Analog Devices Inc. EVAL-ADM2895EEBZ Evaluation Board for ADM2895E
Analog Devices EVAL-ADM2895EEBZ Evaluation Board allows simplified, efficient evaluation of the ADM2895E/ADM2895E-1, 5.7kVRMS, 250kbps (ADM2895E) half-duplex signal and power-isolated RS-485 transceiver. The EVAL-ADM2895EEBZ can also be used to evaluate the higher-speed 20Mbps (ADM2895E-1) by replacing the low-speed part with the higher-speed part.
The Analog Devices ADM2895E/ADM2895E-1 features an integrated, isolated DC-to-DC converter that provides power to the isolated side of the device with no additional ICs required. The EVAL-ADM2895EEBZ has options for evaluating the ADM2895E/ADM2895E-1 device in an individual system. The screw terminal blocks on the EVAL-ADM2895EEBZ make digital and RS-485 bus signals easily accessible. The onboard jumper options can configure each digital input.
An onboard ADP7104 low dropout (LDO) regulator accepts an input voltage of up to 20V and outputs a range of selectable supply voltages to the VCC pin, configurable by jumper options. The LDO regulator can be bypassed to power the ADM2895E/ADM2895E-1 VCC supply pin directly from an external power supply.
Features
- Simplified evaluation of the ADM2895E/ADM2895E-1 250kbps half-duplex isolated RS-485 transceiver
- 2-layer PCB compliant to EN 55032 Class B radiated emissions
- Footprint for 10mm × 10mm, 28-lead SOIC_FP package with >8.0mm creepage and clearance
- Onboard ADP7104 LDO regulators with jumper options for simplified evaluation in multiple supply configurations
- Flexible, low-voltage VI/O supply rail for interfacing with I/O nodes as low as 1.7V
- Selectable 3.3V or 5V isolated VISOOUT supply
- IEC 61000-4-2 ESD protection on Pin A and Pin B 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
- Heating, ventilation, and air conditioning (HVAC) networks
- Industrial field buses
- Building automation
- Utility networks
- Energy meters
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. ADM2895E/ADM2895E-1 RS-485 Transccievers
Signal and power isolated RS-485 transceivers with ±60V fault protection on the RS-485 A and B pins.