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EVAL-ADM2867EEBZ

 User Guide 

UG-1677

 

Rev. 0 | Page 9 of 12 

EVALUATION BOARD SCHEMATIC AND ARTWORK 

 

Figure 6. EVAL-ADM2867EEBZ Schematic 

 

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120Ω

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CC

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22060-

005

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+

A

B

C

Summary of Contents for EVAL-ADM2867EEBZ

Page 1: ...lated RS 485 transceiver The ADM2867E features an integrated isolated dc to dc converter that provides power to the isolated side of the device with no additional ICs required An on board ADP7104 low dropout LDO regulator accepts an input voltage of 3 3 V to 20 V and regulates the voltage to a selectable 3 3 V or 5 V supply for the VCC pin of the ADM2867E The LDO regulator can be bypassed to power...

Page 2: ...Evaluation Board Hardware 4 Setting Up the Evaluation Board 4 Input and Output Connections 4 Radiated Emissions 4 EN 55032 Radiated Emissions Test Results 5 Other Board Components 6 Full Duplex RS 485 Transceivers Loopback Test 7 IEC 61000 4 2 Electrostatic Discharge ESD Protection 7 Evaluation Board Schematic and Artwork 9 Ordering Information 11 Bill of Materials 11 REVISION HISTORY 5 2020 Revis...

Page 3: ...EVAL ADM2867EEBZ User Guide UG 1677 Rev 0 Page 3 of 12 EVALUATION BOARD PHOTOGRAPH Figure 1 22060 001 ...

Page 4: ...her because this connection shorts the power and ground pins together See Table 2 and Table 3 for more details on the jumper and power supply connections The corresponding labeled test points allow power supply monitoring on the EVAL ADM2867EEBZ with the probe referenced to ground INPUT AND OUTPUT CONNECTIONS Digital input and output signals are connected via the P2 and P3 screw terminal blocks to...

Page 5: ...tion LK1 A Connects the RE input of the ADM2867E to theVIO pin This setting disables the receiver B Connects the RE input of the ADM2867E to the RE terminal on the P2 connector C Connects the RE input of the ADM2867E to the GND1 pins This setting enables the receiver LK2 A Connects the DE input of the ADM2867E to the VIO pin This setting enables the driver B Connects the DE input of the ADM2867E t...

Page 6: ... Resistors for Bus Idle Fail Safe The ADM2867E has a built in receiver fail safe for the bus idle condition but there are footprints on the EVAL ADM2867EEBZ for fitting the R10 and R11 pull up resistors to the VISO supply on Pin A and Pin Y of the ADM2867E as well as the R12 and R13 pull down resistors to the GND2 supply pins on Pin B and Pin Z These resistors can be fitted if the user is connecti...

Page 7: ...The EVAL ADM2867EEBZ is tested to achieve protection against IEC 61000 4 2 ESD to 12 kV contact and 15 kV air on Pin A Pin B Pin Y and Pin Z of the ADM2867E The IEC 61000 4 2 ESD standard describes testing using two coupling methods known as contact discharge and air discharge Contact discharge implies direct contact between the discharge gun and the equipment under test EUT During air discharge t...

Page 8: ...d 5 5 V 3 3 V isolated output High Not used PowerVCC directly on connector P1 with a supply voltage between 4 5V and 5 5V 5 V isolated output B Low 6 V to 20 V Regulator provides 5 V supply to VCC 3 3 V isolated output High Invalid condition 5V isolated output is not supported withVCC 4 5V B High C Low 4 V to 20 V Regulator provides 3 3 V supply to VCC 3 3 V isolated output High 6 V to 20 V Regula...

Page 9: ...1 P3 P2 P1 LK5 LK4 R13 R12 RT2 RT1 P7 P8 E2 E1 LK7 LK6 LK2 LK1 U2 U1 U3 INVR_1 TxD_1 VREG VCC GND1 VREG_IN RE_1 DE_1 VCC TxD_1 VIO VREG VREG_IN VIO A Z GND VIO INVD_1 VIO RxD DE TxD INVD INVR Y VIO VIO VIO B VISO VISO VISO 2 1 1 2 2 2 2 1 1 3 2 1 2 1 3 2 1 3 1 2 3 1 6 4 2 5 3 1 5 3 1 6 4 2 3 2 1 3 2 1 2 2 1 1 2 2 1 1 8 6 4 2 7 5 3 1 6 4 2 5 3 1 1 8 2 7 PAD 4 6 3 5 1 3 5 2 4 18 17 27 25 23 7 4 11 8...

Page 10: ... 1677 EVAL ADM2867EEBZ User Guide Rev 0 Page 10 of 12 Figure 7 EVAL ADM2867EEBZ Component Side Layer 1 Figure 8 EVAL ADM2867EEBZ Layer 2 Figure 9 EVAL ADM2867EEBZ Silkscreen 22060 006 22060 007 22060 008 ...

Page 11: ...n 3 2 0 1 inch headers and shorting block Multicomp 2213S 06G 1 LK2 8 pin 4 2 0 1 inch header and shorting block Multicomp 2213S 08G 1 LK3 3 pin 3 1 0 1 inch header and shorting block Molex 22 28 4033 5 LK6 LK7 LK9 to LK11 2 pin 1 2 0 1 inch headers and shorting block Harwin M20 9990246 5 P1 to P3 P7 P8 Three way terminal blocks Wurth Elektronik 691131710003 3 R1 R3 R7 R8 Resistors 0 Ω 0603 Vishay...

Page 12: ...he EvaluationBoard or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board including but not limited to soldering or any other a...

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