Title
In-Panel 31.17dB 140kHz 87W Unipolar Dual-Gate In-Ga-Zn-O Charge-Sense Amplifier for 500dpi Sensor Array on Flexible Displays
Author
Papadopoulos, N.
Steudel, S.
de Roose, F.
Eigabry, D.M.
Kronemeijer, A.J.
Genoe, J.
Dehaene, W.
Myny, K.
Publication year
2018
Abstract
In this paper a charge sense amplifier (CSA) using a 5μm In-Ga-Zn-O transistor technology on 15μm thick flexible substrate is presented for readout of a 500dpi fingerprint sensor array targeting direct integration with active matrix organic light emitting displays (AMOLED). The CSA achieves a linear input range of 0.8V for rail to rail output at VDD=15V. The CSA comprises of a high gain and stable dual-ended output dual-stage amplifier. The n-type load is driven by a dual-stage buffer and start-up circuit to increase the performance and ensure stability. The amplifier operates down to 6V supply voltage. It achieves 31.17dB DC-gain, 140kHz gain-bandwidth, 53o phase margin and dissipates 87μW at 15V. The footprint of the CSA is 0.3mm2 and enables 1fps readout of 1 megapixel 500dpi sensor array.
Subject
Amoled
Amplifier
Csa
Display
Dual gate
Igzo
Imager
In-panel
Metal-oxide
2015 Nano Technology
HOL - Holst
To reference this document use:
http://resolver.tudelft.nl/uuid:92ea41f3-3ddd-4844-ab09-eea2564d601c
DOI
https://doi.org/10.1109/esscirc.2018.8494260
TNO identifier
954960
Publisher
Institute of Electrical and Electronics Engineers Inc.
ISBN
9781538654
ISSN
1930-8833
Source
ESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference, 44th IEEE European Solid State Circuits Conference, ESSCIRC 2018, 3 September 2018 through 6 September 2018, 194-197
Document type
conference paper