iC-LF1401 is an integrating light-to-voltage converter with a line of 128 pixels pitched at 63.5 µm (center-to center distance). Each pixel consists of a 56.4 µm x200 µm photodiode and an integration capacitor with a sample-and-hold circuit.
The integrated control logic makes operation very simple, with only a start and clock signal necessary. A third control input (DIS) enables the integration to be suspended at any time (electronic shutter).
When the start signal is given hold mode is activated for all pixels simultaneously with the next lead ing clock edge; starting with pixel 1 the hold voltages are switched in sequence to the push-pull output ampli?er. The second clock pulse resets all integration capacitors and the integration period starts again in the background during the output phase. A run is complete after 128 clock pulses.
iC-LF1401 is suitable for high clock rates of up to 5 MHz. If this is not required the supply current can be reduced via the external bias setting (current into pin RSET).