See other catalogues for
Fujitsu
You may also be interested in
Text version of the page
FINGERPRINT SENSOR FACT SHEET
MBF200 Solid State Fingerprint Sensor fact sheet - 34295 MBF200 SOLID-STATEFINGERPRINT SENSOR
Description The Fujitsu MBF200 solid-state
Fingerprint Sensor (see diagram on
following page) is a rugged, super
thin, silicon-based, direct contact,
fingerprint acquisition device. Fingerprint authentication providesa reliable, quick, and user-friendly
alternative to password inefficiency
which requires the user to recall and
enter cumbersome and often
numerous code combinations. One
advantage of the MBF200 fingerprint
sensor is its ease of integration into
portable electronic systems such as
laptops, personal digital assistants
(PDAs), and cellular phones. Other
advantages include: durable
construction, high performance,
exceptional image clarity, small size,
low power consumption, and lowerunit cost than optical scanners.The MBF200 sensor consists of a256 x 300 column and row
configuration of tiny metal electrodes.
Every column is linked to a pair of
sample-and-hold circuits. The
fingerprint image is recorded in
sequence row by row. Each metal
electrode acts as one capacitor plate
and the contacting finger acts as the
second plate. A passivation layer on
the surface of the device forms the
dielectric between these two plates.
A finger-press on the sensor creates
varying capacitor values across the
array which are then converted into an image of the fingerprint. The values of
the array are determined by the
contour (ridges and valleys) of the
fingerprint. In under one second, thesensor quickly captures several
images of the fingerprint and selects
the highest quality image. Skin
moisture (damp or dry) is accounted
for, thus making the sensor ideal in a
wide range of climates. Once the
fingerprint has been scanned, it is
verified against the stored template of
the individual’s fingerprint.The MBF200 is manufactured instandard CMOS technology. The
256 x 300 sensor array yields a clear,
high quality 500dpi image. An
integrated 8 bit analogue-to-digital
converter is used to digitise the
output of the sensor array.Each MBF200 chip supports threedifferent industry-standard bus
