X90100M8I

Overview

The Renesas X90100M8I is a non-volatile electronically programmable capacitor housed in an 8-lead MSOP package. It provides 32 selectable capacitance values ranging from 7.5pF to 14.5pF with 0.23pF increments in single-ended mode. The device features internal EEPROM storage for power-on recall of the selected setting and operates on a supply voltage between 2.7V and 5.5V. It utilizes a simple three-pin digital interface (INC, U/D, CS) for adjustments and includes Schmitt triggers with pullup resistors.

Feature Summary

• Non-volatile EEPROM storage retains programmed trim codes without DC power.
• Capacitance range of 7.5pF to 14.5pF with 0.23pF resolution.
• Low temperature drift coefficient in differential mode (<50ppm/°C).
• Fast incremental change time of 5µs maximum.

Applications

• Post-trim of low-cost regenerative receivers
• Tunable RF stages
• Low-cost, low temperature drift oscillators
• Garage door openers and keyless entry systems
• Industrial wireless control and RFID tags

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm packaging type. The standard M8I designation indicates tube packaging, while the IT1 suffix denotes tape and reel. Confirm that the required operating temperature range of -40°C to +85°C aligns with the system specifications before procurement.

Selection Notes

Select this component when mechanical tuning is undesirable or impossible in a surface-mount design. Ensure the application requires a capacitance value within the 7.5pF to 14.5pF range. Verify that the host controller can provide the necessary INC, U/D, and CS signals for programming and that the supply voltage remains within the 2.7V to 5.5V operational limits.

Part Context

This device belongs to the X90100 family of NV Electronically Programmable Capacitors manufactured by Intersil Americas Inc., now part of Renesas Electronics Corporation. It serves as a solid-state alternative to mechanical trimmer capacitors, offering precise digital control over capacitance values through a standard up/down interface compatible with other digitally controlled potentiometers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.