Overview
The AD5258BRMZ50-R7, produced by Analog Devices Inc., is a nonvolatile, 64-position digital potentiometer. This device offers a compact solution in a 10-lead MSOP package, measuring 3 mm × 4.9 mm. It performs the same electronic adjustment functions as mechanical potentiometers or variable resistors but with enhanced resolution and solid-state reliability. The AD5258 is controlled through an I2C-compatible digital interface, allowing for precise adjustment and reading of the wiper register and EEPROM content.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Power Supply Range | VDD | 2.7 | 5.5 | V | ||
| Logic Supply Range | VLOGIC | 2.7 | 5.5 | V | ||
| Positive Supply Current | IDD | 0.5 | 2 | µA | ||
| Logic Supply Current | ILOGIC | VIH = 5 V or VIL = 0 V | 3 | 6 | µA | |
| Operating Temperature | TA | −40°C | +85°C | °C | ||
| End-to-End Resistance | RAB | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | Ω | |||
| Resistance Tolerance | 0.1% | % | ||||
| Power-on EEPROM Refresh Time | <1 ms | ms |
Key Features
- Nonvolatile memory maintains wiper settings.
- 64-position digital potentiometer with I2C-compatible interface.
- Compact MSOP-10 package (3 mm × 4.9 mm).
- 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.
- 100-year typical data retention at 55°C.
- 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 AD5258BRMZ50-R7 used for? The AD5258BRMZ50-R7 is used as a digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications.
- What is the package type of the AD5258BRMZ50-R7? The AD5258BRMZ50-R7 comes in a 10-lead MSOP package.
- What is the operating temperature range of the AD5258BRMZ50-R7? The operating temperature range is −40°C to +85°C.
- How many positions does the AD5258BRMZ50-R7 digital potentiometer have? It has 64 positions.
- What interface does the AD5258BRMZ50-R7 use? It uses an I2C-compatible digital interface.
- What is the resistance tolerance of the AD5258BRMZ50-R7? The resistance tolerance is stored in EEPROM with 0.1% accuracy.
- Can multiple AD5258BRMZ50-R7 devices be used on the same bus? Yes, up to four devices can be used on the same bus using Address Decode Pins AD0 and AD1.
- What is the power-on EEPROM refresh time of the AD5258BRMZ50-R7? The power-on EEPROM refresh time is less than 1 ms.
- Does the AD5258BRMZ50-R7 have a software write protect feature? Yes, it has a software write protect command to secure EEPROM data.
- What are some common applications of the AD5258BRMZ50-R7? Common applications include LCD panel adjustments, programmable power supplies, RF amplifier biasing, and automotive electronics adjustment.
