Overview
The AD5142ABRUZ10, produced by Analog Devices Inc., is a dual-channel, 256-position, I2C, nonvolatile digital potentiometer. This component is designed to provide a nonvolatile solution for adjustment applications, offering high precision and reliability. It features low resistor tolerance errors of ±8% and supports up to ±6 mA current density in the Ax, Bx, and Wx pins. The device is available in compact packages, including 16-lead TSSOP, and operates over an extended industrial temperature range of −40°C to +125°C, making it suitable for a variety of applications, including automotive and industrial environments.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resistance Options | 10 kΩ, 100 kΩ | - | - |
| Resistor Tolerance | ±8% maximum | - | - |
| Wiper Current | ±6 mA (RAB = 10 kΩ), ±1.5 mA (RAB = 100 kΩ) | mA | Maximum continuous current |
| Temperature Coefficient | 35 ppm/°C | ppm/°C | Low nominal temperature coefficient |
| Bandwidth | 3 MHz | MHz | - |
| Start-up Time | < 75 μs | μs | - |
| Logic Supply Voltage | 1.8 V to 5.5 V | V | Independent logic supply |
| Operating Temperature | −40°C to +125°C | °C | - |
| Package Options | 16-lead TSSOP, 16-lead LFCSP (3 mm × 3 mm) | - | - |
Key Features
- Linear gain setting mode allowing independent programming of the resistance between the digital potentiometer terminals.
- Single- and dual-supply operation.
- Fast start-up time of less than 75 μs.
- Wide bandwidth of 3 MHz and low total harmonic distortion (THD) for optimal performance with ac signals.
- Low wiper resistance of 40 Ω at the ends of the resistor array.
- I2C-compatible digital interface for setting wiper values and reading back the wiper register and EEPROM contents.
- Qualified for automotive applications.
Applications
- Portable electronics level adjustment.
- LCD panel brightness and contrast controls.
- Programmable filters, delays, and time constants.
- Programmable power supplies.
Q & A
- What are the resistance options available for the AD5142ABRUZ10?
The AD5142ABRUZ10 offers resistance options of 10 kΩ and 100 kΩ.
- What is the maximum resistor tolerance of the AD5142ABRUZ10?
The maximum resistor tolerance is ±8%.
- What is the maximum wiper current for the 10 kΩ and 100 kΩ resistance options?
The maximum wiper current is ±6 mA for the 10 kΩ option and ±1.5 mA for the 100 kΩ option.
- What is the temperature coefficient of the AD5142ABRUZ10?
The temperature coefficient is 35 ppm/°C.
- What is the bandwidth of the AD5142ABRUZ10?
The bandwidth is 3 MHz.
- What is the start-up time of the AD5142ABRUZ10?
The start-up time is less than 75 μs.
- What are the package options available for the AD5142ABRUZ10?
The package options include 16-lead TSSOP and 16-lead LFCSP (3 mm × 3 mm).
- Is the AD5142ABRUZ10 qualified for automotive applications?
- What is the operating temperature range of the AD5142ABRUZ10?
The operating temperature range is −40°C to +125°C.
- How does the linear gain setting mode work in the AD5142ABRUZ10?
The linear gain setting mode allows independent programming of the resistance between the digital potentiometer terminals through RAW and RWB the string resistors, enabling very accurate resistor matching.
