A Hybrid Integrated Circuit for Multiwire Proportional Chambers

From the performance data measured, it appears that the SH0997 and SH1153 prototypes come very close to meeting all the significant points of the joint Laboratory specification. The major exception noted, that of non-ideal matching of thresholds, appears to be a question of procedure and not a fundamental limitation. This is reinforced by the fact that Fairchild is maintaining the 1 mV minimum sensitivity specification. Similarly, the problem of the fast OR width and the Read gate error appear easily soluble. The operation of the SH11153 appears to meet all significant specifications. In both units, all signals are exceptionally clean and inter-channel crosstalk appears insignificant for either polarity of overdrive. With the corrections noted, it appears that future units should meet or exceed all the major points of the joint Laboratory specifications for proportional wire chamber integrated circuits.