Overview
The AD5144BRUZ100 is a digital potentiometer produced by Analog Devices Inc. This component is part of the AD5144 series, which offers a nonvolatile solution for 128-/256-position adjustment applications. It is designed to provide high precision and reliability, making it suitable for a variety of applications requiring adjustable resistance.
The device features a compact 20-lead TSSOP package and operates over an extended industrial temperature range of −40°C to +125°C. It supports both SPI and I2C-compatible digital interfaces, allowing for flexible integration into different systems.
Key Specifications
| Specification | Value |
|---|---|
| Resistance Options | 10 kΩ and 100 kΩ |
| Resistor Tolerance | ±8% maximum |
| Wiper Current | ±6 mA |
| Temperature Coefficient | 35 ppm/°C |
| Bandwidth | 3 MHz |
| Start-up Time | < 75 μs |
| Operating Temperature | −40°C to +125°C |
| Package Type | 20-Lead TSSOP |
| Interface | SPI-/I2C-compatible |
| Supply Voltage | 2.25 V to 5.5 V |
| Number of Positions | 256 |
| Memory Type | Non-Volatile |
Key Features
- Low resistor tolerance errors of ±8% and up to ±6 mA current density in the Ax, Bx, and Wx pins.
- Linear gain setting mode allowing independent programming of the resistance between the digital potentiometer terminals.
- High bandwidth of 3 MHz and low total harmonic distortion (THD) for optimal performance with ac signals.
- Fast start-up time of less than 75 μs.
- Single- and dual-supply operation with an independent logic supply from 1.8 V to 5.5 V.
- Compact 20-lead TSSOP package.
- Non-volatile memory to retain settings during power-off.
Applications
- Portable electronics level adjustment.
- LCD panel brightness and contrast controls.
- Programmable filters, delays, and time constants.
- Programmable power supplies.
- Defense and aerospace applications (AD5144-EP model supports AQEC standard).
Q & A
- What are the resistance options available for the AD5144BRUZ100?
The AD5144BRUZ100 offers resistance options of 10 kΩ and 100 kΩ.
- What is the maximum resistor tolerance of the AD5144BRUZ100?
The maximum resistor tolerance is ±8%.
- What is the wiper current rating of the AD5144BRUZ100?
The wiper current rating is ±6 mA.
- What is the temperature coefficient of the AD5144BRUZ100?
The temperature coefficient is 35 ppm/°C.
- What is the bandwidth of the AD5144BRUZ100?
The bandwidth is 3 MHz.
- How long does the AD5144BRUZ100 take to start up?
The start-up time is less than 75 μs.
- What is the operating temperature range of the AD5144BRUZ100?
The operating temperature range is −40°C to +125°C.
- What package type is the AD5144BRUZ100 available in?
The AD5144BRUZ100 is available in a 20-lead TSSOP package.
- What interfaces does the AD5144BRUZ100 support?
The AD5144BRUZ100 supports SPI- and I2C-compatible digital interfaces.
- What are some common applications of the AD5144BRUZ100?
Common applications include portable electronics level adjustment, LCD panel brightness and contrast controls, programmable filters, delays, and time constants, and programmable power supplies.
