ELMB2
Project description
ELMB2 is an analog/digital I/O module with CANbus interface. They are used in various CERN installations in control and monitoring of equipment. The ELMB2 is radiation qualified.
The ELMB2 is a pin-compatible version to the original ELMB. The ELMB2 is a fully backward compatible solution which preserves the existing infrastructure and has improved radiation tolerance as a result of the substitution of the most vulnerable components by more tolerant types.
Main features
-
AVR RISC architecture ATMEL Atmega128
- 128 Kbytes of on-chip flash memory,
- 4 Kbytes of SRAM,
- 4 Kbytes of EEPROM,
- In-System Programming via CAN bus
- Full CAN controller interface with PCA82C250
- 6 bit CAN identifier and 4 baud rates supported
- 3-wire SPI interface
- Real Time Counter with a separate 32 kHz crystal
- Timers
- 8-channel 10-bit ADC I/O lines available
-
Power regulators
- Separate regulator for the CAN bus transceiver and optocouplers
- Regulator for the microcontrollers
- Voltage converter 3.3V to 5.4V
-
Optional Delta-sigma ADC CRYSTAL CS5523 with 64 channel multiplexer
- 6 bipolar or unipolar input ranges from 25mV to 5V
- 100 pA input current on 25mV, 55mV and 100mV
- 10nA on 1V, 2.5V and 5V ranges
- 8 conversion rates from 2 Hz to 100Hz
- 64 channel multiplexer
- +5V and -5V on board power regulators
-
Mechanical dimensions
- The size of the printed circuit board is 50x67mm.
- The board is equipped with two connectors with 100 pins.
Project information
- Design files
- ELMB Radiation Test Reports (CERN internal)
- Users
- Frequently Asked Questions
Contacts
General question about project
- Vladimir Ryjov - CERN
Project Status
Date | Event |
---|---|
01-01-2010 | Start working on project. |
Radiation tests results available. | |
13-05-2020 | ELMB2 production ready. |
13 May 2020