Overview
The AD5142BRUZ100, manufactured by Analog Devices Inc., is a dual-channel, 256-position, SPI-compatible, nonvolatile digital potentiometer. This device is designed to provide a nonvolatile solution for adjustment applications, offering low resistor tolerance and high precision. It is available in a compact 16-lead TSSOP package and operates over an extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | 256 | Positions | |||
| Resistor Tolerance | ΔRAB/RAB | −8% | +8% | % | ||
| Resistor Integral Nonlinearity (R-INL) | R-INL | RAB = 100 kΩ, VDD ≥ 2.7 V | −1 | ±0.1 | +1 | LSB |
| Resistor Differential Nonlinearity (R-DNL) | R-DNL | −0.5 | ±0.2 | +0.5 | LSB | |
| Wiper Current | IA, IB, IW | RAB = 100 kΩ | −1.5 | +1.5 | mA | |
| Bandwidth | BW | RAB = 100 kΩ | 0.43 | MHz | ||
| Total Harmonic Distortion (THD) | THD | VDD/VSS = ±2.5 V, VA = 1 V rms, VB = 0 V, f = 1 kHz, RAB = 10 kΩ | −80 | dB | ||
| Operating Temperature | TA | −40 | +125 | °C | ||
| Logic Supply Voltage | VLOGIC | 1.8 | 5.5 | V |
Key Features
- Dual-channel, 256-position digital potentiometer with SPI interface.
- Nonvolatile memory for wiper settings.
- Low resistor tolerance of ±8% maximum.
- Low temperature coefficient of 35 ppm/°C.
- High bandwidth of up to 3 MHz and low total harmonic distortion (THD) of −80 dB.
- Fast start-up time of less than 75 μs.
- Linear gain setting mode for independent programming of resistance.
- Single- and dual-supply operation with independent logic supply from 1.8 V to 5.5 V.
- Compact 16-lead TSSOP package.
- 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 is the resolution of the AD5142BRUZ100 digital potentiometer?
The AD5142BRUZ100 has a resolution of 256 positions.
- What are the available resistance options for the AD5142BRUZ100?
The device is available with 10 kΩ and 100 kΩ resistance options.
- What is the maximum wiper current for the AD5142BRUZ100?
The maximum wiper current is ±6 mA for RAB = 10 kΩ and ±1.5 mA for RAB = 100 kΩ.
- What is the operating temperature range of the AD5142BRUZ100?
The device operates over an extended industrial temperature range of −40°C to +125°C.
- What is the bandwidth of the AD5142BRUZ100?
The bandwidth is up to 3 MHz for RAB = 10 kΩ and 0.43 MHz for RAB = 100 kΩ.
- Does the AD5142BRUZ100 support nonvolatile memory?
Yes, it supports nonvolatile memory for wiper settings.
- What is the logic supply voltage range for the AD5142BRUZ100?
The logic supply voltage range is from 1.8 V to 5.5 V.
- What package options are available for the AD5142BRUZ100?
The device is available in a 16-lead TSSOP package and a 16-lead LFCSP package.
- Is the AD5142BRUZ100 qualified for automotive applications?
Yes, it is qualified for automotive applications.
- What are some common applications of the AD5142BRUZ100?
Common applications include portable electronics level adjustment, LCD panel brightness and contrast controls, programmable filters, delays, and time constants, and programmable power supplies.
