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TK5530HM Datasheet(PDF) 2 Page - ATMEL Corporation |
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TK5530HM Datasheet(HTML) 2 Page - ATMEL Corporation |
2 / 9 page 2 TK5530 4683A–RFID–02/03 General The transponder consists of a plastic cube which accommodates following components: • Read-only IDICÒ with ROM (e5530) • Antenna realized as tuned LC-circuit Read-Only IDICÒ with ROM (e5530) The e5530 is part of a closed coupled identification system (see ’System Block Dia- gram’). It receives power from a RF transmitter (reader) which is coupled inductively to the IDIC. The TK5530 transponder operates at a nominal frequency of 125 kHz. Receiv- ing RF, the IDIC responds with a data stream by damping the incoming RF via an internal load. This damping in turn can be detected by the reader. The identifying data are stored in a 128-bit PROM on the e5530, which is factory programmed with a unique code (see specification of the e5530). The e5530 has several possible options regarding modulation, bitrate, memory size etc. Antenna The antenna consists of a coil and a capacitor for tuning the circuit to the nominal carrier frequency of 125 kHz. The coil has a ferrite-core for improving the readout distance. Figure 1. Block Diagram R7 R6 R5 R4 R3 R2 R1 R0 Column decoder Counter Modulator FSK PSK BIPH Manchester Bitrate Data Load Clock extractor Rectifier Mod Clk Analog front end Coil Coil V DD V SS 128 bit PROM |
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