Overview
The AD5259BCPZ5-R7, produced by Analog Devices Inc., is a nonvolatile digital potentiometer designed for 256-position adjustment applications. This device is available in compact LFCSP-10 (3 mm x 3 mm) and MSOP-10 (3 mm x 4.9 mm) packages, offering enhanced resolution and solid-state reliability compared to mechanical potentiometers or variable resistors. It performs the same electronic adjustment functions but with the advantages of digital control and nonvolatile memory.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | LFCSP-10 or MSOP-10 | 3 mm x 3 mm or 3 mm x 4.9 mm |
| Positions | 256-position adjustment | - |
| End-to-End Resistance | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | - |
| Resistance Tolerance | Stored in EEPROM (0.1% accuracy) | 0.1% |
| Interface | I2C-compatible digital interface | - |
| VLOGIC Pin | Logic power supply for increased interface flexibility | 2.7 V to 5.5 V |
| Power Supply Range | VDD | 2.7 V to 5.5 V |
| Operating Temperature | -40°C to +125°C | - |
| Data Retention | Typical 100-year data retention at 55°C | - |
| Address Decode Pins | AD0 and AD1 for multiple package decoding | - |
Key Features
- Nonvolatile memory maintains wiper settings.
- Compact LFCSP-10 and MSOP-10 packages.
- I2C-compatible digital interface for wiper control and EEPROM access.
- 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 for EEPROM.
- Power-on EEPROM refresh time less than 1 ms.
- Wide operating temperature range: -40°C to +125°C.
- Typical 100-year data retention at 55°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 AD5259BCPZ5-R7 used for?
The AD5259BCPZ5-R7 is used for 256-position adjustment applications, replacing mechanical potentiometers or variable resistors with enhanced resolution and solid-state reliability.
- What are the available package types for the AD5259BCPZ5-R7?
The device is available in LFCSP-10 (3 mm x 3 mm) and MSOP-10 (3 mm x 4.9 mm) packages.
- What is the interface type used by the AD5259BCPZ5-R7?
The device uses an I2C-compatible digital interface.
- What is the significance of the VLOGIC pin?
The VLOGIC pin provides increased interface flexibility by allowing a separate logic power supply.
- How many devices can be connected on the same bus using the AD5259BCPZ5-R7?
Up to four devices can be connected on the same bus using the Address Decode Pins (AD0 and AD1).
- What is the power supply range for the AD5259BCPZ5-R7?
The power supply range is from 2.7 V to 5.5 V.
- What is the operating temperature range of the AD5259BCPZ5-R7?
The operating temperature range is from -40°C to +125°C.
- How long does the EEPROM retain data?
The EEPROM typically retains data for 100 years at 55°C.
- What is the purpose of the software write protect command?
The software write protect command is used to protect the EEPROM content from unauthorized changes.
- How quickly does the EEPROM refresh on power-up?
The EEPROM refresh time on power-up is less than 1 ms.
