Overview
The AD5142ABRUZ100, manufactured by Analog Devices Inc., is a dual-channel, 256-position digital potentiometer. This component is designed to operate as a true variable resistor for analog signals, offering a nonvolatile solution for various adjustment applications. It features an I2C interface and is available in a 16-pin TSSOP package. The device is known for its high accuracy, long lifespan, and strong anti-interference capabilities, making it a superior choice over traditional mechanical potentiometers.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resistance Options | RAB | 10 kΩ | 100 kΩ | |||
| Resistor Tolerance | ΔRAB/RAB | -8% | +8% | % | ||
| Wiper Current | IW | RAB = 10 kΩ | -6 mA | +6 mA | mA | |
| RAB = 100 kΩ | -1.5 mA | +1.5 mA | mA | |||
| Temperature Coefficient | (ΔVW/VW)/ΔT | Code = half scale | ±5 ppm/°C | ppm/°C | ||
| Bandwidth | 3 MHz | Hz | ||||
| Start-up Time | < 75 µs | s | ||||
| Operating Temperature | TA | -40°C | +125°C | °C | ||
| Logic Supply Voltage | VLOGIC | 1.8 V | 5.5 V | V | ||
| Capacitance A, B | CA, CB | f = 1 MHz, measured to GND, code = half scale | 12 pF (RAB = 100 kΩ) | 25 pF (RAB = 10 kΩ) | pF | |
| Capacitance W | CW | f = 1 MHz, measured to GND, code = half scale | 5 pF (RAB = 100 kΩ) | 12 pF (RAB = 10 kΩ) | pF |
Key Features
- Resistance Options: Available in 10 kΩ and 100 kΩ resistance options.
- High Accuracy: Guaranteed low resistor tolerance of ±8% maximum.
- Low Temperature Coefficient: 35 ppm/°C, ensuring minimal drift with temperature changes.
- Wide Bandwidth: 3 MHz bandwidth suitable for high-frequency applications.
- Fast Start-up Time: Less than 75 µs start-up time.
- Linear Gain Setting Mode: Supports linear gain setting for precise control.
- Single- and Dual-Supply Operation: Compatible with single and dual supply voltages.
- Independent Logic Supply: Logic supply voltage range from 1.8 V to 5.5 V.
- Nonvolatile Memory: Ensures settings are retained even when power is off.
- I2C Interface: Easy communication via the I2C interface.
Applications
- Audio Equipment: Used in audio systems for volume control and tone adjustments.
- Consumer Electronics: Employed in household appliances to adjust parameters such as volume, brightness, and temperature.
- Motor Control: Utilized in motor control circuits to adjust speed, torque, and other control parameters.
- Power Management: Used in power management applications like power adapters and chargers to adjust output voltage and current.
Q & A
- What is the AD5142ABRUZ100 used for?
The AD5142ABRUZ100 is a digital potentiometer used to simulate the behavior of traditional analog potentiometers or variable resistors in integrated circuits. - What are the resistance options available for the AD5142ABRUZ100?
The device is available in 10 kΩ and 100 kΩ resistance options. - What is the temperature coefficient of the AD5142ABRUZ100?
The temperature coefficient is 35 ppm/°C. - What is the bandwidth of the AD5142ABRUZ100?
The bandwidth is 3 MHz. - How long does it take for the AD5142ABRUZ100 to start up?
The start-up time is less than 75 µs. - What interface does the AD5142ABRUZ100 use?
The device uses an I2C interface. - What is the operating temperature range of the AD5142ABRUZ100?
The operating temperature range is from -40°C to +125°C. - What is the logic supply voltage range for the AD5142ABRUZ100?
The logic supply voltage range is from 1.8 V to 5.5 V. - Does the AD5142ABRUZ100 have nonvolatile memory?
Yes, the device has nonvolatile memory to retain settings even when power is off. - In what package is the AD5142ABRUZ100 available?
The device is available in a 16-pin TSSOP package.
