Overview
The AD7537JNZ, 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 AD7537JNZ features two independent DACs, each with its own reference input, which helps in saving valuable board space and ensures excellent thermal tracking due to its monolithic construction. Both DACs are guaranteed to be 12-bit monotonic over the full temperature range, ensuring reliable performance in diverse environmental conditions.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 12 bits |
| Output Type | Current output |
| Power Supply | +12 V to +15 V, ±10% tolerance |
| Package Types | 24-Lead PDIP, 28-Lead PLCC, 24-Lead SOIC (Wide) |
| Data Loading Structure | 2-byte (8 LSBs, 4 MSBs), right-justified data format |
| Control Signals | A0, A1, CS, WR, UPD |
| DAC to DAC Matching | Typical matching: 0.5% |
| Logic Compatibility | TTL, 74HC, 5 V CMOS logic level inputs |
| Analog Ground | Separate AGND lines for each DAC |
Key Features
- Dual 12-Bit DACs: Two independent DACs on a single chip, saving board space and ensuring excellent thermal tracking.
- Separate Reference Inputs: Each DAC has its own reference input, enhancing versatility and application range.
- Asynchronous CLR Line: Useful in calibration routines, clears all registers when taken low.
- Double Buffering: Allows simultaneous update of both DACs.
- Separate AGND Lines: Each DAC has its own analog ground line, increasing device versatility.
- LC²MOS Process: Manufactured using Linear Compatible CMOS process, ensuring speed compatibility with most microprocessors.
- Wide Power Supply Tolerance: Operates on a +12 V to +15 V power supply with ±10% tolerance.
Applications
- Automatic Test Equipment: Ideal for precision and reliability in testing environments.
- Programmable Filters: Used in filter applications where precise control over filter characteristics is required.
- Audio Applications: Suitable for audio systems requiring high precision and low distortion.
- Synchro Applications: Used in synchro systems for precise angle measurement and control.
- Process Control: Employed in process control systems for accurate and reliable control of processes.
Q & A
- What is the resolution of the AD7537JNZ DAC?
The AD7537JNZ has a resolution of 12 bits for each DAC.
- What are the power supply requirements for the AD7537JNZ?
The device operates on a +12 V to +15 V power supply with ±10% tolerance.
- What is the significance of the asynchronous CLR line in the AD7537JNZ?
The asynchronous CLR line is useful in calibration routines and clears all registers when taken low.
- Does the AD7537JNZ support simultaneous update of both DACs?
Yes, the double buffering feature allows simultaneous update of both DACs.
- What are the typical applications of the AD7537JNZ?
The AD7537JNZ is used in automatic test equipment, programmable filters, audio applications, synchro applications, and process control systems.
- What is the logic compatibility of the AD7537JNZ?
The device is compatible with TTL, 74HC, and 5 V CMOS logic level inputs.
- How does the AD7537JNZ save board space?
The AD7537JNZ integrates two 12-bit DACs into a single chip, saving valuable board space.
- What is the significance of separate AGND lines for each DAC?
The separate AGND lines increase the device versatility, allowing one DAC to be operated with AGND biased while the other is connected in the standard configuration.
- What is the typical matching between the two DACs on the AD7537JNZ?
The typical matching between the two DACs is 0.5%.
- What is the data loading structure of the AD7537JNZ?
The device has a 2-byte (8 LSBs, 4 MSBs) loading structure and is designed for right-justified data format.
