Texas Instruments RI-MOD-TX2A Reference Manual Download Page 1 | Manualshive

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Texas Instruments

Registration

and

Identification

System

Multiplexer

Module

RI-MOD-TX2A

(discontinued)

RI-MOD-TX4A

(discontinued)

Reference Manual

11-06-21-034

18 November 1996

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Summary of Contents for RI-MOD-TX2A

Page 1: ...Texas Instruments Registration and Identification System Multiplexer Module RI MOD TX2A discontinued RI MOD TX4A discontinued Reference Manual 11 06 21 034 18 November 1996...

Page 2: ...plexer Module to the S25x0 has been included Texas Instruments reserves the right to change its products or services at any time without notice TI provides customer assistance in various technical are...

Page 3: ...Supply 17 4 1 1 Supply Requirements 17 4 2 Antenna Requirements 17 4 3 Connecting Cable 18 4 4 Antenna Resonance Tuning 18 Figures Figure 1 Top View 7 Figure 2 Block Diagram 7 Figure 3 Configuration...

Page 4: ...Multiplexer Module TX2A TX4A 18 November 1996 MUX 4...

Page 5: ...g For product and ordering numbers of RF Module Antennas Control Modules combinations of these and Accessories please contact your local TIRIS Application Center The Module RI MOD TX2A is the 2 channe...

Page 6: ...Control Module or a customer designed control unit are Low Power Schottky TTL and HCMOS Logic compatible The Multiplexer includes circuitry to reduce crosstalk of transmit function There are four conn...

Page 7: ...TX RX antenna 4 TX RX antenna 1 TX RX antenna 2 TX RX antenna 3 Figure 1 Top View The Multiplexer switches the selected antenna to the RF Module The Multiplexer switches both the transmit and receive...

Page 8: ...t Signals CSA CSB and Enable The Multiplexer has built in voltage regulators to supply the logic part and the MOS FET drivers with regulated voltage The input supply voltage must be connected to the p...

Page 9: ...with the RF Module As the Multiplexer does not include the feature to tune the antennas individually to resonance the tuning has to be done in such a way that the optimum reading performance is achiev...

Page 10: ...pletely switched off because there is still reasonable coupling via the parasitic capacitance of the MOSFET switch As the TIRIS receiver is very sensitive the small voltage which is coupled via this c...

Page 11: ...e RFM antenna terminals via connector J3 Table 4 lists the pin function for ground post J6 Table 5 shows the logic switching of the active channel All connectors are accessible from the top Table 1 J1...

Page 12: ..._OUT2 IN OUT Switched antenna signal switched to ground GNDTX when active Connected to TX RX antennas 6 ANT IN OUT Antenna resonator signal Connected to TX RX antennas 7 A_OUT1 IN OUT Switched antenna...

Page 13: ...ed When it is closed all TX RX channels are enabled Default J2 closed J5 This jumper is used to connect the antenna terminal GNDTX pin 2 of connector J4 to the Multiplexer ground GND When using the Mu...

Page 14: ...ed into a housing it must be guaranteed by proper design or cooling that the internal temperature does not exceed the absolute maximum ratings CAUTION Exceeding absolute maximum ratings may lead to pe...

Page 15: ...signals CSA CSB and Enable signal J2 2 4 5 0 V Fan In Low Power Schottky compatible fan in of signals CSA CSB and Enable signal Iin 400 A 1 3 4 Timing Characteristics Symbol Parameter min typ max Unit...

Page 16: ...ements given in figure 8 have a tolerance of 0 25 m J1 1 J2 J5 J6 8 1 J3 2 1 J7 85 09 90 17 5 08 5 08 15 49 85 54 130 81 135 89 74 01 64 00 95 25 J4 Figure 8 Module Layout and Dimensions Table 6 Size...

Page 17: ...age Allowed Ripple Frequency Unregulated VCL supply 30 mVrms 0 to 100 kHz maximum sinusoidal 4 2 Antenna Requirements The transmit antenna for the RF Module which is used to charge up the transponder...

Page 18: ...tandard Antennas when used together with the Multiplexer 55 4 3 Connecting Cable We recommend that the cable between the RFM and the Multiplexer is low resistive for example RF Litz wire 120 x 0 1 mm...

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