Overview
The CAT5138SDI-10GT3 is a digital potentiometer from onsemi, part of the CAT5136, CAT5137, and CAT5138 family. This device operates as a resistive voltage divider with one terminal connected to ground. It features 128 taps and is controlled via an I2C interface. The CAT5138SDI-10GT3 is particularly useful for applications requiring precise voltage division and adjustment. It is housed in a 6-pin SC-70 package and is RoHS compliant, making it suitable for a wide range of industrial and consumer electronics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Digital Supply Voltage (VDD) | 2.7 to 5.5 | V |
| End-to-End Resistance | 10 kΩ | Ω |
| Number of Taps | 128 | - |
| Operating Temperature Range | -40 to +85 | °C |
| Package Type | SC-70-6 | - |
| Lead Finish | NiPdAu | - |
| Wiper Current | ±3 mA | mA |
| Power Supply Current (Write/Read) | 200 μA | μA |
| Standby Current | 0.5 μA | μA |
| I2C Clock Frequency | 400 kHz | kHz |
Key Features
- Single Linear Digital Potentiometer with 128 Taps
- I2C Interface for control
- End-to-End Resistance of 10 kΩ, 50 kΩ, and 100 kΩ (this model is 10 kΩ)
- Wiper goes to Mid-scale at Power-up
- Low Standby Current
- Industrial Temperature Range: -40°C to +85°C
- 6-pin SC-70 Package
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant
Applications
- LCD Screen Adjustment
- Volume Control
- Mechanical Potentiometer Replacement
- Gain Adjustment
- Line Impedance Matching
- VCOM Setting Adjustments
Q & A
- What is the operating temperature range of the CAT5138SDI-10GT3?
The operating temperature range is -40°C to +85°C. - What is the digital supply voltage range for this device?
The digital supply voltage range is 2.7 V to 5.5 V. - How many taps does the CAT5138SDI-10GT3 have?
The device has 128 taps. - What is the end-to-end resistance of the CAT5138SDI-10GT3?
The end-to-end resistance of this model is 10 kΩ. - What interface does the CAT5138SDI-10GT3 use for control?
The device uses an I2C interface for control. - What is the package type of the CAT5138SDI-10GT3?
The package type is SC-70-6. - Is the CAT5138SDI-10GT3 RoHS compliant?
Yes, the device is RoHS compliant. - What is the standby current of the CAT5138SDI-10GT3?
The standby current is 0.5 μA. - What is the maximum wiper current for the CAT5138SDI-10GT3?
The maximum wiper current is ±3 mA. - Can multiple CAT5138 devices be used on the same I2C bus?
Yes, multiple devices can be used on the same I2C bus due to different device IDs.
