Overview
The CAT5221WI-10-T1 is a dual digital potentiometer produced by onsemi. This component integrates two digital potentiometers with 64 taps each, along with control logic and 16 bytes of non-volatile memory (NVRAM). It features an I2C interface for potentiometer control and memory access. The device is designed for circuit-level or system-level adjustments in various applications, offering flexibility and precision in voltage division and signal attenuation.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Potentiometers | 2 | |
| Number of Taps per Potentiometer | 64 | |
| End-to-End Resistance | 10 kΩ | Ω |
| Wiper Resistance | Typically 80 Ω | Ω |
| Operating Voltage | 2.5 to 6.0 V | V |
| Standby Current | < 1 μA | A |
| Nonvolatile Memory Write Cycles | 1,000,000 | |
| Nonvolatile Memory Data Retention | 100 years | years |
| Package Type | 20-lead SOIC | |
| Temperature Range | -40 to +85 °C (Industrial) | °C |
| Compliance | Pb-Free, Halogen Free/BFR Free, RoHS Compliant |
Key Features
- Two linear-taper digital potentiometers with 64 resistor taps each.
- End-to-end resistance options: 2.5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ.
- Potentiometer control and memory access via I2C interface.
- Low wiper resistance, typically 80 Ω.
- Nonvolatile memory storage for up to four wiper settings for each potentiometer.
- Automatic recall of saved wiper settings at power-up.
- Operating voltage range: 2.5 to 6.0 V.
- Standby current less than 1 μA.
- Up to 1,000,000 nonvolatile write cycles and 100-year nonvolatile memory data retention.
- Available in 20-lead SOIC and TSSOP packages.
- Industrial temperature range and RoHS compliance.
Applications
The CAT5221WI-10-T1 is suitable for a wide range of applications requiring precise voltage division, signal attenuation, and adjustable resistance. These include:
- Circuit-level and system-level adjustments in industrial, automotive, and consumer electronics.
- Audio and video equipment for volume control and signal processing.
- Medical devices requiring adjustable resistance and voltage division.
- Aerospace and defense applications where precise control is critical.
- Automotive systems for sensor calibration and signal conditioning.
Q & A
- What is the CAT5221WI-10-T1?
The CAT5221WI-10-T1 is a dual digital potentiometer with 64 taps per potentiometer, integrated with control logic and non-volatile memory, and an I2C interface for control and memory access.
- What are the end-to-end resistance options for the CAT5221WI-10-T1?
The end-to-end resistance options are 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- How is the potentiometer controlled?
The potentiometer is controlled via an I2C serial interface.
- What is the typical wiper resistance?
The typical wiper resistance is 80 Ω.
- Does the device have non-volatile memory?
Yes, it has non-volatile memory for storing up to four wiper settings for each potentiometer.
- What is the operating voltage range?
The operating voltage range is 2.5 to 6.0 V.
- What is the standby current?
The standby current is less than 1 μA.
- How many non-volatile write cycles does the device support?
The device supports up to 1,000,000 non-volatile write cycles.
- What is the data retention period for the non-volatile memory?
The data retention period is 100 years.
- In what packages is the CAT5221WI-10-T1 available?
The device is available in 20-lead SOIC and TSSOP packages.
