Overview
The AD5227BUJZ100-RL7 is a 64-position digital up/down control potentiometer produced by Analog Devices Inc. This device performs the same electronic adjustment function as a 5 V potentiometer or variable resistor, offering a simple 3-wire up/down interface that allows for both manual switching and high-speed digital control. The AD5227 presets to midscale at power-up and can be controlled using a host controller, discrete logic, or manually with a rotary encoder or pushbuttons. Its compact TSOT-23-8 package and automotive temperature range of −40°C to +105°C make it suitable for a variety of applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| End-to-End Terminal Resistance | 10 kΩ, 50 kΩ, 100 kΩ | ||||
| Resolution | 64 steps | ||||
| Operating Voltage | 2.7 V | 5.5 V | V | ||
| Operating Temperature Range | −40°C | +105°C | °C | ||
| Wiper Resistance | VDD = 2.7 V | 100 Ω | 250 Ω | Ω | |
| VDD = 2.8 V to 5.5 V | 50 Ω | 200 Ω | Ω | ||
| Adjustment Settling Time | VA = 5 V ± 1 LSB error band, VB = 0, measured at VW | 1 μs | μs | ||
| Clock Frequency | 50 MHz | MHz |
Key Features
- 64-step resolution with low potentiometer mode temperature coefficient (10 ppm/°C) and low rheostat mode temperature coefficient (35 ppm/°C).
- Simple up/down digital or manual configurable control interface.
- Midscale preset at power-up.
- Ultralow power consumption: IDD = 0.4 μA typ and 3 μA max.
- Fast adjustment time of 1 μs.
- Chip select enable for multiple device operation.
- Compact thin SOT-23-8 (TSOT-8) Pb-free package.
Applications
- Mechanical potentiometer and trimmer replacements.
- LCD backlight, contrast, and brightness controls.
- Portable electronics level adjustment.
- Programmable power supply.
- Digital trimmer replacements.
- Automatic closed-loop control systems.
Q & A
- What is the resolution of the AD5227BUJZ100-RL7? The AD5227BUJZ100-RL7 has a 64-step resolution.
- What are the available end-to-end terminal resistances for the AD5227BUJZ100-RL7? The available resistances are 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating voltage range of the AD5227BUJZ100-RL7? The operating voltage range is from 2.7 V to 5.5 V.
- What is the operating temperature range of the AD5227BUJZ100-RL7? The operating temperature range is from −40°C to +105°C.
- How does the AD5227BUJZ100-RL7 adjust its resistance? The resistance is adjusted using a 3-wire up/down interface with clock pulses determining the step changes, and the direction is set by the U/D pin.
- What is the typical power consumption of the AD5227BUJZ100-RL7? The typical power consumption is 0.4 μA, with a maximum of 3 μA.
- What is the adjustment settling time of the AD5227BUJZ100-RL7? The adjustment settling time is 1 μs.
- Can the AD5227BUJZ100-RL7 be used in multiple device configurations? Yes, it can be used in multiple device configurations using the chip select feature.
- What package type is the AD5227BUJZ100-RL7 available in? It is available in a compact thin SOT-23-8 (TSOT-8) Pb-free package.
- What are some common applications of the AD5227BUJZ100-RL7? Common applications include mechanical potentiometer and trimmer replacements, LCD backlight controls, and programmable power supplies.
