Overview
The AD5258BRMZ100-R7, produced by Analog Devices Inc., is a digital potentiometer that offers a compact, nonvolatile solution for 64-position adjustment applications. This device functions similarly to mechanical potentiometers or variable resistors but with enhanced resolution and solid-state reliability. It features an I2C-compatible digital interface for controlling and reading back wiper settings and EEPROM content. The AD5258 is packaged in a 10-MSOP form factor, making it suitable for a variety of applications requiring precise digital adjustment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resistance Range | 100 kΩ | Ω |
| Number of Taps | 64 | - |
| Interface | I2C | - |
| Power Supply Range | 2.7 to 5.5 | V |
| Logic Supply Range | 2.7 to 5.5 | V |
| Operating Temperature | −40°C to +85°C | °C |
| Resistance Tolerance | 0.1% | - |
| Package Type | 10-MSOP | - |
| Positive Supply Current (IDD) | 0.5 to 2 µA | µA |
| Logic Supply Current (ILOGIC) | 3 to 6 µA (−40°C < TA < 85°C) | µA |
Key Features
- Nonvolatile memory with 100-year typical data retention at 55°C.
- Software write protection to prevent unauthorized changes.
- Address Decode Pins (AD0 and AD1) allowing up to four devices on the same bus.
- A separate VLOGIC pin for increased interface flexibility.
- Power-on EEPROM refresh time of less than 1 ms.
- Enhanced resolution and solid-state reliability compared to mechanical potentiometers.
Applications
- LCD panel VCOM adjustment and brightness/contrast control.
- Mechanical potentiometer replacement in new designs.
- Programmable power supplies.
- RF amplifier biasing.
- Automotive electronics adjustment.
- Gain control and offset adjustment.
- Fiber to the home systems and other electronic level settings.
Q & A
- What is the primary function of the AD5258BRMZ100-R7? The AD5258BRMZ100-R7 is a digital potentiometer that provides a nonvolatile, 64-position adjustment solution, similar to mechanical potentiometers but with enhanced resolution and reliability.
- What interface does the AD5258BRMZ100-R7 use? The AD5258BRMZ100-R7 uses an I2C-compatible digital interface.
- What is the resistance range of the AD5258BRMZ100-R7? The resistance range of the AD5258BRMZ100-R7 is 100 kΩ.
- How many taps does the AD5258BRMZ100-R7 have? The AD5258BRMZ100-R7 has 64 taps.
- What is the operating temperature range of the AD5258BRMZ100-R7? The operating temperature range is −40°C to +85°C.
- What is the package type of the AD5258BRMZ100-R7? The package type is 10-MSOP.
- Does the AD5258BRMZ100-R7 support multiple devices on the same bus? Yes, it supports up to four devices on the same bus using Address Decode Pins (AD0 and AD1).
- What is the power-on EEPROM refresh time of the AD5258BRMZ100-R7? The power-on EEPROM refresh time is less than 1 ms.
- What is the typical data retention time of the AD5258BRMZ100-R7 at 55°C? The typical data retention time is 100 years at 55°C.
- Does the AD5258BRMZ100-R7 have software write protection? Yes, it has a software write protection feature to prevent unauthorized changes to the EEPROM.
