NCN8025AEVB Evaluation Board Manual for NCN8025A QFN-24 Prepared By: Philippe Andre http://onsemi.com EVALUATION BOARD MANUAL INTRODUCTION This document has to be used with the NCN8025A datasheet. The datasheet contains full technical details regarding the NCN8025A specifications and operation. The board (FR4 material) is implemented in two metal layers. The top and bottom layers have thicknesses of 35 mm. The PCB thickness is 1.6 mm with dimensions of 89 mm by 68 mm (see Figure 1). This document gives a detailed description of the NCN8025A Evaluation Board (QFN-24 version) with the Bill Of Material (BOM), board schematic and layout. The appropriate lab test setups are also provided. The NCN8025A Evaluation Board has been designed to help for a quick evaluation of the NCN8025A Compact and Cost-Effective Smart Card Interface device. Figure 1. Demo Board EQUIPMENT Description Regulated Power Supply Example of Equipment (Note 1) Main Features 200 mA DC current capability Multimeter Sourcemeter Qty. Tektronix PS2520G 2 Keitley 2000 or 2001 2 Keitley 2400 1 Oscilloscope 500 MHz Bandwidth, four channel scope, min 1 Mbit memory per channel (Note 2) Tecktronix TDS744, 754 or 784 / TDS5054 series or Lecroy WR5060 TDS5104B, 1 GHz, 5GS/s 1 Voltage probe 4 probes 500 MHz Bandwidth Tektronix or Lecroy 4 Waveform generator Pattern genarator Agilent 81104A 80 MHz or HP8110A 150 MHz 2 outputs 1 External Clock Input 1 SMB Cable 1. Equipment used in the context of this Application Note Manual. 2. Greater Scope memory per channel offers better resolution. © Semiconductor Components Industries, LLC, 2011 April, 2011 − Rev. 0 1 Publication Order Number: NCN8025AEVB/D NCN8025AEVB TEST PROCEDURE “digital” power supply which biases the input stages of the NCN8025A device (control and signal inputs). VDD and VDDP must be connected to the board to ensure correct operation. Connect the VDD and VDDP power supplies using the 2 pin male connectors J2 and J1 respectively. See Figure 2. Initial Setups The initial setups given here are recommended before starting measurements on the board. • Set the CMDVCC/ in the OFF position (High). • Set CLKDIV1 and CLKDIV2 into low position (lowest frequency Fclkin) • 2 pins are used to change the Card VCC power supply or the smart card interface mode which can be 1.8 V, 3.0 V or 5.0 V. These 2 pins are VSL0 and VSEL1 and on the board, changing VSEL0 and VSEL1 is done using 2 corresponding switches (see Figure 2) according to the below Table 1. When VSEL0 = 0 then VSEL1 is in the mode 5 V/3 Vbar, when VSEL0=1 then VSEL1 is in the mode 1.8 V / 3 Vbar. The initial setup can be VSEL0 = 0 and VSEL1 = 1 for selecting the 5 V mode. The card VCC (CVCC) output voltage cannot be changed on the fly when the smart card interface is active (/CMDVCC = Low). For changing card VCC it is necessary to deactivate the device then to reconfigure the card VCC by setting the appropriate VSEL0 and VSEL1 finally the smart can be activated again with this new smart card power supply voltage. Clock Frequency CLKDIV1 and CLKDIV2 select the frequency divider according to the table given below. Table 2. Clock Division Ratio Programming CLKDIV1 CLKDIV2 Divider 1 0 DIV 1/1 1 1 DIV 1/2 0 1 DIV 1/4 0 0 DIV 1/8 Card Presence The socket we use is a normally open, so PRES/ has been chosen; nevertheless the PRES and PRES/ test points can also be used for signaling the presence of a card and starting up the circuit. The Clock Table 1. CVCC Programming The clock is applied externally (SMB connector). VSEL0 VSEL1 CVCC 0 0 3.0 V 0 1 5.0 V 1 0 3.0 V 1 1 1.8 V Start the Measurement To start the