Overview
The AD7537KNZ, produced by Analog Devices Inc., is a dual 12-bit current output Digital-to-Analog Converter (DAC) integrated into a single monolithic chip. This device is designed to provide high precision and versatility, making it suitable for a variety of applications. The AD7537KNZ features double buffering of the data inputs, allowing for simultaneous update of both DACs, and each DAC has a separate analog ground (AGND) line, enhancing device versatility. The device is manufactured using the Linear Compatible CMOS (LC²MOS) process, ensuring compatibility with most microprocessors and accepting TTL, 74HC, and 5V CMOS logic level inputs.
Key Specifications
| Specification | Value |
|---|---|
| Number of DACs | 2 |
| Resolution | 12-bit |
| Output Type | Current Output |
| Power Supply | +12 V to +15 V, ±10% tolerance |
| Logic Compatibility | TTL, 74HC, 5V CMOS |
| Packages Available | 24-Lead PDIP, 28-Lead PLCC, 24-Lead SOIC (Wide) |
| DAC to DAC Matching | Typical: 0.5% |
| Reference Inputs | Separate reference inputs for each DAC |
| Control Signals | A0, A1, CS, WR, UPD, CLR |
Key Features
- Dual 12-Bit DACs: Two identical 12-bit multiplying D/A converters on a single chip, saving valuable board space and ensuring excellent thermal tracking.
- Double Buffering: Allows simultaneous update of both DACs, enhancing performance in applications requiring synchronized output changes.
- Separate AGND Lines: Each DAC has a separate analog ground line, increasing device versatility and allowing for different configurations.
- Asynchronous CLR Line: Useful in calibration routines, clears all registers when taken low.
- High Precision: Guaranteed 12-bit monotonic over the full temperature range, with typical DAC to DAC matching of 0.5%.
- LC²MOS Process: Manufactured using Linear Compatible CMOS process, ensuring speed compatibility with most microprocessors and accepting various logic levels.
Applications
The AD7537KNZ is suitable for various applications requiring high precision and dual DAC functionality, such as:
- Industrial Control Systems: Where precise analog output control is necessary.
- Medical Devices: Requiring accurate and reliable analog signals.
- Aerospace and Defense: Applications demanding high reliability and precision.
- Automotive Systems: For control and monitoring systems that need dual analog outputs.
- Test and Measurement Equipment: Where dual DACs can be used to generate precise analog signals.
Q & A
- What is the resolution of the AD7537KNZ DACs?
The AD7537KNZ features two 12-bit DACs.
- What is the power supply range for the AD7537KNZ?
The device operates on a +12 V to +15 V power supply with ±10% tolerance.
- What logic levels does the AD7537KNZ support?
The AD7537KNZ accepts TTL, 74HC, and 5V CMOS logic level inputs.
- Does the AD7537KNZ have separate reference inputs for each DAC?
Yes, each DAC has a separate reference input.
- What is the purpose of the asynchronous CLR line?
The asynchronous CLR line clears all registers when taken low, useful in calibration routines.
- What are the available package options for the AD7537KNZ?
The device is available in 24-Lead PDIP, 28-Lead PLCC, and 24-Lead SOIC (Wide) packages.
- How does the double buffering feature work?
The double buffering allows simultaneous update of both DACs by transferring data from the input registers to the DAC registers using the UPD signal.
- What is the typical DAC to DAC matching for the AD7537KNZ?
The typical DAC to DAC matching is 0.5%.
- Is the AD7537KNZ compatible with most microprocessors?
Yes, it is speed compatible with most microprocessors due to its LC²MOS process.
- What is the significance of separate AGND lines for each DAC?
The separate AGND lines increase device versatility, allowing one DAC to be operated with AGND biased while the other is in the standard configuration.
