Overview
The AD5258BRMZ10-R7, produced by Analog Devices Inc., is a nonvolatile, I2C-compatible digital potentiometer. This device offers a compact solution for 64-position adjustment applications, replacing traditional mechanical potentiometers with enhanced resolution and solid-state reliability. It is packaged in a 10-lead MSOP (3 mm × 4.9 mm) and operates within a wide temperature range of −40°C to +85°C. The AD5258BRMZ10-R7 features a separate VLOGIC pin for increased interface flexibility and includes address decode pins (AD0 and AD1) that allow up to four devices on the same bus.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 10-Lead MSOP | 3 mm × 4.9 mm |
| Interface | I2C-compatible | - |
| Number of Taps | 64 positions | - |
| End-to-End Resistance | 10 kΩ (for this model) | - |
| Resistance Tolerance | ±30% | - |
| Memory Type | Non-Volatile EEPROM | - |
| Voltage Supply Range | 2.7 V to 5.5 V | - |
| Operating Temperature | −40°C to +85°C | - |
| Power-on EEPROM Refresh Time | < 1 ms | - |
| Data Retention | 100 years at 55°C | - |
Key Features
- Nonvolatile Memory: Maintains wiper settings even after power-off.
- I2C Interface: Allows for easy communication and control through an I2C-compatible digital interface.
- Selectable Address: Address decode pins (AD0 and AD1) enable up to four devices on the same bus.
- Software Write Protect: Ensures data cannot be written to the EEPROM register without authorization.
- Compact Packaging: 10-lead MSOP package with dimensions of 3 mm × 4.9 mm.
- High Accuracy: Resistance tolerance stored in EEPROM with 0.1% accuracy.
Applications
- LCD Panel Adjustments: VCOM adjustment, brightness, and contrast control.
- Mechanical Potentiometer Replacement: In new designs, offering enhanced resolution and reliability.
- Programmable Power Supplies: Adjustable voltage settings.
- RF Amplifier Biasing: Precise biasing for RF amplifiers.
- Automotive Electronics: Various adjustment needs in automotive systems.
- Gain and Offset Adjustment: In electronic circuits.
- Fiber to the Home Systems: Level settings and adjustments.
Q & A
- What is the primary function of the AD5258BRMZ10-R7?
The AD5258BRMZ10-R7 is a nonvolatile, I2C-compatible digital potentiometer that replaces mechanical potentiometers with enhanced resolution and solid-state reliability.
- What is the operating temperature range of the AD5258BRMZ10-R7?
The operating temperature range is −40°C to +85°C.
- How many positions does the AD5258BRMZ10-R7 digital potentiometer have?
The device has 64 positions.
- What is the end-to-end resistance of the AD5258BRMZ10-R7 model?
The end-to-end resistance for this model is 10 kΩ.
- What type of memory does the AD5258BRMZ10-R7 use?
The device uses non-volatile EEPROM memory.
- How long does it take for the EEPROM to refresh on power-on?
The power-on EEPROM refresh time is less than 1 ms.
- Can multiple AD5258BRMZ10-R7 devices be used on the same bus?
Yes, up to four devices can be used on the same bus using the address decode pins (AD0 and AD1).
- What is the typical data retention time at 55°C?
The typical data retention time at 55°C is 100 years.
- What is the purpose of the VLOGIC pin?
The VLOGIC pin provides increased interface flexibility.
- What are some common applications of the AD5258BRMZ10-R7?
Common applications include LCD panel adjustments, mechanical potentiometer replacement, programmable power supplies, RF amplifier biasing, and automotive electronics adjustments.
