This Product Selection Guide contains information to help select products in the RFID, RF Access, Monitoring ICs category on DigiKey.com
RFID or RF access monitoring ICs are semiconductor devices configured as RFID (Radio Frequency Identification) readers, transponders, passive entry or passive start processors and TPMS (Tire Pressure Monitorying System). They are designed to comply with specific RFID standards such as EPC, ISO, NFC, MiFARE and FeliCa, and communicate over I2C, SPI, UART, USB, PWM, RS232, RS422, RS485 and other interfaces.
SelectionCharacteristics
Type: The specific functionality or purpose of the device.
Frequency: The center frequency or frequency range the device is able to support.
Standards: Enumerates protocol, format, form factor, or similar standards with a device conforms.
Interface: Indication of which interface(s) or protocol(s) are used by the device to communicate with other components in the system.
Voltage - Supply: Typically represented by a range, this indicates the low and high voltage limits that one can expect in standard operation. Voltages outside this range may damage the device and other system components.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Mounting Type : How the device is attached.
Expanding on Mounting Types
Chassis Mount
Designed to be mounted to a metal chassis.
Chassis Mount, 8" Wire Lead
Attaches to a metal chassis but it includes an 8" wire for connection.
Chassis, Stud Mount
Designed to be mounted to a metal Chassis using an incorporated stud bolt.
Screw Mount
Attaches using screw terminals.
Stud Mount
Has a stud bolt incorporated into one side for attachment.
Flange Mount
Screws or bolts go through wings (flanges) that protrude from the product.
Connector Mount
A mount that incorporates a connector into its method of attachment into the electrical system.
Surface Mount
Have pins or pads that connect to solder pads on the PCB that are then soldered in place forming an electrical and mechanical connection. Number in front of SMD indicates how many pins/pads, for example a 6-SMD module has 6 pins/pads. May not use or even have all the pins/pads for example 24-SMD module, 14 leads: would fit in the space of a 24-SMD module but only has 14 pins/pads. Typically, they are smaller than the through-hole components.
There are three basic types of pins (leads) for surface mount devices.
Lead Types
Gull wing leads: Enable the most pins per inch when compared to J-lead types but they are more fragile. Easy to inspect for defects after soldering.
J-Leads: Less pins per inch than gull wing leads but they are stronger and less susceptible to breakage.
Flat Leads:
Must be protectively packaged to prevent damage to leads. Leads must be formed into a gull shape prior to use with a separate piece of equipment. Due to that they are the least popular type of lead.
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the suppliers device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
ProductExamples
| MFR PART # | ST25DV04K-JFR6D3 |
|---|---|
| DIGI-KEY PART # | 497-18728-2-ND |
| MANUFACTURER | STMicroelectronics |
| DESCRIPTION | RFID Transponder IC 13.56MHz ISO 15693 I²C 1.8V ~ 5.5V 12-UFDFN Exposed Pad |
| DATASHEET | Click Here |
| MFR PART # | AS3933-BTST |
|---|---|
| DIGI-KEY PART # | AS3933-BTSTTR-ND |
| MANUFACTURER | ScioSense |
| DESCRIPTION | RFID Reader IC 15kHz ~ 150kHz 2.4V ~ 3.6V 16-TSSOP (0.173", 4.40mm Width) |
| DATASHEET | Click Here |
| MFR PART # | MCP2030AT-I/ST |
|---|---|
| DIGI-KEY PART # | MCP2030AT-I/STTR-ND |
| MANUFACTURER | Microchip Technology |
| DESCRIPTION | Passive Entry/Start, TPMS IC 125kHz SPI 2V ~ 3.6V 14-TSSOP (0.173", 4.40mm Width) |
| DATASHEET | Click Here |
MediaLinks
Articles
Getting Started with RFID
A Designers Guide to RFID
Reading RFID Tags: Gen I and Gen II Solutions