Texas Instruments TIRIS RI-TRP-RRHP Reference Manual
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Transponder RI-TRP-RRHP RI-TRP-WRHP Reference Manual 11-09-21-023 25-July-1996 ...
25 July 1996 Page 2 of 22 Edition Notice: Fourth Edition - July 1996 This is the fourth edition of this manual, it describes the following transponders: RI-TRP-RRHP RI-TRP-WRHP This Reference Manual is for customers who wish to use the TIRIS 23 mm Glass Encapsulated Transponder in Radio Frequency Identification (RFID) installations. The manual includes technical information concerning the function, technical spe ...
23 mm Transponder Reference Manual Page 3 of 22 Contents 1. Introduction ................................................................................................................................... 4 2. Transponder Packaging ................................................................................................................. 5 3. Product Codes ........................................................................ ...
25 July 1996 Page 4 of 22 1. Introduction The TIRIS 23 mm Glass Encapsulated Pulsed FM Transponder is a key product in low frequency RFID systems that can be used for a variety of applications, such as automotive security systems. The device is available in Read Only (RO) and Read/Write (R/W) versions. Electro Magnetic signals are used to power the passive (batteryless) device, to transmit the identification nu ...
23 mm Transponder Reference Manual Page 5 of 22 2. Transponder Packaging The dimensions of the transponder are given in Figure 3. The 23 mm shape offers several advantages: 1. The transponder is hermetically sealed. 2. The transponder is robustly constructed to withstand vibration (IEC68-2-6) and shock (IEC68-2-6). 3. For Applications where read range is not the most critical point the transponder can be mounted or used in such a way t ...
25 July 1996 Page 6 of 22 The typical data low bit frequency is 134.2 kHz, the typical data high bit frequency is 123.2 kHz. The low and high bits have different durations, because each bit takes 16 RF cycles to transmit. The high bit has a typical duration of 130 µs, the low bit of 119 µs. Figure 5 shows the FM principle used. Regardless of the number of low and high bits, the transponder response duration i ...
23 mm Transponder Reference Manual Page 7 of 22 134.2 kHz 123.2 kHz 134.2 kHz 123.2 kHz 0 0 1 1 129.2 µs 119.9 µs Figure 5: FM Principle Used for the Read Function of TIRIS Transponders 16 8 64 112 bits 16 bits 8 16 15 BITS READ DATA IDENTIFICATION DATA DATA BCC END BITS DISCHARGE MSB LSB PRE STOP START Figure 6a: Read Data Format of TIRIS RO Transponder 16 8 64 112 bits 16 bits 8 16 15 BITS READ DATA IDENTIFICATION DATA DATA BCC MSB ...
25 July 1996 Page 8 of 22 4.2 Write and Program A new identification number can be written (programmed) into a R/W transponders in the following manner: After the charge phase the R/W transponder enters the write mode providing the reader starts to modulate the field by switching the transmitter on and off (TXCT-). Modulation index of this amplitude modulation is 100%. The duration of the off-phase defines whe ...
23 mm Transponder Reference Manual Page 9 of 22 TRANSMITTER OFF TXCT - HIGH BIT PROGRAM WRITE LOW BIT TRANSMITTER ON toffH tonH toffL tonL tprog tH tL Figure 8: The Write and Program Function RF MODULE TXCT- SIGNAL READ 20 ms CHARGE 50 ms KEYWORD 16 16 ms 160 ms 32 ms PROGR. 15 ms PASSWORD 16 ms 112 bit 309 ms WRITE WRITE DATA 128 bit LSB MSB WRITE FRAME 8 80 8 WRITE Figure 9: Write Data Format for Programming Function 5. Characteri ...
25 July 1996 Page 10 of 22 5.2 Reader and System Design Impact * Ease of receiver and power function design and the optimization of performance due to sequential power/read functions. * Low field strength for transponder charge, resulting in lower cost of the power function. * Optional performance and cost trade-offs by variation of: interrogation speed by software down to 35 ms. component selection to achieve di ...
23 mm Transponder Reference Manual Page 11 of 22 6. EMI/EMC Performance 6.1 General For any given RF-ID system, the EMI/EMC performance is determined by three factors: 1. The reader design and the resulting noise immunity performance 2. The signal strength of the transponder and Signal/Noise ratio at the receiver input 3. The transponder immunity to EM fields: - The most critical EMI factor or component in a system is the reader immuni ...
