Overview
The AD5142BCPZ10-RL7 is a dual-channel, nonvolatile digital potentiometer manufactured by Analog Devices Inc. This device is part of the AD5142 family and is designed for applications requiring precise and programmable resistance adjustments. It features 128 or 256 positions, depending on the configuration, and operates via an SPI-compatible digital interface. The AD5142BCPZ10-RL7 is available in a compact 16-lead LFCSP package, measuring 3 mm x 3 mm, and is qualified for automotive and industrial applications due to its wide operating temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | 128/256 | Positions | |||
| Resistor Tolerance | ΔRAB/RAB | -8% | +8% | % | ||
| Wiper Current | IA, IB, IW | RAB = 10 kΩ | -6 mA | +6 mA | mA | |
| Temperature Coefficient | (ΔVW/VW)/ΔT | Code = half scale | ±5 ppm/°C | ppm/°C | ||
| Bandwidth | BW | RAB = 10 kΩ | 3 MHz | MHz | ||
| Total Harmonic Distortion | THD | VDD/VSS = ±2.5 V, VA = 1 V rms, VB = 0 V, f = 1 kHz | -80 dB | dB | ||
| Operating Temperature | TA | -40°C | +125°C | °C | ||
| Logic Supply Voltage | VLOGIC | 1.8 V | 5.5 V | V |
Key Features
- Dual-channel, 128-/256-position digital potentiometer with SPI-compatible digital interface.
- Available in 10 kΩ and 100 kΩ resistance options with ±8% maximum resistor tolerance.
- Low wiper resistance of only 40 Ω at the ends of the resistor array.
- High bandwidth of up to 3 MHz and low total harmonic distortion (THD) of -80 dB, making it suitable for filter design and ac signal applications.
- Fast start-up time of less than 75 μs and linear gain setting mode for independent programming of resistance between terminals.
- Single- and dual-supply operation with independent logic supply from 1.8 V to 5.5 V.
- Compact 16-lead LFCSP and TSSOP package options.
- Qualified for automotive applications and operates over an extended industrial temperature range of −40°C to +125°C).
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 AD5142BCPZ10-RL7? The AD5142BCPZ10-RL7 has a resolution of 128 or 256 positions.
- What are the available resistance options for the AD5142BCPZ10-RL7? The device is available in 10 kΩ and 100 kΩ resistance options).
- What is the maximum wiper current of the AD5142BCPZ10-RL7? The maximum wiper current is ±6 mA for RAB = 10 kΩ).
- What is the temperature coefficient of the AD5142BCPZ10-RL7? The temperature coefficient is ±5 ppm/°C).
- What is the bandwidth of the AD5142BCPZ10-RL7? The bandwidth is up to 3 MHz for RAB = 10 kΩ).
- What is the total harmonic distortion (THD) of the AD5142BCPZ10-RL7? The THD is -80 dB at specific test conditions).
- What is the operating temperature range of the AD5142BCPZ10-RL7? The operating temperature range is −40°C to +125°C).
- What is the logic supply voltage range for the AD5142BCPZ10-RL7? The logic supply voltage range is from 1.8 V to 5.5 V).
- Is the AD5142BCPZ10-RL7 qualified for automotive applications? Yes, it is qualified for automotive applications).
- What package options are available for the AD5142BCPZ10-RL7? The device is available in 16-lead LFCSP and TSSOP packages).
