Overview
The AD5271BRMZ-20-RL7, produced by Analog Devices Inc., is a single-channel digital rheostat that offers high-performance variable resistor functionality combined with nonvolatile memory (NVM). This device is part of the AD5270/AD5271 series, which is known for its industry-leading low resistor tolerance error and compact packaging. The AD5271BRMZ-20-RL7 is particularly suited for applications requiring precise and stable resistance adjustments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 256 positions | - |
| Nominal Resistance | 20 kΩ | kΩ |
| Nominal Resistor Tolerance Error | ±1% | % |
| Temperature Coefficient (Rheostat Mode) | 5 ppm/°C | ppm/°C |
| Supply Voltage (Single-Supply) | 2.7 V to 5.5 V | V |
| Supply Voltage (Dual-Supply) | ±2.5 V to ±2.75 V | V |
| Interface | SPI-compatible | - |
| Package | 10-lead MSOP (3 mm × 4.9 mm × 1.1 mm) | - |
| Operating Temperature Range | −40°C to +125°C | °C |
| Memory Type | 50-times programmable (50-TP) nonvolatile memory | - |
Key Features
- Single-channel, 256-position digital rheostat with high-resolution variable resistor performance.
- Low resistor tolerance error of ±1%, ensuring high precision in applications.
- 50-times programmable (50-TP) nonvolatile memory for permanent wiper setting storage.
- SPI-compatible digital interface for easy control and readback of wiper settings.
- Compact 10-lead MSOP package, suitable for space-constrained designs.
- Extended industrial temperature range operation from −40°C to +125°C.
- No external voltage supply required for fuse blow and permanent programming.
Applications
- Mechanical potentiometer replacements.
- Op-amp variable gain control.
- Instrumentation: gain and offset adjustments.
- Programmable voltage-to-current conversions.
- Programmable filters, delays, and time constants.
- Programmable power supply adjustments.
- Sensor calibration.
Q & A
- What is the resolution of the AD5271BRMZ-20-RL7?
The AD5271BRMZ-20-RL7 has a resolution of 256 positions.
- What are the nominal resistance values available for the AD5271?
The AD5271 is available with nominal resistances of 20 kΩ, 50 kΩ, and 100 kΩ.
- What is the temperature coefficient of the AD5271 in rheostat mode?
The temperature coefficient in rheostat mode is 5 ppm/°C.
- What type of interface does the AD5271 use?
The AD5271 uses an SPI-compatible digital interface.
- What is the operating temperature range of the AD5271?
The operating temperature range is from −40°C to +125°C.
- Does the AD5271 require an external voltage supply for permanent programming?
No, the AD5271 does not require an external voltage supply for fuse blow and permanent programming.
- What is the memory type of the AD5271?
The AD5271 features 50-times programmable (50-TP) nonvolatile memory.
- What are some common applications of the AD5271?
Common applications include mechanical potentiometer replacements, op-amp variable gain control, instrumentation adjustments, and programmable voltage-to-current conversions.
- What package options are available for the AD5271?
The AD5271 is available in 10-lead LFCSP and 10-lead MSOP packages.
- How many times can the wiper setting be programmed permanently?
The wiper setting can be programmed permanently up to 50 times.
