A hybrid silicon-on-glass (SOG) lateral micro-accelerometer with CMOS readout circuitry

2002-01-01
Chae, Junseok
Külah, Haluk
Najafi, Khalil
A hybrid micro-accelerometer system consisting of a new bulk Silicon-On-Glass (SOG) lateral capacitive microaccelerometer and a CMOS interface circuit is presented. The accelerometer has a 120mum-thick proof mass, 2.2mm x 3.0mm in size with 3.2mum sensing gap defined by DRIE. The circuit has a 95dB dynamic range, a low offset of 370muV and can resolve better than 75aF. The hybrid system has a measured sensitivity of 40mV/g and resolution of 100mug/rootHz.
IEEE International Conference on Micro Electro Mechanical Systems MEMS 2002, (20 - 24 Ocak 2002)

Suggestions

A CMOS visible image sensor array using current mirroring integration readout circuitry
Akbay, Selim Sermet; Bircan, A.; Akın, Tayfun (null; 2000-08-30)
This paper reports the development of a CMOS visible sensor array using a high performance readout circuit called Current Mirroring Integration (CMI). The sensor element is a photodiode implemented using n-well and p+ -active layers available in any CMOS process. The current generated by optical excitation is mirrored and integrated in an off-pixel capacitor using the CMI readout circuit, which provides high injection efficiency, low input impedance, almost-zero and stable detector bias, and a high dynamic ...
A low-power robust humidity sensor in a standard CMOS process
Okcan, Burak; Akın, Tayfun (2007-11-01)
This paper presents a low-cost thermal-conductivity-based humidity sensor implemented using a 0.6-mu m CMOS process, where suspended p-n junction diodes are used as the humidity-sensitive elements. The measurement method uses the difference between the thermal conductivities of air and water vapor at high temperatures by comparing the output voltages of two hea ted and thermally isolated diodes; one of which is exposed to the environment and has a humidity-dependent thermal conductance, while the other is s...
A CMOS switched-capacitor interface circuit for an integrated accelerometer
Külah, Haluk; Najafi, K (2000-01-01)
This paper presents a CMOS interface electronics for monolithic micromachined capacitive accelerometer systems. The interface electronics is a fully differential switched-capacitor charge integrator with its internal clock generator and sensor feedback circuit for closed-loop operation. The circuit is designed for open-loop and closed-loop operations, and provides both digital and differential analog outputs. One of the main advantages of this chip is that it can be monolithically integrated with the sensor...
A CMOS High Frequency Pulse Width Modulation Integrated Circuit
Sahin, Osman Ulas; Kocer, Fatih (2016-08-05)
In this work, a high frequency pulse width modulation (PWM) integrated circuit (IC) designed and implemented in a commercial 0.35 mu m CMOS process is presented. Based on natural sampling method, the proposed PWM IC can generate both a PWM signal and its inverse for arbitrary frequencies up to 5 MHz. The PWM frequency can he adjusted via an external clock and an off-chip capacitor. The duty cycle of the PWM signal can be linearly varied from 5% to 95% by changing the input signal. Thanks to its analog trian...
A Sigma Delta micro accelerometer with 6 mu g/root Hz resolution and 130 dB dynamic range
Sonmez, Ugur; Külah, Haluk; Akın, Tayfun (2014-11-01)
This paper reports the implementation of a low noise, high dynamic-range I I" pound readout for low cost capacitive Micro-Electro-Mechanical Systems (MEMS) accelerometers. The readout circuit sets the bandwidth of the I I" pound loop through an extra feedback path, and hence allows the closed loop system to operate with the low noise characteristics similar to a second-order I I" pound analog-to-digital converter. A thorough noise analysis of the proposed accelerometer shows that the mechanical noise is the...
Citation Formats
J. Chae, H. Külah, and K. Najafi, “A hybrid silicon-on-glass (SOG) lateral micro-accelerometer with CMOS readout circuitry,” Las Vegas, NV, Amerika Birleşik Devletleri, 2002, p. 623, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036124337&origin=inward.