MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 8

• Manufacturer Part Number: MCM20027IBMN
• Manufacturer: Freescale
• Type: CMOSr

Specifications of MCM20027IBMN

• Sensor Image Color Type: Monochrome
• Sensor Image Size Range: >= 480,000Pixels
• Sensor Image Size: 1280x1024Pixels
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 40C
• Package Type: CLCC
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Supplier Unconfirmed

MOTOROLA
and wavelength of the incident illumination. The appli-
cation of an appropriate bias allows the user to collect
the electrons and meter the charge in the form of a use-
ful parameter such as voltage.
The pixel architecture also requires all pixels in a row to
have common Reset , Transfer 1 and 2, Floating diffu-
sion and Row Select gate controls. In addition all pixels
have common supply (V
How it works?
In brief, initially during Integration @T=0, both Transfer
Gates 1 and 2 and the Reset Gate is Open (On-Active
High). Transfer Gate 1 then Closes (Off) @ T=1, there-
by allowing Photodiode 1 to charge its well capacitance.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
TRANSFER GATE 1
TRANSFER
ROW SELECT GATE
TRANSFER GATE 2
SHARED FLOATING
GATE 1
RESET
GATE
DIFFUSION GATE
RESET GATE
PHOTODIODE
ROW 1
T=0
DD
) and ground (V
Figure 2. Shared Floating Diffusion Pixel Architecture
T=1
Freescale Semiconductor, Inc.
T
row
For More Information On This Product,
T=2
TRANSFER
GATE 2
SS
Go to: www.freescale.com
PHOTODIODE
) connec-
ROW2
T
int
T
int
tions. An optimized cell architecture provides enhance-
ments such as noise reduction, fill factor maximizations,
and antiblooming. The use of pinned photodiodes (2)
and proprietary transfer gate devices in the photoele-
ments enables enhanced sensitivity in the entire visual
spectral range and a lag free operation.
At this time Photodiode 2 is held at Reset level by hav-
ing Transfer Gate 2 and the Reset Gate open (On). Af-
ter 1 Row Period [T
(Off). This action causes Photodiode 2 to start charging.
When the integration (charging) of Photdiode 1 has
neared completion, @ T=3, the Reset Gate closes (Off).
DIFFUSION
FLOATING
SHARED
GATE
T=3
T=4 T=5
T
row
row
], @T=2 ,Transfer Gate 2 closes
Revision 8.4 - 24 Oct 2002 :
T=6
ROW SELECT
ImageMOS
ImageMOS
GATE
MCM20027
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