Overview
The AD5421BREZ-REEL7 is a 16-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This component is designed to meet the needs of smart transmitter manufacturers, particularly in industrial control and automation systems. It operates as a loop-powered DAC, converting digital signals into 4 mA to 20 mA analog current outputs, which is a standard in many industrial control applications.
The AD5421BREZ-REEL7 features a serial input interface compatible with SPI and DSP bus protocols, operating over a wide voltage range from 1.71 V to 5.5 V and 3.17 V to 3.48 V, respectively. It is packaged in a 28-pin HTSSOP-EP package and is compliant with RoHS standards.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 16 Bits | ||||
| Total Unadjusted Error (TUE) | -0.126% | +0.126% | % FSR | C grade, TA = 25°C | |
| Output Voltage Range | 1.8 V | 12 V | V | See Table 10 | |
| Output Voltage Accuracy | -4% | +4% | % | Externally Available Current | |
| Load Regulation | 0.1 mV/mA | 0.2 mV/mA | mV/mA | Measured at 0 mA and 1 mA loads | |
| Output Impedance | 0.1 Ω | Ω | |||
| REFOUT2 Pin Output Voltage | 1.18 V | 1.227 V | 1.28 V | V | TA = 25°C |
| Package Type | HTSSOP-28-EP |
Key Features
- Loop-Powered Operation: The AD5421BREZ-REEL7 operates as a loop-powered DAC, converting digital signals into 4 mA to 20 mA analog current outputs, making it suitable for industrial control applications.
- Serial Input Interface: Compatible with SPI and DSP bus protocols, operating over a wide voltage range from 1.71 V to 5.5 V and 3.17 V to 3.48 V, respectively.
- High Accuracy: Offers high accuracy with total unadjusted error (TUE) of ±0.126% FSR for C grade and ±0.041% FSR at 25°C for C grade.
- Internal Power-On Reset and Latch: Features an internal power-on reset circuit and a power-on latch for reliable startup and operation.
- ROHS Compliance: The component is compliant with RoHS standards, ensuring environmental sustainability.
- Wide Output Voltage Range: The output voltage range is from 1.8 V to 12 V, making it versatile for various applications.
Applications
- Industrial Control Systems: Ideal for smart transmitter applications in industrial control systems where precise analog current outputs are required.
- Process Control: Used in process control systems that require accurate and reliable conversion of digital signals to analog current outputs.
- Automation Systems: Suitable for automation systems that need high-accuracy DACs for controlling various industrial processes.
- Instrumentation: Applied in instrumentation where precise analog outputs are necessary for measurement and control purposes.
Q & A
- What is the resolution of the AD5421BREZ-REEL7?
The AD5421BREZ-REEL7 has a resolution of 16 bits.
- What is the output current range of the AD5421BREZ-REEL7?
The output current range is from 4 mA to 20 mA.
- What are the operating voltage ranges for the serial input interface?
The serial input interface operates over a wide voltage range from 1.71 V to 5.5 V and 3.17 V to 3.48 V, respectively.
- What is the package type of the AD5421BREZ-REEL7?
The component is packaged in a 28-pin HTSSOP-EP package.
- Is the AD5421BREZ-REEL7 RoHS compliant?
Yes, the AD5421BREZ-REEL7 is compliant with RoHS standards.
- What is the total unadjusted error (TUE) of the AD5421BREZ-REEL7?
The total unadjusted error (TUE) is ±0.126% FSR for C grade and ±0.041% FSR at 25°C for C grade.
- What are the typical applications of the AD5421BREZ-REEL7?
Typical applications include industrial control systems, process control, automation systems, and instrumentation.
- Does the AD5421BREZ-REEL7 have an internal power-on reset circuit?
Yes, it features an internal power-on reset circuit and a power-on latch.
- What is the output voltage range of the AD5421BREZ-REEL7?
The output voltage range is from 1.8 V to 12 V.
- How does the AD5421BREZ-REEL7 ensure reliable startup and operation?
It ensures reliable startup and operation through its internal power-on reset circuit and power-on latch.
