128×128 dual-color ROIC with electrical crosstalk resistant design

Lü, Wei; Ding, Ran; Liu, Xiaoyang; Zhou, Chun

doi:10.1117/12.865926

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…The impedance of the readout circuit must be very small to collect the photo current. As the detector current increases, its impedance reduces [8]. The DI source impedance is 1/gm.…”

Section: A Pixel Circuitmentioning

confidence: 99%

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Buffer direct injection readout integrated circuit design for dual band infrared focal plane array detector

Sun

Shieh

et al. 2013

SPIE Proceedings

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This paper proposes dual-mode buffer direct injection (BDI) and direct injection (DI) readout circuit design. The DI readout circuit has the advantage of being a simple circuit, requiring a small layout area, and low power consumption.The internal resistance of the photodetector will affect the photocurrent injection efficiency. We used a buffer amplifier to design the BDI readout circuit since it would reduce the input impedance and raise the injection efficiency. This paper will discuss and analyze the power consumption, injection efficiency, layout area, and circuit noise. The circuit is simulated using a TSMC 0.35 um Mixed Signal 2P4M CMOS 5 V process. The dimension of the pixel area is 30×30 μm.We have designed a 10x8 array for the readout circuit of the interlaced columns. The input current ranges from 1 nA to 10 nA, when the measurement current is 10 pA to 10 nA. The integration time was varied. The circuit output swing was 2 V. The total root mean square noise voltage was 4.84 mV. The signal to noise ratio was 52 dB, and the full chip circuit power consumption was 9.94 mW.

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“…The impedance of the readout circuit must be very small to collect the photo current. As the detector current increases, its impedance reduces [8]. The DI source impedance is 1/gm.…”

Section: A Pixel Circuitmentioning

confidence: 99%

“…The pixel circuit design has to follow the infrared sensor specifications, while the power consumption of the pixel circuit will also have limitations. This means any design of the pixel circuit has to balance the circuit efficiency and complexity [6][7][8].…”

Section: Introductionmentioning

confidence: 99%