MCP2035-I/ST

RF Front End (LNA + PA) Overview

The MCP2035-I/ST is a general-purpose RF front-end transponder integrated circuit manufactured by Microchip Technology. Designed for low-power applications, it operates within a supply voltage range of 2 V to 3.6 V and supports an operating frequency of 125 kHz. The device features a maximum data rate of 10 kbps and draws an operating supply current of 250 mA. It is housed in a 14-TSSOP package with a width of 4.40 mm and is rated for industrial temperature ranges from -40°C to +85°C.

RF Front End (LNA + PA) Feature Summary

• Integrated RF front-end designed for passive access and start systems
• Supports 125 kHz operation for keyless entry and TPMS applications
• Low power consumption suitable for battery-operated devices

RF Front End (LNA + PA) Applications

• Passive Keyless Entry (PKE) systems
• Tire Pressure Monitoring Systems (TPMS)
• General purpose RFID transponders

RF Front End (LNA + PA) Procurement Notes

Verify the specific suffix 'I/ST' against the official Microchip datasheet to confirm the industrial temperature grade and tube packaging format. Ensure compatibility with 125 kHz antenna designs and validate that the 250 mA supply current requirement aligns with your system's power budget constraints before finalizing procurement.

RF Front End (LNA + PA) Selection Notes

Select this component when a dedicated 125 kHz RF transponder is required for passive entry or monitoring. Compare against the MCP2030A series if lower standby current is critical, as the MCP2035 offers higher operational current. Confirm that the 14-TSSOP footprint fits the PCB layout and that the SPI interface matches the host controller capabilities.

RF Front End (LNA + PA) Part Context

This part belongs to the MCP203x family of RF transponders from Microchip Technology. It serves as a specialized analog frontend for 125 kHz communication protocols. Unlike digital controllers, it focuses on signal conditioning and modulation for passive identification tasks in automotive and security environments.

RF Front End (LNA + PA) Replacement Considerations

The MCP2030A-I/ST is a related variant within the same family but may differ in current consumption profiles. Verify functional equivalence regarding the 125 kHz interface and pinout compatibility before substitution.