The Analog Devices Inc. EVAL-ADM286xEEBZ Evaluation Boards include an onboard ADP7104 low dropout (LDO) regulator, which accepts an input voltage of 3.3V to 20.0V and regulates the voltage to a selectable 3.3V or 5.0V supply for the VCC pin of the ADM286xE. The LDO regulator can be bypassed to power the VCC pin of the ADM2867E directly.
A flexible logic VIO 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 nodes using either a 1.8V or 2.5V power supply. The VIO pin can also be supplied from the ADP7104 regulated supply.
The EVAL-ADM286xEEBZ comes with options to evaluate the ADM2867E in an individual system. Digital and RS-485 bus signals are accessible via the screw terminal blocks on the EVALADM286xEEBZ. Each digital input can be configured via the onboard jumper options.
Alternative methods can provide the transmit data input (TxD) signal to the device. An optional LTC6900 oscillator is included on the EVAL-ADM286xEEBZ and can be configured to provide a clock signal for the TxD digital input. For optimal signal integrity, the onboard SMA connector can be used to connect to an external data signal.