论文信息 - Implementation of current-to-voltage converter with wide dynamic range and its application

Implementation of current-to-voltage converter with wide dynamic range and its application

A current-to-voltage converter (CVC) with wide dynamic range and good linearity is presented, which consists of a trans-impedance amplifier (TIA), an adjusting current generator, and two ADCs. Main algorithm of the CVC is two-step conversion. First, a rough location of an input current is traced using one ADC, a coarse-ADC with N-bit resolution, and the input current shifts to the linear region of the TIA by current subtraction. Next, the other ADC converters the TIA output which corresponds to the shifted current. This converter is implemented using a 0.35 µm CMOS technology. Measurement results indicate that a maximum linear input current is enlarged by 2N times.

Cheol-Koo Hahn | Jae-Hyoun Park | Hyung-Do Yoon

[1] H. Zimmermann,et al. 220-MHz monolithically integrated optical sensor with large-area integrated PIN photodiode , 2006, IEEE Sensors Journal.

[2] Bedrich J. Hosticka,et al. Smart CMOS image sensor arrays , 1997 .

[3] Horst Zimmermann,et al. Transimpedance amplifier with 120 dB dynamic range , 2007 .

[4] J. Johnson. Hybrid infrared focal plane signal and noise model , 1999 .

[5] K. Bult,et al. A class of analog CMOS circuits based on the square-law characteristic of an MOS transistor in saturation , 1987 .

[6] Chunyan Wang,et al. Design of linear transimpedance amplifiers , 2001, ASICON 2001. 2001 4th International Conference on ASIC Proceedings (Cat. No.01TH8549).

[7] Carver Mead,et al. Analog VLSI and neural systems , 1989 .

[8] Chung-Yu Wu,et al. A new cryogenic CMOS readout structure for infrared focal plane array , 1997, IEEE J. Solid State Circuits.

[9] B.J. Hosticka,et al. A high dynamic range CMOS image sensor for automotive applications , 2000, Proceedings of the 25th European Solid-State Circuits Conference.

[10] Bhum-Cheol Lee,et al. Simple synchronizer to enhance time accuracy for legacy ethernet applications , 2009, 2009 International SoC Design Conference (ISOCC).

[11] Bedrich J. Hosticka,et al. CMOS imaging for automotive applications , 2003 .