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UNISTBio-inspired Advanced Sensors Laboratory


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Greetings!
Bio-inspired Advanced Sensors (BIAS) Laboratory dreams of innovative microsystems for implementing future perception beyond five senses of human. We aim to realize them by using modern analog-mixed circuit design techniques, so that people can interface with nature, machine and even their own bodies with many electronic devices seamlessly.
Flash LiDAR Sensor
We develop a flash LiDAR sensor featuring an in-pixel hTDC based on a delta-intensity quaternary search (DIQS) technique. The proposed hTDC needs a minimum size of memory, two 9-b counters, realizing an 80×60 LiDAR without using a 3-D stacked process. It also attenuates common-mode noise, accomplishing real-time acquisition of depth images with 30 fps in a 9-m range at 30-klux background light.
Sub-µW Neural Recording Device
The spike signal in neural activities is an essential event but is fired rarely so that the spike detection can compress large amount of data efficiently. The proposed delta-modulation doesn’t only compress the signal dynamic range, but also enable to extract the amplitude and frequency component of the neural signal, recognizing the spike in the analog domain.
Analog IC Design
We develop various analog ICs including a ΔΣ-modulator, a temperature sensor, and an oscillator. The proposed Δ2-modulation realized by the 2nd-order IIR filter on the feedback significantly attenuates the magnitude of input signals, enhancing the DR and linearity. It also implemented with an amplifier-less structure and the PWM current DAC, achieving the smallest active area of 0.0308 mm2 with a high energy efficiency of 4.15-pJ/conv FoMw.

Latest News

Prof. Kim is invited to talk about LiDAR sensors in UESTC and HUST.

Posted on 04 Nov 2023
Prof. Kim is invited to the University of Electronics Science and Technology of China, Chengdu, and

All BIASians are attending A-SSCC 2023.

Posted on 04 Nov 2023
All lab members are attending the A-SSCC held at Haikou, Hainan, China, this year. Yongjae will pres

Jee-Ho’s paper is published in IEEE SSC-L!

Posted on 14 Apr 2023
Jee-Ho’s paper entitled “A VCO-Based 2nd-Order ∆2-∆∑ Modulator for Small Area and High E

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BiML's website is now open!
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