UM0672 User manual. CRX14 and CR14 reference design PCB Gerber files. Introduction

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1 User manual CRX14 and CR14 reference design PCB Gerber files Introduction The purpose of this user manual is to give printed-circuit board references to ease design in the case of STMicroelectronics CRX14 and CR14 RFID reader ICs. The three sets of Gerber files that are provided offer a boosted, a standard and a small antenna design solution, respectively, for the CRX14 and CR14. This document should be read in conjunction with user manual UM0080 Reader USB CRX14 (V4.0) demonstration software and application note AN1806 Antenna (and associated components) matching-circuit calculation for the CRX14 coupler, both available from the website. January 2009 Rev 1 1/15

2 Printed-circuit board references UM Printed-circuit board references 1.1 Printed-circuit board references of a boosted solution for CRX14/CR14 Figure 1 and Figure 2 show the top and bottom layers of the PCB, respectively. The top overlay is presented in Figure 3. Figure 4 provides the circuit and Table 1 gives the bill of materials. Figure 1. Top layer of first PCB 2/15

3 Printed-circuit board references Figure 2. Bottom layer of first PCB ai /15

4 Printed-circuit board references UM0672 Figure 3. Top overlay of first PCB 4/15

5 Printed-circuit board references Figure 4. First PCB C43 FL1 R3 15 k To RFIN R6 22 k 7pF C44 C45 7pF C5 X MHz C3 C36 R2 D2 1N nf 50 V RFIN J2 C21 L3 10 μh 22 μf C nf C11 C29 22 μf U1 Vref RF IN E0 E1 E2 GND GND GND CRX14 Vcc RF OUT GND_RF OSC1 OSC2 GND SCL SDA FL2 FL3 FL4 FL5 180 pf C1 18 pf C pf From Ant C36 36 pf C25 vcc 100 nf C7 22 μf l9 22 μh L10 22 μh C30 22 μf R13 10 k Q2 PZT2222 C pf R10 47 R pf C39 C40 10 pf L11 1 μh L μh C41 C42 R7 option R8 3.3 C48 C pf R9 0 R2 8.2 k 27 pf 68 pf ANT 100 nf 5/15

6 Printed-circuit board references UM0672 Table 1. Bill of materials for first PCB Designator Part type Footprint Description 0 Ω R9 603 Resistor 0.15 µh L Inductor 1N4148 D Diode 1 µh L Inductor 3.3 R8 603 Resistor 7 pf C Capacitor 7 pf C Capacitor 8.2 kω R2 603 Resistor 10 kω R Resistor 10p C Capacitor 10 µh L Inductor MHz X2 XTALCMS Crystal 15 kω R3 603 Resistor 18 pf C1 603 Capacitor 22 kω R6 603 Resistor 22 nf 50 V C Capacitor 22 µf C Capacitor 22 µf C Capacitor 22 µf C Capacitor 22 µf C Capacitor 22 µh l Inductor 22 µh L Inductor 27 pf C3 603 Capacitor 36 pf C Capacitor 47 Ω R Resistor 68 Ω R Resistor 68 pf C Capacitor 100 nf C7 603 Capacitor 100 nf C Capacitor 100 nf C Capacitor 100 pf C Capacitor 100 pf C Capacitor 150 pf C Capacitor 180 pf C5 603 Capacitor 330 pf C Capacitor 6/15

7 Printed-circuit board references Table 1. Bill of materials for first PCB (continued) Designator Part type Footprint Description CRX14 U1 SO-16 ST card read coupler (type-b) PZT2222 Q2 SOT-223 NPN transistor WURTH FL3 805 WURTH FL4 805 WURTH FL5 805 WURTH FL1 805 WURTH FL2 805 option R7 603 Resistor 1.2 Printed-circuit board references of a standard solution for CRX14/CR14 Figure 5 and Figure 6 show the top and bottom layers of the PCB, respectively. Figure 7 provides the circuit and Table 2 gives the bill of materials. Figure 5. Top layer of second PCB 7/15

