Analog Devices Inc. EVAL-ADM2495EEBZ Evaluation Board for ADM2495E
Analog Devices EVAL-ADM2495EEBZ Evaluation Board allows simplified, efficient evaluation of the ADM2495E 5.7kVRMS, 250kbps half-duplex signal isolated RS-485 transceiver. The EVAL-ADM2495EEBZ can also be used to evaluate the higher-speed 20Mbps ADM2495E-1 by replacing the low-speed part with the higher-speed part.
The Analog Devices EVAL-ADM2495EEBZ offers options for evaluating the ADM2495E/ADM2495E-1 device in an individual system. The screw terminal blocks on the EVAL-ADM2495EEBZ make digital and RS-485 bus signals easily accessible, and the onboard jumper options allow for configuring each digital input.
Two onboard ADP7104 low-dropout (LDO) regulators accept an input voltage of up to 20V and output a range of selectable supply voltages to the VDD1 and VDD2 pins, configurable via jumper options. The LDO regulators can be bypassed to power the ADM2495E/ADM2495E-1 VDD1 and VDD2 supply pins directly from external power supplies.
The flexible VDD1 pin primary side logic supply allows the device to operate with a digital input/output (I/O) voltage from 1.7V to 5.5V, which enables communication with modern processors using either a 1.8V or 2.5V power supply.
Features
- Simplified evaluation of the ADM2495E/ADM2495E-1 250kbps half-duplex isolated RS-485 transceiver
- 2-layer PCB compliant to EN 55032 Class B radiated emissions
- Footprint for 10mm × 10mm, 16-lead SOIC_W package with >8.0mm creepage and clearance
- Onboard ADP7104 LDO regulators with jumper options for simplified evaluation in multiple supply configurations
- Flexible, low-voltage VDD1 supply rail for interfacing with I/O nodes as low as 1.7V
- IEC 61000-4-2 ESD protection on the A pin and B pin with ±4kV contact discharge
- SMA connector for TxD input signal
- Optional onboard LTC6900 oscillator for providing TxD signal
- Screw terminal blocks for connecting power, digital, and RS-485 signals
- Jumper-selectable enable and disable for digital input signals
- Resistors and footprints for termination
- Test points for measuring all signals
Applications
- Solar inverters
- Electrical test and measurement
- Industrial field buses
- Heating, ventilation, and air conditioning (HVAC) networks
- Building automation
Kit Contents
- EVAL-ADM2495EEBZ evaluation board
Required Equipment
- Oscilloscope
- Signal generator (optional)
- 3V to 5.5V supply
- 1.7V to 5.5V supply (optional)
Loopback Test Setup
Board Layout
Related Transceivers
Analog Devices Inc. ADM2495E/ADM2495E-1 RS-485 Transceivers
5.7kVRMS, signal-isolated RS-485 transceivers with ±60V fault protection on the RS-485 A and B pins.