Overview
The AD5258BRMZ1, produced by Analog Devices Inc., is a nonvolatile digital potentiometer designed to provide a compact and reliable solution for 64-position adjustment applications. This device functions similarly to mechanical potentiometers or variable resistors but offers enhanced resolution and solid-state reliability. It is packaged in a 10-lead MSOP (3 mm × 4.9 mm) and features an I2C-compatible digital interface for controlling and reading back the wiper settings and EEPROM content.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resistance Range | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | - |
| Number of Taps | 64 | - |
| Interface | I2C-compatible | - |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Logic Supply Range | 2.7 V to 5.5 V | V |
| Operating Temperature | −40°C to +85°C | °C |
| Resistance Tolerance | 0.1% accuracy | % |
| Power-on EEPROM Refresh Time | <1 ms | ms |
| Data Retention | 100 years at 55°C | - |
| Package Type | 10-Lead MSOP | - |
Key Features
- Nonvolatile memory maintains wiper settings.
- Compact MSOP-10 package (3 mm × 4.9 mm).
- I2C-compatible digital interface for control and read-back of wiper settings and EEPROM content.
- VLOGIC pin provides increased interface flexibility.
- Resistance tolerance stored in EEPROM with 0.1% accuracy.
- Software write protect command to secure EEPROM data.
- Address Decode Pins AD0 and AD1 allow up to four devices on the same bus.
- Wide operating temperature range: −40°C to +85°C.
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.
- Electronics level settings.
Q & A
- What is the primary function of the AD5258BRMZ1?
The AD5258BRMZ1 functions as a nonvolatile digital potentiometer, providing 64-position adjustment similar to mechanical potentiometers but with enhanced resolution and solid-state reliability.
- What is the interface used for controlling the AD5258BRMZ1?
The device uses an I2C-compatible digital interface for controlling and reading back the wiper settings and EEPROM content.
- What are the available resistance ranges for the AD5258BRMZ1?
The resistance ranges available are 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating temperature range of the AD5258BRMZ1?
The operating temperature range is −40°C to +85°C.
- How many devices can be connected on the same bus using the AD5258BRMZ1?
Up to four devices can be connected on the same bus using the Address Decode Pins AD0 and AD1.
- What is the data retention time for the AD5258BRMZ1 at 55°C?
The data retention time is 100 years at 55°C.
- What is the purpose of the VLOGIC pin in the AD5258BRMZ1?
The VLOGIC pin provides increased interface flexibility.
- How accurate is the resistance tolerance stored in the EEPROM of the AD5258BRMZ1?
The resistance tolerance stored in the EEPROM has an accuracy of 0.1%.
- What is the power-on EEPROM refresh time for the AD5258BRMZ1?
The power-on EEPROM refresh time is less than 1 ms.
- What are some common applications of the AD5258BRMZ1?
Common applications include LCD panel adjustments, mechanical potentiometer replacement, programmable power supplies, RF amplifier biasing, and automotive electronics adjustment.
