Overview
The AD5270BRMZ-50, produced by Analog Devices Inc., is a single-channel digital rheostat that combines industry-leading variable resistor performance with nonvolatile memory (NVM) in a compact package. This device is part of the AD5270/AD5271 series, offering 1024-position resolution and a nominal resistance of 50 kΩ. It is designed to provide high precision and reliability, making it suitable for a variety of applications requiring adjustable resistance.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 1024 positions |
| Nominal Resistance | 50 kΩ |
| Resistor Tolerance Error | ±1% |
| Wiper Memory | 50-times programmable (50-TP) nonvolatile memory |
| Temperature Coefficient | 5 ppm/°C |
| Supply Voltage | 2.7 V to 5.5 V (single-supply), ±2.5 V to ±2.75 V (dual-supply) |
| Digital Interface | SPI-compatible |
| Package | 10-lead MSOP, 3 mm × 4.9 mm × 1.1 mm |
| Operating Temperature Range | −40°C to +125°C |
Key Features
- Single-channel, 1024-position digital rheostat with high precision and low resistor tolerance error.
- 50-times programmable (50-TP) nonvolatile memory for wiper settings.
- SPI-compatible digital interface for controlling wiper settings.
- Wiper setting readback capability.
- Power-on refresh from 50-TP memory.
- No external voltage supply required for fuse blow.
- Compact package options: 10-lead LFCSP and 10-lead MSOP.
Applications
- Mechanical potentiometer replacements.
- Op-amp: variable gain control.
- Instrumentation: gain and offset adjustment.
- Programmable voltage-to-current conversions.
- Programmable filters, delays, and time constants.
- Programmable power supply.
- Sensor calibration.
Q & A
- What is the resolution of the AD5270BRMZ-50?
The AD5270BRMZ-50 has a resolution of 1024 positions.
- What is the nominal resistance of the AD5270BRMZ-50?
The nominal resistance is 50 kΩ.
- What is the resistor tolerance error of the AD5270BRMZ-50?
The resistor tolerance error is ±1%.
- How many times can the wiper memory be programmed?
The wiper memory can be programmed 50 times (50-TP).
- What is the temperature coefficient of the AD5270BRMZ-50?
The temperature coefficient is 5 ppm/°C.
- What are the supply voltage options for the AD5270BRMZ-50?
The device operates with a single-supply voltage of 2.7 V to 5.5 V or a dual-supply voltage of ±2.5 V to ±2.75 V.
- What type of digital interface does the AD5270BRMZ-50 use?
The device uses an SPI-compatible digital interface.
- What package options are available for the AD5270BRMZ-50?
The device is available in a 10-lead MSOP package and a 10-lead LFCSP package.
- What is the operating temperature range of the AD5270BRMZ-50?
The operating temperature range is −40°C to +125°C.
- Does the AD5270BRMZ-50 require an external voltage supply for fuse blow?
No, the device does not require an external voltage supply for fuse blow.