8 Printed-circuit board references UM0672 Figure 6. Bottom layer of second PCB 8/15

9 Printed-circuit board references Figure 7. Second PCB D1 1N4148 (OPTIONAL) C6 C8 82 pf 50 V 100 nf 50 V C5 OPT WURTH pf 50 V R8 ANT1 OPT C8' 0 R R1 OPT C3 L7 U1 C1 7 pf 50 V 22 pf 50 V R3 1 2 Vref 16 R5 3 RF IN RF OUT 15 22nF50V 4 E0 GND_RF 14 E0 5 E1 OSC1 13 X1 0 R E MHz C7 6 E2 OSC2 7 GND GND pf 50 V C7' 0 R E2 56 pf 50 V R2 0 R 8 GND SCL 10 R4 GND SDA 9 C2 R6 7 pf 50 V CRX14 ANT2 R7 0 R SCL SDA J1 + C4 22 μf 10V L5 L3 L4 L6 WURTH WURTH WURTH WURTH /15

10 Printed-circuit board references UM0672 Table 2. Bill of materials for second PCB Designators Part value or reference Part type Footprint C1 7 pf Capacitor 0603 C2 7 pf Capacitor 0603 C3 22 nf Capacitor 0603 C4 22 µf Capacitor 0603 C5 5 pf 50 V Capacitor 0603 C6 100 nf Capacitor 0603 C7 220 pf 50 V Capacitor 0603 C7' 56 pf 50 V Capacitor 0603 C8 82 pf 50 V Capacitor 0603 C8 22 pf 50 V Capacitor 0603 D1 Diode (optional, NC) 1210 J1 Connector HE14_4H L3 WURTH LED 0805 L4 WURTH LED 0805 L5 WURTH LED 0805 L6 WURTH LED 0805 L7 WURTH LED 0805 R1 Option Resistor 0603 R2 0 Ω Resistor 0603 R3 Option Resistor 0603 R4 0 Ω Resistor 0603 R5 Option Resistor 0603 R6 0 Ω Resistor 0603 R7 0 Ω Resistor 0603 R8 0 Ω Resistor 0603 U1 CRX14 RFID tag SO16 U MHz Crystal XTALCMS 10/15

11 Printed-circuit board references 1.3 Printed-circuit board references of a small antenna solution for CRX14/CR14 Figure 8 and Figure 9 show the top and bottom layers of the PCB, respectively. Figure 10 provides the circuit and Table 3 gives the bill of materials. Figure 8. Top layer of third PCB Figure 9. Bottom layer of third PCB 11/15

12 Printed-circuit board references UM0672 Figure 10. Third PCB C4 22 nf 50 V E0 E1 E2 100 nf 50 V C9 WURTH L1 U Vref RF IN RF OUT E0 GND_RF E1 OSC1 E2 OSC2 RESET GND OSC_SEL GND PLL GND SCL GND SDA CRX J1 SCL 1 GND 2 SDA 3 4 CONNECTOR + C10 22 μf 10V C5 7 pf Y MHz C6 7 pf C2 100 pf 50 V C2' opt C3 5 pf 50 V C1 150 pf 50 V C1' 120 pf 50 V ANT1 ANT2 ai /15

13 Printed-circuit board references Table 3. Bill of materials for third PCB Designators Part value or reference Part type Footprint C1 150 pf 50 V Capacitor 0603 C1 120 pf 50 V Capacitor 0603 C2 100 pf 50 V Capacitor 0603 C2 option Capacitor 0603 C3 5 pf 50V Capacitor 0603 C4 22 nf 50 V Capacitor 0603 C5 7 pf Capacitor 0603 C6 7 pf Capacitor 0603 C9 100 nf 50 V Capacitor 0603 C10 22 µf 10 V Capacitor 1210 L1 WURTH LED 0603 L2 WURTH LED 0805 L3 WURTH LED 0603 L4 WURTH LED 0603 L5 WURTH LED 0805 J1 Connector HE14_4H U1 CRX14 RFID tag SO16 U MHz Crystal XTALCMS 13/15

14 Revision history UM Revision history Table 4. Document revision history Date Version Changes 23-Jan Initial release. 14/15

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