Overview
The CAT5140ZI-50-GT3 is a single-channel, non-volatile, 256-tap digital potentiometer (POT) manufactured by onsemi. This device is composed of a series of equal value resistor elements connected between two externally accessible end points. The tap points between each resistive element can be selectively connected to the wiper output via internal CMOS switches, forming a linear taper electronic potentiometer. The CAT5140ZI-50-GT3 includes a volatile wiper register and an 8-bit non-volatile EEPROM for wiper position and additional non-volatile registers for general-purpose data storage. Programming is controlled via an I2C interface, and the device operates over an industrial temperature range of -40°C to +85°C.
Key Specifications
| Specification | Value |
|---|---|
| Interface | 2-Wire, I2C, Serial |
| Max Operating Temperature | 85 °C |
| Max Supply Current | 1 mA |
| Max Supply Voltage | 5.5 V |
| Min Supply Voltage | 2.5 V |
| Type | Single Channel 256 Tap Digitally Programmable Potentiometer |
| End-to-End Resistance | 50 kΩ |
| TCR (Typical) | 100 ppm/°C |
| Standby Current (Max) | 2 µA |
| Typical Wiper Resistance | 70 Ω @ 3.3 V |
| Non-volatile Memory | 6 Registers 8-bit Non-volatile EEPROM |
| Data Write Stores | 2,000,000 |
| Data Retention | 100 Years |
| Package Type | 8-Lead MSOP |
| Compliance | Pb-free RoHS Compliant: NiPdAu Plating |
Key Features
- 256-position linear taper potentiometer
- I2C compatible interface with a frequency of up to 400 kHz
- Non-volatile EEPROM for wiper position and general-purpose data storage
- Low standby current of 2 µA (max)
- Operating voltage range of 2.5 V to 5.5 V
- High data retention of 100 years and 2,000,000 data write stores
- Pb-free RoHS compliant with NiPdAu plating
Applications
- Gain adjustment and line impedance matching
- Automated calibration
- Contrast, brightness, and volume control
- LCD screen adjustment
- Instrumentation for handheld and portable devices
- Industrial automation for handheld and portable devices
- Portable games
Q & A
- What is the CAT5140ZI-50-GT3? The CAT5140ZI-50-GT3 is a single-channel, non-volatile, 256-tap digital potentiometer manufactured by onsemi.
- What is the interface type of the CAT5140ZI-50-GT3? The device uses a 2-wire I2C serial interface.
- What is the operating temperature range of the CAT5140ZI-50-GT3? The device operates over an industrial temperature range of -40°C to +85°C.
- What is the maximum supply voltage for the CAT5140ZI-50-GT3? The maximum supply voltage is 5.5 V.
- What is the typical wiper resistance of the CAT5140ZI-50-GT3? The typical wiper resistance is 70 Ω @ 3.3 V.
- How many data write stores does the CAT5140ZI-50-GT3 support? The device supports 2,000,000 data write stores.
- What is the data retention period of the CAT5140ZI-50-GT3? The data retention period is 100 years.
- What package type is the CAT5140ZI-50-GT3 available in? The device is available in an 8-lead MSOP package.
- Is the CAT5140ZI-50-GT3 RoHS compliant? Yes, the device is Pb-free RoHS compliant with NiPdAu plating.
- What are some common applications of the CAT5140ZI-50-GT3? Common applications include gain adjustment, automated calibration, contrast and brightness control, LCD screen adjustment, and instrumentation for handheld and portable devices.
