EVAL-ADM2565EEBZ/EVAL-ADM2865EEBZ User Guide UG-1725 One Technology Way P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 www.analog.com Evaluating the 3 kV RMS ADM2565E and the 5.7 kV RMS ADM2865E, Signal and Power Isolated, RS-485 Transceivers with 15 kV IEC ESD ADM2865E transceivers are available in a small footprint, FEATURES 10.15 mm 10.05 mm, 28-lead, small outline, wide body, with Simplified evaluation of the ADM2565E and ADM2865E fine pitch (SOIC W FP) package. 25 Mbps half-duplex, isolated RS-485 transceivers 2-layer PCB compliant to EN 55032/CISPR 32 Class B radiated The ADM2565E and the ADM2865E both feature an integrated, emissions isolated, dc-to-dc converter that provides power to the isolated Footprint for 10.15 mm 10.05 mm, 28-lead SOIC W FP side of the device with no additional ICs required. package with 8.3 mm creepage and clearance An on-board ADP7104 low dropout (LDO) regulator accepts On-board ADP7104 LDO regulator with jumper options for an input voltage of 3.3 V to 20 V and regulates the voltage to a simplified evaluation in 5 V or 3.3 V configuration selectable 3.3 V or 5 V supply for the VCC pin of the ADM2565E Flexible, low voltage V supply rail for interfacing with I/O IO and the ADM2865E. The LDO regulator can be bypassed to power nodes as low as 1.7 V the V pin of the ADM2565E and the ADM2865E directly. Selectable 3.3 V or 5 V isolated supply voltage options CC available A screw terminal connector on the evaluation boards allows ESD protection on the RS-485 A and B pins connection to the flexible VIO logic supply pin of the ADM2565E 12 kV IEC 61000-4-2 contact discharge and the ADM2865E. This connection allows the ADM2565E 15 kV IEC 61000-4-2 air discharge and the ADM2865E to operate with a digital input/output (I/O) SMA connector for high speed 25 Mbps TxD input signal voltage from 1.7 V to 5.5 V, which enables communication with Optional on-board LTC6900 oscillator for providing TxD nodes using either a 1.8 V or 2.5 V power supply. The V pin IO signal can also be supplied from the ADP7104 regulated supply. Screw terminal blocks for connecting power, digital, and RS-485 signals Digital and RS-485 bus signals are easily accessible via the screw Jumper selectable enable and disable for digital input terminal connectors on each evaluation board. Each digital input signals can be configured via the on-board jumper options. Resistors and footprints for loopback test and termination Alternative methods can provide the transmit data input (TxD) Test points for measuring all signals signal to the ADM2565E or the ADM2865E. An LTC6900 EVALUATION KIT CONTENTS oscillator is included on each evaluation board and can be EVAL-ADM2565EEBZ or EVAL-ADM2865EEBZ optionally configured to provide a clock signal for the TxD EQUIPMENT NEEDED digital input within a 1 kHz to 12.5 MHz range. For optimal signal integrity, use the on-board Subminiature Version A Oscilloscope (SMA) connector to connect an external data signal at high data Signal generator rates up to 25 Mbps. 3 V to 5.5 V supply 1.62 V to 5.5 V supply The EVAL-ADM2565EEBZ is populated with the ADM2565E DOCUMENTS NEEDED 3 kV rms isolated RS-485 transceiver, and the EVAL- ADM2865EEBZ is populated with the ADM2865E 5.7 kV rms ADM2565E data sheet isolated RS-485 transceiver. The two evaluation boards differ ADM2865E data sheet only by the isolated RS-485 device populated on U3. GENERAL DESCRIPTION For full details on the ADM2565E or the ADM2865E, see the The EVAL-ADM2565EEBZ and the EVAL-ADM2865EEBZ allow ADM2565E data sheet or the ADM2865E data sheet, which the simplified, efficient evaluation of the 3 kV rms ADM2565E must be consulted in conjunction with this user guide when and the 5.7 kV rms ADM2865E signal and power isolated, half- using the EVAL-ADM2565EEBZ or the EVAL-ADM2865EEBZ. duplex RS-485 transceivers, respectively. The ADM2565E and the PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 Page 1 of 12 UG-1725 EVAL-ADM2565EEBZ/EVAL-ADM2865EEBZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Radiated Emissions ...........................................................................5 Evaluation Kit Contents ................................................................... 1 EN 55032 Radiated Emissions Test Results ...............................6 Equipment Needed ........................................................................... 1 Other Board Components............................................................6 Documents Needed .......................................................................... 1 RS-485 Transceiver Loopback Test .............................................7 General Description ......................................................................... 1 IEC 61000-4-2 Electrostatic Discharge (ESD) Protection .......8 Revision History ............................................................................... 2 Evaluation Board Schematics and Artwork ...................................9 Evaluation Board Photographs ....................................................... 3 Ordering Information .................................................................... 11 Evaluation Board Hardware ............................................................ 4 Bill of Materials ........................................................................... 11 Setting Up the Evaluation Board ................................................ 4 Input and Output Connections .................................................. 5 REVISION HISTORY 8/2020Revision 0: Initial Version Rev. 0 Page 2 of 12