Overview
The AD7237JNZ is a dual 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7237A/AD7247A series, which are enhanced versions of the industry-standard AD7237/AD7247. The AD7237JNZ features a complete DAC with output amplifiers and a Zener voltage reference integrated on a monolithic CMOS chip, eliminating the need for external user trims to achieve full specified performance. It is designed for high-speed data transfer and is microprocessor compatible, making it suitable for a variety of applications requiring precise analog output.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Settling Time | 10 μs |
| Data Interface | Parallel |
| Supply Voltage Range | 12 V to 15 V (dual supply), single supply operation also supported |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V (single supply); 0 V to +5 V, 0 V to +10 V, ±5 V (dual supply) |
| Output Amplifier Capability | +10 V across a 2 kΩ load to GND |
| Package Types | 24-pin DIP, 24-lead SOIC |
| Power Consumption | 165 mW (typical in single supply) |
Key Features
- Double buffered interface structure with an 8-bit wide data bus, allowing data to be loaded in two write operations.
- Asynchronous LDAC signal to update the DAC latches and analog outputs.
- REF OUT/REF IN function for using either the on-chip 5 V reference or an external reference voltage.
- High-speed data latches and interface logic, making it microprocessor compatible.
- Fabricated in Linear Compatible CMOS (LC²MOS) technology, combining precision bipolar circuits with low power CMOS logic.
Applications
The AD7237JNZ is suitable for various applications that require precise digital-to-analog conversion, such as:
- Industrial control systems.
- Aerospace and defense systems.
- Medical equipment.
- Automotive systems.
- Test and measurement instruments.
Q & A
- What is the resolution of the AD7237JNZ?
The AD7237JNZ has a resolution of 12 bits. - What is the settling time of the AD7237JNZ?
The settling time is 10 μs. - What type of data interface does the AD7237JNZ use?
The AD7237JNZ uses a parallel data interface. - What are the available output voltage ranges for the AD7237JNZ?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V (single supply), and 0 V to +5 V, 0 V to +10 V, ±5 V (dual supply). - Can the AD7237JNZ operate on a single supply?
Yes, the AD7237JNZ can operate on a single supply as well as dual supplies. - What is the power consumption of the AD7237JNZ in single supply operation?
The power consumption is typically 165 mW in single supply operation. - What package types are available for the AD7237JNZ?
The AD7237JNZ is available in 24-pin DIP and 24-lead SOIC packages. - Does the AD7237JNZ require external user trims for full performance?
No, the AD7237JNZ does not require external user trims to achieve full specified performance. - What technology is used in the fabrication of the AD7237JNZ?
The AD7237JNZ is fabricated in Linear Compatible CMOS (LC²MOS) technology. - Is the AD7237JNZ microprocessor compatible?
Yes, the AD7237JNZ is microprocessor compatible with high-speed data latches and interface logic.
