Overview
The AD5422BCPZ-REEL from Analog Devices Inc. is a low-cost, precision, fully integrated 16-bit digital-to-analog converter (DAC) designed to meet the requirements of industrial process control applications. This device offers a programmable current source and programmable voltage output, making it versatile for various industrial needs. The AD5422 is available in a 40-pin LFCSP package and is compliant with EU RoHS regulations.
The device features a flexible serial digital interface that is SPI- and MICROWIRE™-compatible, and it can operate in 3-wire mode to minimize digital isolation in isolated applications. It also includes on-chip output fault detection, an on-chip reference with a maximum drift of 10 ppm/°C, and an optional regulated DVCC output.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 16 Bits | ||||
| Voltage Output Ranges | 0 V | 5 V, 10 V, ±5 V, ±10 V | V | 10% overrange available | |
| Total Unadjusted Error (TUE) | -0.3% | 0.3% FSR | % FSR | TA = 25°C, B Version | |
| Output Drift | ±2 ppm FSR/°C | ppm FSR/°C | |||
| Current Output Ranges | 0 mA | 20 mA, 4 mA to 20 mA, 0 mA to 24 mA (overrange) | mA | ||
| Power Supply Range (AVDD) | 10.8 V | 40 V | V | ||
| Power Supply Range (AVSS) | -26.4 V | -3 V/0 V | V | ||
| Temperature Range | -40°C | +105°C | °C |
Key Features
- Programmable Current Source and Voltage Output: The AD5422 offers programmable current output ranges of 0 mA to 20 mA, 4 mA to 20 mA, and an overrange function of 0 mA to 24 mA. Voltage output ranges include 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V with a 10% overrange.
- Flexible Serial Digital Interface: Compatible with SPI and MICROWIRE™, and can operate in 3-wire mode for minimized digital isolation.
- On-Chip Output Fault Detection: Detects output faults and provides protection against short and open circuits.
- On-Chip Reference: Maximum drift of 10 ppm/°C.
- Optional Regulated DVCC Output: Provides a regulated digital supply voltage.
- Asynchronous Clear Function: Sets the device to a known state.
- HART Network Connectivity: Available in the LFCSP package, allowing HART signals to be coupled onto the current output.
Applications
- Process Control: Suitable for industrial process control applications due to its precision and programmable outputs.
- Actuator Control: Used in controlling actuators in various industrial settings.
- PLC (Programmable Logic Controllers): Compatible with PLC systems for industrial automation.
- HART Network Connectivity: Specifically designed for HART network applications, especially in the LFCSP package.
Q & A
- What is the resolution of the AD5422 DAC?
The AD5422 has a resolution of 16 bits.
- What are the voltage output ranges of the AD5422?
The voltage output ranges include 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V with a 10% overrange.
- What are the current output ranges of the AD5422?
The current output ranges are 0 mA to 20 mA, 4 mA to 20 mA, and an overrange function of 0 mA to 24 mA.
- What is the power supply range for the AD5422?
The power supply range for AVDD is 10.8 V to 40 V, and for AVSS is -26.4 V to -3 V/0 V.
- What is the temperature range for the AD5422?
The operating temperature range is -40°C to +105°C.
- Does the AD5422 support HART network connectivity?
Yes, the LFCSP package of the AD5422 supports HART network connectivity.
- What type of digital interface does the AD5422 use?
The AD5422 uses a flexible serial digital interface that is SPI- and MICROWIRE™-compatible.
- Does the AD5422 have on-chip output fault detection?
Yes, the AD5422 includes on-chip output fault detection and protection against short and open circuits.
- What is the maximum drift of the on-chip reference?
The maximum drift of the on-chip reference is 10 ppm/°C.
- Is the AD5422 compliant with EU RoHS regulations?
Yes, the AD5422 is compliant with EU RoHS regulations.
