Hardware Status and Plans of the Embedded Local Monitor Board

1
Hardware Status and Plans of the Embedded
Local Monitor Board
2
Introduction
There is a need for a general-purpose Detector
Front-End I/O Control System which can be
embedded in the detectors.

• to monitor voltages, currents, temperatures, ..
• to control power supplies, cooling system, ...
• to read and write status bits
• to check in-system programmable devices
• via serial control e.g. JTAG and I2C

3
Introduction to ELMB
4
Development of the ELMB is motivated by

• Radiation
  Problems
• Total Ionising Dose TID CMOS
  MUX
• Non-Ionising Energy Loss NIEL
  Optocouplers
• Single Even Effects SEE
  Memory bit errors
• Magnetic Field (1.5T to 0.1T) DC-DC converters
  
• Access restriction - should work 24h and 365
  days/year
• I/O points distributed over the whole detector
  volume lt100m
• Standardised connections to the SCADA
• Hardware CANbus / LAN
• Software CANopen, OPC, TCP/IP

5
and furthermore...

• Reduced design effort by individual institutes
• Common Open Embedded Software
• templates, libraries
• Spares and maintence during the detector lifetime
  (15 years)
• Low power consumption
• cables, local power supplies
• Commercial low cost
• in ATLAS several thousands will be needed
• Common effort
• People from many subdetectors involved in HW and
  SW.

6
ELMB block diagram
7
ELMB block diagram
Alternative to the ADC?
8
ELMB front side
ISP
CAN optos
50mm
ADC optos
DIP-SW ID BAUD
CAN
66 mm
9
ELMB back side ADC
ADC
Analog MUX
250 pin Bergstac connector
10
ELMB specifications

• General-purpose plug-on module (50 x 60 mm2)
• CANbus interface (Full-CAN controller)
• CANopen communication protocol
• Powerful 8-bit RISC Microcontrollers
• In System Programmable also via CAN bus
• second microcontroller with dedicated tasks
• Optional 64 inputs of 16-bit ADC with 7 bit gain
• General I/O
• with 18 I/O, 8 Out and 8 IN (or ADC), 3 wire SPI
• Flexible power supply circuits incorporated (4 )
• Est. cost is 2 / ch for ADC CAN

11
Measurements of theELMB Current Consumption
12
Measurements
13
2.5 to 4V operation of the 5V ELMB
14
Power ELMB

• CAN controller 20mA _at_ 5V (CAN specs)
• Microcontrollers Digital I/O
• 5V 33mA
• 3.3V 15mA
• ADC 10mA _at_ 5V
• OK for operation of the 5V ELMB with
• digital I/O in a 3.3V system
• with voltage doubler ADP3607

15
ELMB ADC
16

Crystal CS5523
Delta-Sigma ADC 2 Hz to 100 Hz 25 mV to 5 V
differential
Resolution 16 7 Bits CMR DC, 50Hz 120
dB Linearity 0.0015 FS Offset
2 LSB Stability 20 nV /
ºC Gain 1 ppm/ ºC
Not Accurate has to be calibrated!
17
ELMB ADC
1uV
18
ELMB ADC
19
High precision temperature principle
After calibration 3 mK precision at ATLAS LAr
calorimeter
20
ELMB Motherboard for prototypes and tests
21
ELMB motherboard for tests in DIN rail housing
22
Motherboard

• Signal adapaters for PT100, NTC and voltages
• 18 pin DIL sockets
• Plug-in on back-side
• One for every 4 inputs
• Many type of sensors
• can be mixed

23
ELMBRadiation Tolerance Critieraaccording to
the ATLAS POLICY ON RADIATION TOLERANT
ELECTRONICS
ELMB ----- Will be used in MDT and in TGC.
Contains CMOS devices, bipolar devices, and
optocouplers. Foreseen radiation constraint in
MDT barrel 1 - TID 4.7 Gy x 3.5 x
5 x 4 330 Gy 33 krad in 10
years - NIEL 3.0E10 n/cm2 x 5 x 1 x 4
6.0E11 n/cm2 (1 MeV eq.) in 10years - SEE
5.4E9 h/cm2 x 5 x 1 x 4 1.1E11 h/cm2
(gt20 MeV) in 10 years.
24

Quant Component Techn. TID
(Gy) NIEL (n/cm2) SEE
Comments 1 ATMEGA103-6AC CMOS -
- - NEW 1
AT90S2313-10SC CMOS 300 10 13
- If not
programmed during irradiation 1
SAE81C91 CMOS 300 10 13
- 1 PCA 82C250T Bipolar 30
0 10 13
- 3 MIC5203-5.0BM4TS Bipolar -
- - NEW 1
MIC2754MBM5TS CMOS - -
- NEW 1
ADP3607AR CMOS - -
- NEW 2 HCPL-0601 Opto
- - -
NEW 5 BAV70W diode Bipolar 300
10 13 - 4
BAT54W diode Bipolar -
- - NEW 1
74HC1G66GW CMOS - -
- NEW 1
CSTCC8.00MG Quartz - -
- NEW 2 Quartz 32kHz
SMD Quartz 300 10 13
- 1 CS5523-AS CMOS - -
- NEW, better specs 16
MAX4582CEE CMOS - -
- NEW, Analog Devices TID failed
(75Gy) 1 AD680JR Bipolar 300 10
13 - 1
MAX871EUK CMOS - - -
NEW 1 NC74S14M5 P CMOS -
- -
NEW 1 74HC74ADT CMOS -
- -
NEW 4 NC7SZ00P5 CMOS -
- - NEW
3 HCPL-0731 Opto 300 gt3 10 12
- Siemens
NIELfailed at 3 1011 n/cm2 1 LMC6064
CMOS CMOS - - -
NEW
25
Measurements on optocoulers
26
Summary Status of H.W.

• The printed circuit board of the ELMB has been
  tested and is ok!
• (Only fixation holes 1.6mm instead of 2.4mm)
• 20 pc is in production (15 Oct 2000)
• Printed circuit board of the Motherboard is ready
• 20 prototypes will be available end of Oct 2000
• Radiation tests are planned for February 2001
• A first series of the ELMB will be produced to
  the Summer of 2001.
• Some components are on allocation!