Overview
The AD5421CREZ-RL7 is a precision digital-to-analog converter (DAC) manufactured by Analog Devices, Inc. This component offers high performance and versatility, making it suitable for a wide range of applications. It features a 16-bit resolution and operates from a single supply voltage, enhancing its suitability for industrial, automotive, and instrumentation applications.
The AD5421CREZ-RL7 is designed to meet the needs of smart transmitter manufacturers in the industrial control industry, providing a high-precision, fully integrated, and low-cost solution in compact TSSOP and LFCSP packages.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Bits | 16 | - | - |
| Number of D/A Converters | 1 | - | - |
| Settling Time | 50 μs | Typical | - |
| Output Type | Current – Buffered | - | - |
| Differential Output | No | - | - |
| Data Interface | SPI, DSP | - | - |
| Reference Type | External, Internal | - | - |
| Voltage-Supply Analog | 1.71 V ~ 5.5 V | - | - |
| Voltage-Supply Digital | 3.17 V ~ 3.48 V | - | - |
| INL/DNL (LSB) | ±1 (Max) | - | - |
| Architecture | Cyclic Serial | - | - |
| Operating Temperature | -40°C ~ 105°C | - | - |
| Total Unadjusted Error (TUE) | 0.05% (Max) | % FSR | - |
| Integral Nonlinearity (INL) | 0.0035% (Max) | % FSR | - |
| Output Temperature Coefficient (TC) | 3 ppm/°C (Typical) | - | - |
| Quiescent Current | 300 μA (Max) | - | - |
Key Features
- High Precision: The AD5421CREZ-RL7 offers high precision with 16-bit resolution, ensuring accurate analog signal generation.
- Flexible Interface: It features a SPI-compatible serial digital interface with Schmitt triggered inputs, allowing for easy connection to microprocessors and microcontrollers.
- Integrated Reference and Voltage Regulator: The component includes on-chip references (1.22 V and 2.5 V) and a regulated voltage output, eliminating the need for discrete regulators and voltage references.
- Fault Alerts and Readback: It provides on-chip fault alerts via the FAULT pin or alarm current and automatic readback of the fault register on each write cycle.
- Slew Rate Control and Gain/Offset Adjustment: The DAC includes slew rate control and gain and offset adjustment registers, enhancing flexibility in system design.
- Compact Packaging: Available in 28-lead TSSOP and 32-lead LFCSP packages, making it suitable for space-constrained applications.
- Wide Operating Temperature Range: Operates over an extended industrial temperature range of -40°C to 105°C.
Applications
- Industrial Process Control: Suitable for precise control and monitoring in industrial automation, including motor control, sensor calibration, and programmable logic controllers (PLCs).
- Smart Transmitters: Designed to meet the needs of smart transmitter manufacturers, supporting 4 mA to 20 mA loop-powered transmitters and HART network connectivity.
- Automotive and Instrumentation: Its high resolution and low noise characteristics make it ideal for various automotive and instrumentation applications demanding accurate analog output.
- IOT and Smart Sensors: Compatible with IoT devices and smart sensors, enabling advanced control and automation systems.
Q & A
- What is the resolution of the AD5421CREZ-RL7 DAC?
The AD5421CREZ-RL7 has a 16-bit resolution.
- What is the typical settling time of the AD5421CREZ-RL7?
The typical settling time is 50 μs.
- What types of interfaces does the AD5421CREZ-RL7 support?
The AD5421CREZ-RL7 supports SPI and DSP interfaces.
- What is the operating temperature range of the AD5421CREZ-RL7?
The operating temperature range is -40°C to 105°C.
- Does the AD5421CREZ-RL7 have integrated references and voltage regulators?
Yes, it includes on-chip references (1.22 V and 2.5 V) and a regulated voltage output.
- What are some common applications of the AD5421CREZ-RL7?
Common applications include industrial process control, smart transmitters, automotive, and instrumentation.
- What is the total unadjusted error (TUE) of the AD5421CREZ-RL7?
The total unadjusted error (TUE) is 0.05% maximum.
- Does the AD5421CREZ-RL7 support HART network connectivity?
Yes, it supports HART network connectivity without any degradation in specified performance.
- What is the quiescent current of the AD5421CREZ-RL7?
The quiescent current is 300 μA maximum.
- What are the package options for the AD5421CREZ-RL7?
The component is available in 28-lead TSSOP and 32-lead LFCSP packages.
