Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Açık Bilim Politikası
Açık Bilim Politikası
Frequently Asked Questions
Frequently Asked Questions
Browse
Browse
By Issue Date
By Issue Date
Authors
Authors
Titles
Titles
Subjects
Subjects
Communities & Collections
Communities & Collections
A CMOS switched-capacitor interface circuit for an integrated accelerometer
Date
2000-01-01
Author
Külah, Haluk
Yazdi, N
Najafi, K
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
0
views
0
downloads
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, resulting in a considerably increased sensor module performance by decreasing the overall system area, minimizing the interface parasitics, and simplifying the packaging. The interface electronics operates at 200kHz sampling clock and provides an adjustable sensitivity between 0.3 and 1.2V/pF with better than 100aF expected resolution resulting in a 93dB dynamic range for 1Hz bandwidth. The total chip dissipates less than 7.2mW power from a single 5V supply, and occupies an area of 3.4x3.6 mm(2) in 3 mum one-metal two-poly p-well CMOS process of University of Michigan.
Subject Keywords
Switching circuits
,
Clocks
,
Sensor systems
,
Accelerometers
,
Accelerometers
,
Feedback circuits
,
Electronics packaging
,
Sampling methods
,
Dynamic range
,
Bandwidth
,
CMOS process
URI
https://hdl.handle.net/11511/53863
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar