Overview
The AD5142ABRUZ100-RL7 is a digital potentiometer produced by Analog Devices Inc. This component is part of the AD5142 series, which offers a nonvolatile solution for 256-position adjustment applications. It features a dual-channel configuration, each with a 100 kΩ nominal resistance and 256 taps, making it suitable for a wide range of precision adjustment needs. The device operates via an I²C interface, facilitating easy communication and control in various electronic systems.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | 8 | Bits | |||
| Resistor Integral Nonlinearity (R-INL) | R-INL | RAB = 10 kΩ, VDD ≥ 2.7 V | -2 | ±0.2 | +2 | LSB |
| RAB = 10 kΩ, VDD < 2.7 V | -5 | ±1.5 | +5 | LSB | ||
| RAB = 100 kΩ, VDD ≥ 2.7 V | -1 | ±0.1 | +1 | LSB | ||
| RAB = 100 kΩ, VDD < 2.7 V | -2 | ±0.5 | +2 | LSB | ||
| Resistor Differential Nonlinearity (R-DNL) | R-DNL | -0.5 | ±0.2 | +0.5 | LSB | |
| Nominal Resistor Tolerance | ΔRAB/RAB | -8 | ±1 | +8 | % | |
| Maximum Continuous Current | IA, IB, and IW | RAB = 10 kΩ | -6 | +6 | mA | |
| RAB = 100 kΩ | -1.5 | +1.5 | mA | |||
| Voltage Divider Temperature Coefficient | (ΔVW/VW)/ΔT × 10^6 | Code = half scale | ±5 | ppm/°C |
Key Features
- Dual-Channel Configuration: Each channel has 256 taps, providing precise adjustment capabilities.
- I²C Interface: Facilitates easy communication and control with a microcontroller or other I²C-compatible devices.
- Nonvolatile Memory: Ensures that the wiper settings are retained even when power is turned off.
- Low Power Consumption: Operates with a supply voltage range of 2.3 V to 5.5 V, making it suitable for battery-powered applications.
- High Accuracy and Stability: Features low integral and differential nonlinearity, ensuring high precision in resistance settings.
- Temperature Stability: The voltage divider temperature coefficient is ±5 ppm/°C, ensuring stable performance over a wide temperature range.
Applications
- Audio and Video Equipment: Used for volume control, tone control, and other audio/video adjustments.
- Industrial Control Systems: Suitable for precision adjustments in industrial automation and control systems.
- Medical Devices: Applied in medical equipment requiring precise and stable resistance settings.
- Aerospace and Defense: Used in various aerospace and defense applications where high reliability and precision are critical.
- Automotive Systems: Employed in automotive electronics for adjustments such as sensor calibration and signal conditioning.
Q & A
- What is the resolution of the AD5142ABRUZ100-RL7?
The AD5142ABRUZ100-RL7 has a resolution of 8 bits, providing 256 taps for each channel. - What is the nominal resistance of the AD5142ABRUZ100-RL7?
The nominal resistance is 100 kΩ for each channel. - What interface does the AD5142ABRUZ100-RL7 use for communication?
The device uses an I²C interface for communication. - Does the AD5142ABRUZ100-RL7 have nonvolatile memory?
Yes, the AD5142ABRUZ100-RL7 has nonvolatile memory, ensuring that wiper settings are retained even when power is turned off. - What is the operating voltage range of the AD5142ABRUZ100-RL7?
The operating voltage range is from 2.3 V to 5.5 V. - What is the maximum continuous current for each terminal?
The maximum continuous current is ±6 mA for RAB = 10 kΩ and ±1.5 mA for RAB = 100 kΩ. - What is the temperature coefficient of the voltage divider?
The temperature coefficient of the voltage divider is ±5 ppm/°C. - How many channels does the AD5142ABRUZ100-RL7 have?
The AD5142ABRUZ100-RL7 has two channels. - What are some common applications of the AD5142ABRUZ100-RL7?
Common applications include audio and video equipment, industrial control systems, medical devices, aerospace and defense, and automotive systems. - How do you reset the AD5142ABRUZ100-RL7?
The device can be reset using the hardware reset pin (RESET), which is activated at logic low.
