has a resolution of 12 bits.
- What is the typical linearity error of the AD767KNZ at +25°C?
The typical linearity error is ±1/2 LSB.
- What is the operating temperature range for the AD767KNZ?
The operating temperature range is 0°C to 70°C for J/K grade and –25°C to 85°C for A/B grade.
- Is the AD767KNZ monotonic over its full operating temperature range?
Yes, the AD767KNZ is guaranteed to be monotonic over its full operating temperature range.
- What is the supply voltage range for the AD767KNZ?
The supply voltage range is ±11.4 V to ±16.5 V.
- How does the AD767KNZ ensure high stability and low noise?
The AD767KNZ features a high-stability buried Zener reference, which ensures long-term stability and low noise.
- Can the AD767KNZ be used with fast microprocessors?
Yes, the on-chip latch allows for direct interface to 12-bit buses and responds to strobe pulses as short as 40 ns, making it compatible with fast microprocessors.
- What are some common applications of the AD767KNZ?
Common applications include industrial control systems, medical devices, aerospace and defense, and automotive systems.
- What is the total power consumption of the AD767KNZ?
The total power consumption is typically 400 mW to 600 mW.
- Is the AD767KNZ available in different packages?
Yes, the AD767 series, including the AD767KNZ, is available in various packages such as 24-Lead PDIP and 28-Lead PLCC.
