AD421BRZRL7

The AD421BRZRL7 is a complete, loop-powered, digital-to-4 mA to 20 mA converter designed specifically to meet the needs of smart transducer manufacturers in the industrial control industry. It provides a high-precision, fully integrated, and low-cost solution in a compact 16-pin package.

Key Features:

1. High Precision and Resolution: The AD421BRZRL7 offers a 16-bit resolution, ensuring high accuracy in digital-to-analog conversion. This makes it suitable for applications requiring precise control and measurement.
2. Loop-Powered Design: The device is loop-powered, meaning it can operate using the current loop itself as its power source. This eliminates the need for an external power supply, simplifying the overall system design and reducing costs.
3. Programmable Output Range: The AD421BRZRL7 has a programmable output range of 4 mA to 20 mA, providing flexibility in setting the desired output current based on specific application requirements.
4. On-Chip Voltage References and Regulator: The device includes on-chip +1.25 V and +2.5 V precision voltage references, as well as a programmable voltage regulator that can provide +3 V, +3.3 V, or +5 V output. This eliminates the need for external voltage references and regulators, further reducing system complexity and cost.
5. HART Compatibility: The AD421BRZRL7 is compatible with the HART FSK protocol, allowing for digital communication over the 4 mA to 20 mA current loop. This enables remote monitoring, configuration, and diagnostics of the transducer, improving system reliability and maintenance efficiency.
6. Flexible Serial Interface: The device features a flexible serial interface that can operate at speeds up to 10 Mbps, allowing for easy connection to microprocessors and microcontrollers. This interface supports standard three-wire serial communication, making integration with existing systems straightforward.
7. Compact Package: The AD421BRZRL7 is available in a compact 16-pin SOIC or PDIP package, making it suitable for use in space-constrained applications.
8. Industrial Temperature Range: The device is rated for operation over a temperature range of -40°C to +85°C, ensuring reliable performance in harsh industrial environments.

Applications:

The AD421BRZRL7 is ideal for use in industrial control systems, smart transducers, and other applications requiring high-precision digital-to-analog conversion and loop-powered operation. Its compact size, high precision, and compatibility with the HART protocol make it an excellent choice for these applications.

Overall, the AD421BRZRL7 is a versatile and reliable device that offers a high-performance solution for digital-to-analog conversion in industrial control systems.