Microchip MIK25RFIDB
The Microchip Microchip MIK25RFIDB is an reader IC, with Not applicable (reader IC, no onboard tag memory), operating at 125 kHz, under Proprietary LF protocols (EM4100/EM4102 compatible Microchip TBP/HHP formats).
125 kHz LF RFID reader IC/module solution for access control and animal identification applications.
Full Specifications
| Manufacturer | Microchip |
|---|---|
| Frequency Category | LF 125 kHz |
| Frequency | 125 kHz |
| Protocol | Proprietary LF protocols (EM4100/EM4102 compatible, Microchip TBP/HHP formats) |
| Memory | Not applicable (reader IC, no onboard tag memory) |
| Interface | Analog RF front-end, UART/digital output to host MCU |
| Temperature Range | -40°C to +85°C |
| Form Factor | Reader module / IC solution (board-mount module) |
| Security | Basic read-only tag ID validation, no onboard encryption |
Engineering Brief
The MIK25RFIDB is a 125 kHz LF RFID reader IC/module solution designed to interrogate low-frequency glass/disc tags commonly used in access control and animal ID applications. It provides the analog front-end and demodulation circuitry needed to detect and decode standard LF tag formats like EM4100, outputting tag ID data to a host microcontroller via a simple digital interface. It is not a tag itself but a reader reference design, making it suitable for integrators building badge readers or animal tag scanners. Engineers should pair it with an external antenna coil and host MCU for full system implementation.
How the Microchip MIK25RFIDB Works
The MIK25RFIDB operates as a 125 kHz LF reader front-end rather than a transponder. It drives an external antenna coil to generate a continuous 125 kHz carrier, then listens for the load-modulated return signal produced by passive LF tags such as EM Microelectronic EM4100-compatible glass or disc transponders. Decoding follows the common EM4100/EM4102 bitstream structure — Manchester-encoded data with a fixed header and parity rows — which the onboard analog front-end demodulates and converts into a digital pulse train.
There is no anti-collision scheme on this reader; like most single-tag LF proprietary setups, it assumes one tag is presented at a time within read range. Decoded tag IDs are passed to a host microcontroller over a UART or simple digital interface, where application firmware performs ID validation and any access-control logic, since the chip itself holds no onboard memory or cryptographic engine.
Typical Applications
Standards & Compliance
Frequently Asked Questions
What frequency does the MIK25RFIDB operate at?
It operates at 125 kHz, the standard low-frequency RFID band used for proximity and animal ID tags.
What tag formats does the MIK25RFIDB support?
It supports proprietary LF protocols compatible with EM4100/EM4102 as well as Microchip TBP/HHP tag formats.
Does the MIK25RFIDB have onboard memory?
No, it is a reader IC/module and does not contain onboard tag memory; it only reads data from external LF tags.
What interface does the MIK25RFIDB use to communicate with a host system?
It provides an analog RF front-end for tag detection and a UART/digital output interface to send decoded tag ID data to a host MCU.
Is the MIK25RFIDB suitable for animal identification applications?
Yes, it is designed to interrogate LF glass/disc tags commonly used in animal identification as well as access control badges.
Does the MIK25RFIDB include encryption or security features?
No, it only performs basic read-only tag ID validation without onboard encryption.
Explore
Cross-manufacturer alternatives
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