Overview
The AD5270BRMZ-100, 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 100 kΩ. It features a maximum ±1% nominal resistor tolerance error and 50-times programmable (50-TP) memory, making it ideal for applications requiring precise and stable resistance adjustments.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 1024 positions |
| Nominal Resistance | 100 kΩ |
| Resistor Tolerance Error | ±1% |
| Programmable Memory | 50-times programmable (50-TP) |
| 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) |
| Interface | SPI-compatible |
| Package | 10-lead MSOP (3 mm × 4.9 mm × 1.1 mm) |
| Operating Temperature Range | −40°C to +125°C |
| Max Junction Temperature | 150 °C |
Key Features
- Single-channel digital rheostat with 1024-position resolution
- Nonvolatile memory (NVM) for storing wiper settings
- 50-times programmable (50-TP) memory for permanent resistance settings
- SPI-compatible digital interface for wiper setting control and readback
- Low resistor tolerance error of ±1% and temperature coefficient of 5 ppm/°C
- Compact 10-lead MSOP package
- Operates over an extended industrial temperature range of −40°C to +125°C
Applications
- Mechanical rheostat 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-100?
The AD5270BRMZ-100 has a resolution of 1024 positions.
- What is the nominal resistance of the AD5270BRMZ-100?
The nominal resistance is 100 kΩ.
- What is the resistor tolerance error of the AD5270BRMZ-100?
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-100?
The temperature coefficient is 5 ppm/°C.
- What are the supply voltage ranges for the AD5270BRMZ-100?
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 interface does the AD5270BRMZ-100 use?
The device uses an SPI-compatible interface.
- What is the package type of the AD5270BRMZ-100?
The device is available in a 10-lead MSOP package.
- What is the operating temperature range of the AD5270BRMZ-100?
The operating temperature range is −40°C to +125°C.
- Can the AD5270BRMZ-100 be used in place of mechanical rheostats?
