Overview
The AD421BR is a loop-powered, 16-bit digital-to-analog converter (DAC) designed and manufactured by Analog Devices Inc. This component is specifically tailored to meet the needs of smart transmitter manufacturers in industrial applications. It converts digital signals into analog currents in the range of 4 mA to 20 mA, making it highly suitable for precision data acquisition and control systems.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | AD421BR |
| Manufacturer | Analog Devices Inc. |
| Description | Loop-Powered 4 mA to 20 mA DAC |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Number of Pins | 16 |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 3V, 3.3V, 5V |
| Data Interface | MICROWIRE™, Serial |
| Resolution (Bits) | 16 b |
| Sampling Rate | 125 sps |
| Settling Time | 8 ms |
| Power Dissipation | 1.95 mW |
| Mounting Type | Surface Mount |
Key Features
- Loop-Powered Operation: The AD421BR operates using the 4 mA to 20 mA current loop, making it suitable for industrial control systems.
- High Precision: With a 16-bit resolution, this DAC provides high precision in converting digital signals to analog currents.
- Wide Operating Temperature Range: The component can operate over a temperature range of -40°C to 85°C, making it robust for various environmental conditions.
- Multiple Supply Voltages: It can be powered by 3V, 3.3V, or 5V supply voltages, offering flexibility in system design.
- Serial Data Interface: The MICROWIRE™ and serial interfaces enable easy communication with microcontrollers and other digital systems.
Applications
- Industrial Automation: The AD421BR is ideal for use in smart transmitters, process control systems, and other industrial automation applications.
- Data Acquisition Systems: Its high precision and reliability make it suitable for data acquisition systems requiring accurate analog output.
- Control Systems: It can be used in various control systems where precise analog signals are required to control actuators or other devices.
Q & A
- What is the primary function of the AD421BR?
The AD421BR is a loop-powered, 16-bit digital-to-analog converter that converts digital signals into analog currents in the range of 4 mA to 20 mA.
- What is the operating temperature range of the AD421BR?
The operating temperature range is -40°C to 85°C.
- What are the available supply voltages for the AD421BR?
The component can be powered by 3V, 3.3V, or 5V supply voltages.
- What is the resolution of the AD421BR?
The resolution is 16 bits.
- What is the sampling rate of the AD421BR?
The sampling rate is 125 samples per second (sps).
- What is the settling time of the AD421BR?
The settling time is 8 milliseconds.
- What type of data interface does the AD421BR use?
The AD421BR uses MICROWIRE™ and serial data interfaces.
- Is the AD421BR RoHS compliant?
No, the AD421BR is not RoHS compliant.
- What is the power dissipation of the AD421BR?
The power dissipation is 1.95 mW.
- What is the typical application of the AD421BR?
The AD421BR is typically used in industrial automation, data acquisition systems, and control systems.
