Overview
The AD5259BRMZ5-R7, produced by Analog Devices Inc., is a nonvolatile digital potentiometer that offers a compact and reliable solution for 256-position adjustment applications. This device is available in a 10-lead MSOP package and operates within a wide temperature range of −40°C to +125°C. It is designed to replace mechanical potentiometers or variable resistors with enhanced resolution and solid-state reliability. The AD5259 performs electronic adjustment functions through an I2C-compatible digital interface, ensuring precise control and readability of the wiper register and EEPROM content.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| End-to-end Resistance | RAB | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | Ω | |||
| Resistance Tolerance | 0.1% | % | ||||
| Power Supply Range | VDD | 2.7 V | 5.5 V | V | ||
| Logic Supply Range | VLOGIC | 2.7 V | 5.5 V | V | ||
| Operating Temperature | TA | −40°C | +125°C | °C | ||
| Power-on EEPROM Refresh Time | < 1 ms | ms | ||||
| Data Retention | 100 years (at 55°C) | years |
Key Features
- Nonvolatile memory maintains wiper settings.
- 256-position digital potentiometer.
- Compact MSOP-10 (3 mm × 4.9 mm × 1.1 mm) package.
- I2C-compatible digital interface.
- VLOGIC pin for increased interface flexibility.
- Address Decode Pins AD0 and AD1 allow up to four devices on the same bus.
- Software write protect command.
- Wide operating temperature range: −40°C to +125°C.
- Single supply operation: 3 V to 5 V.
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 AD5259BRMZ5-R7?
The AD5259BRMZ5-R7 is a nonvolatile digital potentiometer that provides 256-position adjustment, replacing mechanical potentiometers or variable resistors with enhanced resolution and solid-state reliability.
- What are the available package options for the AD5259?
The AD5259 is available in both LFCSP-10 (3 mm × 3 mm × 0.8 mm) and MSOP-10 (3 mm × 4.9 mm × 1.1 mm) packages.
- What is the operating temperature range of the AD5259BRMZ5-R7?
The operating temperature range is −40°C to +125°C.
- How does the AD5259BRMZ5-R7 interface with other devices?
The device uses an I2C-compatible digital interface and includes a VLOGIC pin for increased interface flexibility.
- Can multiple AD5259 devices be used on the same bus?
- What is the accuracy of the resistance tolerance stored in EEPROM?
The resistance tolerance stored in EEPROM has an accuracy of 0.1%.
- How long does it take for the EEPROM to refresh on power-up?
The power-on EEPROM refresh time is less than 1 ms.
- What is the typical data retention period for the AD5259BRMZ5-R7?
The typical data retention period is 100 years at 55°C.
- Does the AD5259BRMZ5-R7 support software write protection?
- What are some common applications of the AD5259BRMZ5-R7?
COM adjustment, mechanical potentiometer replacement, programmable power supplies, RF amplifier biasing, and automotive electronics adjustment.