measurments, set the board as it follows: • Set CLKDIV1 and CLKDIV2 to select the correct • • • As a precaution, turn the 1 kW potentiometer to obtain a resistor output value of 1 kW, and then connect the jumper. • DC Power Supplies frequency. Set 5 V / 3 Vbar to select the correct output voltage. Jumpers: − 1 kW potentiometer jumper: not connected to start the measure. Finally, toggle /CMDVCC from High to Low to start the device (activation sequence run). Two power supplies are used to bias the demo board. VDDP is the input voltage of LDO Regulator. VDD is the http://onsemi.com 2 NCN8025AEVB Ground Connection /CMDVCC Switch Smart Card Socket (Bottom) Ground Connection Card VCC Load 1 kW Potentiometer C8 C4 IDDP Current VDDP Power Supply VSEL0 Switch VSEL1 Switch Ground Connection http://onsemi.com Device Under Test (NCN8025A) C6 C7 C2 C3 CLKDIV2 Switch Figure 2. Board Description 89 mm C5 C1 ICC IDD CLKDIV1 Current VDD Current Switch Power Supply Ext. CLK (CLKIN) SMB Connector 3 68 mm NCN8025AEVB Figure 3. Board Schematic http://onsemi.com 4 NCN8025AEVB Bill of Material Designator Qty Description Value Tol Footprint Manufacturer Manufacturer Part # Lead Free C1 1 CAP CER 10UF 6.3V 20% X5R 0805 10uF 20% 0805 Murata GRM21BR60J106ME19L Yes C2, C6, C7 3 CAP CER .1UF 25V 10% X7R 0805 100nF 10% 0805 Murata GRM21BR71E104KA01L Yes C3, C4 2 CAP CER .1UF 25V 10% X7R 0603 100nF 10% 0603 Murata GRM188R71E104KA01D Yes C5 1 CAP CER .22UF 16V X7R 10% 0805 220nF 10% 0805 TDK Corporation C2012X7R1C224K Yes C8, C9, C10, C15 4 CAP CER 33PF 16V X7R 0603 33pF 5% 0603 AVX Corporation Do not populate Yes C11 1 CAP CER .33UF 16V X7R 10% 0805 330nF 10% 0805 TDK Corporation C2012X7R1C334K/1.25 Yes C12, C13, C14 3 Do not populate 80pF - 0603 Do not populate Do not populate - C16 1 Do not populate 100pF - 0603 Do not populate Do not populate - C17 1 CAP CERAMIC 22PF 50V NP0 0603 22pF 5% 0603 Yageo CC0603JRNP09BN220 Yes R1 1 Do not populate Open - 0805 Do not populate Do not populate - R2, R3, R11, R12, R13, R14, R15 7 RES 0.0 OHM 1/8W 0603 SMD 0R - 0603 Stackpole Electronics Inc RMCF0805ZT0R00 Yes R4, R6, R7, R9, R10 5 CMS resistor 1%, 1/4W 10k 1% 0603 Philips Components 232272461003 Yes R5 1 Single turn Cermet trimmer, 1k, 0.5W, 10% 1k - CERMET-72P T Bourns 3386F-102LF-ND Yes R8 1 CMS resistor 1%, 1/4W 100k 1% 0805 Philips Components 232272461004 Yes SW1 to SW5 5 PCB slide switches - - INTER3-2,54 EAO 09.03290.01 Yes TP1 to TP11, TP13, TP14, TP16, TP18 to TP21 18 Clip Test Point, Hole Diameter 1.0mm (0.040 mil) - - TP_1.0MMHO LE_KEYSTON E_5000 Keystone 5000 Yes TP12, TP15, TP17, TP22 4 Clip Test Point, Hole Diameter 1.6mm (0.063 mil) - - TP_1.6MMHO LE_KEYSTON E_5010 Keystone 5010 Yes J1,J2 2 VDD, VDDP, 2-Pins Male Connector, 5.08mm Step - - MSTBA2 Phoenix Contact MSTBA2.52G5.08 Yes http://onsemi.com 5 NCN8025AEVB Bill of Material Designator Qty Description Value Tol Footprint Manufacturer Manufacturer Part # Lead Free J3, J4, J8 3 IDD, IDDP, LOAD, Breakable Single Row Header (2 Pins) - - CON2-2.54 TYCO Amp 5-826629-0 Yes J5, J6, J7 3 Ground Strap, Brass, Diameter 1.0mm, Pitch 10.16mm, Height 9.9mm - - GND_STRP HARWIN D3082-46 Yes J9 1 SMB connector - - SMB/V IMS 111510001 Yes U1 1 NCN8025A Smart Card Interface - - QFN 24 4X4 ENGINEERIN G ON Semiconductor NCN8025AMNTXG Yes U2 1 Smart card socket - - SMARTCARD _FCI_74343L 0825S01 FCI 7434L0825S01LF Yes none 4 Standoff nut - - STANDOFF HOLE Keystone Electronics 1903C Yes none 4 Standoff screw - - STANDOFF HOLE Keystone Electronics 4814K-ND Yes ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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