Bias Card Rev F0 to Rev F1/F2 Changes
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Contents
ECO-055
- Module Name: Bias Card
- Module Number: ELE_C583_101
- Change From: Rev. F0 Change To: Rev. F1
- Change Request #: ECO-055
- Date:Nov. 5, 2010, Requested by:GPD
Problem Description
To lower power consumption of Bias Cards, removed L12 and L13 in order to disable the low noise bias circuitry. Regulators U34 and U35 generating nets p5VA_LN and n5VA_LN disabled. Saves ~240mA on pVa supply, and ~195mA on nVa supply or a total of ~2.7W power saving.
Change Description
- Remove L12 and L13 (PN: 000308 IND, Supplier Newark 72K6792, Fair-Rite 2743019447 Ferrite Bead Z47)
- Relabel the card as Rev. F1
ECO-058
- Module Name: Bias Card
- Module Number: ELE_C583_101
- Change From: Rev. F1 Change To: Rev. F2
- Change Request #: ECO-058
- Date:Feb. 28, 2011, Requested by:TF
Problem Description
To save manufacturing cost, we are replacing 2x267Ohm 10ppm resistors (long lead time) with 1x133Ohm 10ppm resistor.
Change Description
- Change R62, R63 to DNP on all 12 channels. (total of 24 resistors)
- Change R52, R53 to 133Ohm 10ppm (PN=002365) on all channels (total of 24 resistors)
- Relabel the card as Rev. F2
