General Description

The HT672A is an RF transponder IC with 13.56MHz RF carrier, which provides a low cost battery less transponder solution when combined with an external in ductor. The inductor and internal capacitor form an LC tank which induce voltage from the radiated 13.56MHz carrier signal generated from the reader antenna.

Features

Low low operating current (15µA @ VDD=2V)

Wide range operating voltage

Battery less RF transponder

Data transmission in read-only operation

Max. of 64-bits customer programmable data

16-bits CRC error detection code

OTP data memory

13.56MHz carrier frequency

Output data baud rate: 5kbps (Typ.)

PWM/ASK modulation

Built-in voltage limiter

8-pin DIP package available for engineering evaluation - not for volume production

Applications

Interactive toys

Security system

Access control

Anti-counterfeit for commercial product