The EVAL-ADM2495EEBZ 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 EVAL-ADM2495EEBZ comes with options for the evaluation
of the ADM2495E/ADM2495E-1 device in an individual system.
Digital and RS-485 bus signals are easily accessible via the screw
terminal blocks on the EVAL-ADM2495EEBZ. Each digital input can
be configured via the on-board jumper options.
Two on-board 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 theADM2495E/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.
Different methods can be used to provide the transmit data input
(TxD) data input signal to the device. An optional LTC6900 oscillator
is included on the EVAL-ADM2495EEBZ and can be configured
to provide a clock signal as the TxD digital input within a 10kHz
to 20MHz range. Jumper settings allows frequency selections of
10kHz, 100kHz, 1MHz, 10MHz or TBD based on the value of
a customer installed 0603 resistor. Note that frequencies above
125kHz are intended for when the higher speed ADM2495E-1 part
is installed. A terminal block allows an easy wired connection to
a microcontroller or processor. For optimal signal integrity, use the
on-board subminiature version A (SMA) connector to connect an
external data signal.
Please see the User Guide for the full description.
