A 10 Gb/s noise-canceled transimpedance amplifier for optical communication receivers

Qasemi, Seyed Ruhallah; Rafati, Maryam; Amiri, Parviz

doi:10.1007/s10470-019-01546-3

Cited by 5 publications

(2 citation statements)

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“…The SF topology provides a transimpedance amplification equal to the feedback resistor, which is independent of the circuit's biasing condition and polarities of input current. This topology provides low input impedance resulting in a high BW [10]. In Fig.…”

Section: The Transimpedance Amplification Stagementioning

confidence: 99%

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A configurable fluorescence sensing front-end for ultra-low power and high sensitivity applications

Rafati

Qasemi

Alvandpour

2021

Analog Integr Circ Sig Process

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This paper presents an ultra-low power, high sensitivity configurable CMOS fluorescence sensing front-end for implantable biosensors at single-cell level measurements. The front-end is configurable by a set of switches and consists of three integrated photodiodes (PD), three transimpedance amplifiers (TIA) for detecting a current range between 1 pA up to 10 mA. Also, an ambient light canceling technique is proposed to make the sensor operate under different environmental conditions. The proposed front-end could be configured for ultra-low light detection or ultra-low power consumption. The circuit is designed and fabricated in a 0.35 µm standard CMOS technology, and the measurement results are presented. The minimum integrated input-referred current noise is measured as 1.07 pA with the total average power consumption of 61.8 µW at an excitation frequency of 80 Hz. For ultra-low-power configuration, the front-end has an average power consumption of 119 nW and input integrated current noise of 210 pA at an excitation frequency of 20 kHz.

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Section: The Transimpedance Amplification Stagementioning

confidence: 99%

“…The value of the bulk-driven resistor,R F , can be calculated as (7), defining DV ¼ V m À V in , two cases of (8) or (9) for the R F happens. In either case the G DS;MTR is calculated as (10) [11].…”

Section: Small Signal Analysis Of Tia Stagesmentioning

confidence: 99%