25 July 1996 Page 12 of 22 The TIRIS system performance using reader and 23 mm transponder is shown in figures 10, 11 and 12. Figure 10 shows the system immunity over a spectrum of 6 decades. At the most critical Radio Short Wave Broadcast frequencies 400 V/m were encountered. Figure 11 highlights the system performance simulating in-car RF communication conditions. Figure 12 shows the performance (reading range ...
23 mm Transponder Reference Manual Page 13 of 22 1 2 5 10 20 50 100 200 500 1,000 0 20 40 60 80 100 120 ELECTRICAL FIELD STRENGTH (VOLTS/m) 430 MHz 145 MHz 900 MHz READING RANGE (%) normalized Figure 11: EMI performance at commonly used radio communication frequencies in automotive environment. White noise performance of TIRIS 20 25 30 35 40 45 50 55 60 65 0 10 20 30 40 50 60 70 80 90 100 NOISE LEVEL [dBµΑ µΑ/m] READING RA ...
25 July 1996 Page 14 of 22 7. Measurement Set-Ups This Section describes typical measurement set-ups to determine transponder relevant data like: resonant frequency, bandwidth, quality factor, powering field strength and transponder signal field strength listed in Section 9 "Rocommended Operating Conditions". 7.1 Measurement Set-Up: Resonance frequency, bandwidth, quality factor of transponder This test set-up i ...
23 mm Transponder Reference Manual Page 15 of 22 3 dB fRes f U Pick-up coil f Figure 14: Determination of the resonance frequency and -3dB bandwidth by monitoring the pick-up coil voltage 7.2 Measurement Set-Up: Powering Field Strength The following set-up is used to determine the minimum required powering field strength. ANTENNA AXIS PICK-UP COIL SIGNAL GENERATOR d/2 d COILS OSCILLOSCOPE Trigger TRANSPONDER Figure 15: Test s ...
25 July 1996 Page 16 of 22 Determination of the minimum powering field strength is possible by changing the field strength through increasing the coil current. The relation between the generated magnetic flux / field strength and coil current can either be measured with a calibrated filed probe, or calculated as follows: (2) B N I d H o r r = ⋅ ⋅ ⋅ ⋅ = ⋅ ⋅ ⋅ 4 5 4 5 2 0 µ µ µ µ / B: magnetic fl ...
23 mm Transponder Reference Manual Page 17 of 22 7.3 Measurement Set-Up: Transponder Signal Strength The 23 mm transponder has to be located into a homogeneous field (Helmholtz set-up). The pulsed power signal is generated by a signal generator. A calibrated field strength probe picks up the transponder signal. The field strength can be calculated by using the calibration factor of the field strength probe. ANTENNA AXIS PICK-UP CO ...
25 July 1996 Page 18 of 22 8. Absolute Maximum Ratings All data given for free air operating temperature range (unless otherwise noted). PARAMETER CONDITION MIN. NOM. MAX. UNIT Operating temperature (read) Taread -40 85 oC Operating temperature (program) TaProg -40 70 oC Storage temperature Ts -40 100 oC Storage temperature Ts 5 min 175 oC Field strength Hexc 134.2 kHz 168 dBµA /m 9. Recommended Operating Cond ...
23 mm Transponder Reference Manual Page 19 of 22 10. Characteristics All data given for free air temperature range, a charge time of 50 ms, and a transmitter frequency of 134.2 kHz +/- 40 Hz (unless otherwise noted). PARAMETER CONDITION MIN. NOM. MAX. UNIT Operating quality factor Qop Note 1 62 Low bit transmit frequency fL 131.5 139.0 kHz Low bit transmit frequency fL + 25 oC 132.2 134.3 136.2 kHz Low bit duration tL 0.115 0.119 0.12 ...
25 July 1996 Page 20 of 22 11. Environmental Data and Reliability PARAMETER CONDITIONS MIN. NOM. MAX. UNIT Programming cycles Note 1 25 oC 100 k cycles Data retention time Note 1 100k cycles @ 25oC storage temperature 10 years EM Radiation immunity 1...512 MHz 100 V/m EM Radiation immunity 512..1000MHz 50 V/m ESD Immunity IEC 801-2 2 kV X-ray dose 2000 RAD Vibration (Note 2) IEC 68-2-6, Test Fc Shock IEC 68-2-2 ...
