FFD-200 Perkin Elmer Optoelectronics, FFD-200 Datasheet - Page 34

• Manufacturer Part Number: FFD-200
• Description: si Pins Large Area
• Manufacturer: Perkin Elmer Optoelectronics

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32
buffered multiplexers
www.optoelectronics.perkinelmer.com
XL-1 Variable-Gain Multiplexers
Description
PerkinElmer Optoelectronics’ CMOS buffered multiplexers offer
the ideal solution to the increasing demand for low noise
amplification and multiplexing applications. They are designed
to interface with a variety of photosensitive arrays constructed
from materials such as amorphous silicon, gallium arsenide,
germanium or mercury cadmium telluride. These devices,
available in 64, 128 and 256 channel models, are widely used in
medical, scientific, and industrial applications to read electrical
signals generated by x-ray, infrared, and other radiation beyond
the direct detection range of silicon.
XL-1 Variable-Gain Multiplexers
These advanced devices offer a versatile solution to the increasing
demand for low noise amplification and multiplexing. They
are designed to interface with linear photosensitive arrays, such
as those made of gallium arsenide, germanium or amorphous
silicon, or any of several special purpose infrared-sensitive
materials. Each channel of the multiplexer consists of a charge
amplifier in series with two separate buffered sample-and-hold
paths for correlated double sampling (CDS). A broad range
of electrically selectable integrating capacitors provide
accommodation for charge packets from a wide range of sensor
materials, pixel sizes and exposure levels.
XL-1 multiplexers are available in 64, 128 or 256 active
channels, all with 100µm channel-to-channel spacing. They
offer a dynamic range in excess of 90 db, low offset voltage,
bidirectional readout, and integrated calibration facilities.
Multiplexer Individual Channel Schematic
Input
Pad
Charge
Test
V
dd
Integrator
V
ref
Reset
+
-
Sample
Reset
Clock
Clock
1, 2, 4 or 16 pF
+
+
-
-
Table of Contents
Buffer
Buffer
Video
Video
+
+
-
-
V
V
Pad
Pad
out
out
R
S