Fig. 1. System of ROIC

Fig. 2. Working sequence of ROIC

Fig. 3. Voltage control delay circuit

Fig. 4. Preamplifier of pixel

Fig. 5. TDC circuit of pixel

Fig. 6. Picture of the ROIC, the chip and the pixel of the array ladar

Fig. 7. Simulation of equivalent input noise

Fig. 8. Simulation of transimpedance gain

Fig. 9. Data of the 5 μA input current@t1

Fig. 10. Data of the 5 μA input current at t1+1 ns