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Abstract

A photodetector array and method for making the same are disclosed. The photodetector array includes a two-dimensional array of pixels and a controller. Each pixel includes a photodetector and a readout circuit, the readout circuit coupling that pixel to a corresponding bit line when a readout signal is received on a corresponding row line. The controller generates the row selection commands and processes signals on the bit lines. The photodetector array is divided into a plurality of sub-chips fabricated on a semiconductor substrate and having a plurality of metal conductors overlying the substrate. The sub-chips include a plurality of slave sub-chips, each slave sub-chip includes a row decode circuit, and a plurality of the rows of pixels, the row decode circuit in one of the slave-sub-chips providing the readout signals on row lines in that sub-chip in response to one of the row selection commands.

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First Claim