Overview
The AD5274BRMZ-100, 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 AD5272/AD5274 series, which is known for its industry-leading low resistor tolerance error and precision calibration capabilities. The AD5274BRMZ-100 is available in a compact 10-lead MSOP package and operates over an extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 256 positions | - |
| Nominal Resistance | 100 kΩ | Ω |
| 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 | I²C-compatible | - |
| 50-TP Memory | 50-times programmable wiper memory | - |
| Package | 10-lead MSOP | - |
| Operating Temperature | −40°C to +125°C | °C |
Key Features
- Single-channel, 256-position digital rheostat with nonvolatile memory (NVM)
- High precision with less than 1% end-to-end resistor tolerance error
- 50-times programmable (50-TP) wiper memory for permanent settings
- I²C-compatible digital interface for easy control and readback of wiper settings
- Compact 10-lead MSOP package
- Extended industrial temperature range operation: −40°C to +125°C
- Selectable address for multiple device operation on the same bus
- No external voltage supply required for fuse blow and permanent programming
Applications
- Precision calibration and tolerance matching applications
- Open-loop applications requiring high accuracy and stability
- Industrial control systems where precise resistance adjustment is necessary
- Aerospace and defense applications requiring high reliability and precision
- Medical devices and equipment needing accurate and stable resistance settings
Q & A
- What is the resolution of the AD5274BRMZ-100?
The AD5274BRMZ-100 has a resolution of 256 positions.
- What are the nominal resistance values available for the AD5274 series?
The AD5274 series is available with nominal resistances of 20 kΩ, 50 kΩ, and 100 kΩ.
- What is the temperature coefficient of the AD5274BRMZ-100 in rheostat mode?
The temperature coefficient in rheostat mode is 5 ppm/°C.
- What type of interface does the AD5274BRMZ-100 use?
The AD5274BRMZ-100 uses an I²C-compatible digital interface.
- How many times can the wiper position be programmed permanently?
The wiper position can be programmed permanently 50 times (50-TP memory).
- What is the operating temperature range of the AD5274BRMZ-100?
The operating temperature range is −40°C to +125°C.
- Does the AD5274BRMZ-100 require an external voltage supply for permanent programming?
No, the AD5274BRMZ-100 does not require an external voltage supply for permanent programming.
- Can multiple AD5274 devices be used on the same I²C bus?
- What is the package type of the AD5274BRMZ-100?
The AD5274BRMZ-100 is available in a 10-lead MSOP package.
- What are some typical applications of the AD5274BRMZ-100?
Typical applications include precision calibration, open-loop systems, industrial control, aerospace, and medical devices.
