K5_1_Electrical

K5-505/K5-507 (Pre-Production Series Modules)

The University of Liverpool, The University of Manchester

Ashley Greenall
12/03/2003

Pre-Production Series Outer Modules using 'New' Patch Card

Modules have been mounted in Liverpool Cooling Box (see picture below).
The module(s)are mounted directly onto the cooling block.
The Box is 'grounded' to the module via the cooling block - the jumpers on the Patch Card are left out.
No common-mode chokes used.
Optical (Electro-optical Emulation) data route (Select = 0)

Nominal ABCD bias settings (FEShp = 30uA, FEBias = 220uA)
Nominal Vdet = 80V, Idet = 0.46uA
Thybrid = 38C

Opto-Emulation

The module is configured to be readout via the opto chips, the interconnection from the Driver Board to the module is made via a 5m screened Ethernet cable (CAT5). The input signals for the DORIC have been set so that they are switching at ~130uA. The DORIC is specified to expect input signals whose switching range is 60uA - 600uA (for a Logic 1).

K5-505 Results

Opto TrimRange
Opto ResponseCurve
Opto NoiseOcc
Opto TimeWalk

Module performance is:

Front-end Input noise, Link0 = 1442e, Link1 = 1456e;
Gain, Link0 = 56.94mV/fC, link1 = 56.36mV/fC;
Threshold variation (for TrimRange 0) , Link0 = 1.8mV, Link1 = 2.05mV.
Noise Occupancy, Link0 = 1.84x 10^-5.Link1 = 1.69x 10^-5.

There are 2 unbonded channels: 1 on Link0 and 1 on Link1.
3 Untrimmable channels on Link0 and 1 on Link1.

K5-507 Results

Opto TrimRange
Opto ResponseCurve
Opto NoiseOcc
Opto TimeWalk

Module performance is:

Front-end Input noise, Link0 = 1534e, Link1 = 1577e;
Gain, Link0 = 51.88mV/fC, link1 = 52.55mV/fC;
Threshold variation (for TrimRange 0) , Link0 = 2.5mV, Link1 = 1.99mV.
Noise Occupancy, Link0 = 3.14x 10^-5.Link1 = 3.06x 10^-5.

There is 1 unbonded channel on Link0.
3 Untrimmable channels on Link0 and 4 on Link1.

The Master Chip M8 (Link 1) has excess Input noise at 1670e - not known why.

NEW: Both modules have had the bonds on the Opto-chips reworked - Module readout can now be done through Link0 and Link1.
There is no discernable difference between results obtained when readout is either through a single link or both links (as one would expect).

Given the use of non-perfect ABCDs and hybrid temperature at 38C - module electrical performance looks good.

Last updated: 12/02/2003