CAT5111LI-10-G

Digital Potentiometers Overview

The CAT5111LI-10-G is a single-channel digital potentiometer featuring a 100-tap linear resistor array with a nominal resistance of 10 kΩ. It incorporates a buffered wiper output driven by an operational amplifier capable of rail-to-rail operation. The device utilizes non-volatile EEPROM to retain the wiper position during power loss, automatically recalling the setting upon power restoration. Control is managed via a three-wire serial interface consisting of Chip Select (CS), Up/Down (U/D), and Increment (INC) pins. Operating on a single supply voltage ranging from 2.5 V to 6.0 V, it is housed in an 8-pin PDIP package.

Digital Potentiometers Feature Summary

• 100-position linear taper potentiometer with 10 kΩ nominal resistance
• Non-volatile EEPROM storage for wiper position retention across power cycles
• Buffered wiper output with rail-to-rail capability and 3 mA output current drive
• Three-wire serial control interface (CS, U/D, INC) for increment/decrement adjustments

Digital Potentiometers Applications

• Automated product calibration systems
• Remote control adjustments for inaccessible equipment
• Offset, gain, and zero control in instrumentation
• Tamper-proof calibration storage
• Contrast, brightness, and volume controls in consumer electronics

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'L' corresponds to the PDIP-8 package and 'I' indicates the industrial temperature range (-40°C to +85°C). Confirm that the '-10' suffix denotes the 10 kΩ resistance value. Ensure compliance with RoHS and Pb-Free requirements as specified in the ordering information table. Check for any specific lead finish variations if alternative packages are considered.

Digital Potentiometers Selection Notes

Select this component when a buffered analog output is required, as opposed to unbuffered variants like the CAT5113. The 100-tap resolution provides finer adjustment granularity compared to 32-tap devices. Ensure the application voltage stays within the 2.5 V to 6.0 V range. Consider the 200 µA maximum supply current during increment operations for power budgeting. Verify that the 10 kΩ resistance value matches the circuit's impedance requirements.

Digital Potentiometers Part Context

This part belongs to the CAT5111 family of 100-tap digital potentiometers. The 'L' suffix identifies the PDIP-8 through-hole package, while 'V', 'Y', and 'Z' denote SOIC-8, TSSOP-8, and MSOP-8 surface-mount packages respectively. The 'I' suffix specifies the industrial temperature grade. Other resistance options include 50 kΩ ('50') and 100 kΩ ('00').

Digital Potentiometers Replacement Considerations

For unbuffered applications, the CAT5113 series offers similar electrical characteristics without the op-amp buffer. For lower resolution needs, the CAT5115 provides a 32-tap configuration. Ensure pin compatibility and voltage ranges match when substituting with other digital potentiometer ICs.