Overview
The AD5254BRUZ50-RL7, produced by Analog Devices Inc., is a quad-channel, digitally controlled potentiometer with nonvolatile memory. This device offers 256-position resolution and is designed to replace traditional mechanical potentiometers, trimmers, and variable resistors, providing enhanced reliability and convenience. It features an I²C-compatible serial interface and operates within a single supply voltage range of 2.7 V to 5.5 V or dual supply voltage range of ±2.25 V to ±2.75 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| Resolution | 256 positions | - |
| Resistance Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | Ω |
| Interface | I²C | - |
| Supply Voltage (Single) | 2.7 V to 5.5 V | V |
| Supply Voltage (Dual) | ±2.25 V to ±2.75 V | V |
| Operating Temperature | –40°C to +105°C | °C |
| Package | 20-Lead TSSOP | - |
| Wiper Resistance | 75 Ω to 130 Ω (VDD = 5 V), 200 Ω to 300 Ω (VDD = 3 V) | Ω |
| Resistance Tolerance | −20% to +20% (at 25°C) | % |
| Resistance Temperature Coefficient | 650 ppm/°C | ppm/°C |
Key Features
- Nonvolatile memory stores wiper settings with write protection.
- Direct read/write access of RDAC and EEMEM registers.
- Predefined linear increment/decrement commands and ±6 dB step change commands.
- Synchronous or asynchronous quad-channel update.
- Wiper setting readback and extra EEMEM for user-defined information.
- Resistance tolerance stored in nonvolatile memory for precision applications.
Applications
- Mechanical potentiometer replacement.
- Low resolution DAC replacement.
- RGB LED backlight control and white LED brightness adjustment.
- RF base station power amp bias control.
- Programmable gain and offset control.
- Programmable attenuators and voltage-to-current conversion.
- Programmable power supply and filters.
- Sensor calibrations).
Q & A
- Q: What is the resolution of the AD5254BRUZ50-RL7?
A: The AD5254BRUZ50-RL7 has a resolution of 256 positions).
- Q: What are the available resistance values for the AD5254BRUZ50-RL7?
A: The available resistance values are 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ).
- Q: What is the operating temperature range of the AD5254BRUZ50-RL7?
A: The operating temperature range is –40°C to +105°C).
- Q: What type of interface does the AD5254BRUZ50-RL7 use?
A: The AD5254BRUZ50-RL7 uses an I²C-compatible serial interface).
- Q: What is the package type of the AD5254BRUZ50-RL7?
A: The package type is 20-Lead TSSOP).
- Q: What is the warranty period for the AD5254BRUZ50-RL7 from Ovaga?
A: Ovaga offers a 1-year warranty on the AD5254BRUZ50-RL7).
- Q: How does the AD5254BRUZ50-RL7 store wiper settings?
A: The AD5254BRUZ50-RL7 stores wiper settings in nonvolatile memory with write protection).
- Q: What are some common applications of the AD5254BRUZ50-RL7?
A: Common applications include mechanical potentiometer replacement, low resolution DAC replacement, RGB LED backlight control, and more).
- Q: Can the AD5254BRUZ50-RL7 be used in synchronous or asynchronous mode?
A: Yes, the AD5254BRUZ50-RL7 can operate in both synchronous and asynchronous quad-channel update modes).
- Q: How long does it take for the AD5254BRUZ50-RL7 to restore settings at power-on?
A: The settings are restored automatically to the RDAC registers at system power-on in approximately 300 μs).
