Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

TC245 Datenblatt(PDF) 4 Page - Texas Instruments

Teilenummer TC245
Bauteilbeschribung  786-488-pixel ccd image sensor
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TC245 Datenblatt(HTML) 4 Page - Texas Instruments

  TC245 Datasheet HTML 1Page - Texas Instruments TC245 Datasheet HTML 2Page - Texas Instruments TC245 Datasheet HTML 3Page - Texas Instruments TC245 Datasheet HTML 4Page - Texas Instruments TC245 Datasheet HTML 5Page - Texas Instruments TC245 Datasheet HTML 6Page - Texas Instruments TC245 Datasheet HTML 7Page - Texas Instruments TC245 Datasheet HTML 8Page - Texas Instruments TC245 Datasheet HTML 9Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 19 page
background image
TC245
786-
× 488-PIXEL CCD IMAGE SENSOR
SOCS019A – DECEMBER 1991
2-4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
image-sensing and storage areas
Figure 1 and Figure 2 show cross sections with potential well diagrams and top views of image-sensing and
storage-area elements. As light enters the silicon in the image-sensing area, free electrons are generated and
collected in the potential wells of the sensing elements. During this time, blooming protection is activated by
applying a burst of pulses to the antiblooming gate inputs every horizontal blanking interval. This prevents
blooming caused by the spilling of charge from overexposed elements into neighboring elements. After
integration is complete, the signal charge is transferred into the storage area.
There are 29 full columns and one half-column of elements at the right edge of the image-sensing area that are
shielded from incident light; these elements provide the dark reference used in subsequent video processing
circuits to restore the video black level. There are also one full column and one half-column of light-shielded
elements at the left edge of the image-sensing area and two lines of light-shielded elements between the
image-sensing and image-storage areas (the latter prevent charge leakage from the image-sensing area into
the image-storage area).
multiplexer with transfer gates and serial registers
The multiplexer and transfer gates transfer charge line by line from the storage-area columns into the
corresponding serial registers and prepare it for readout. Figure 3 illustrates the layout of the multiplexing gate
that vertically separates the pixels for input into the serial registers. Figure 4 shows the layout of the interface
region between the serial-register gates and the transfer gates. Multiplexing is activated during the horizontal
blanking interval by applying appropriate pulses to the transfer gates and serial registers; the required pulse
timing is shown in Figure 5. A drain is also included to provide the capability to clear the image-sensing and
storage areas of unwanted charge. Such charge can accumulate in the imager during the start-up of operation
or under special circumstances when nonstandard TV operation is desired.
correlated clamp-sample-and-hold amplifier with charge-detection nodes
Figure 6 illustrates the correlated clamp-sample-and-hold amplifier circuit. Charge is converted into a video
signal by transferring the charge onto a floating diffusion structure in detection node1 that is connected to the
gate of MOS transistor Q1. The proportional charge-induced signal is then processed by the circuit shown in
Figure 6. This circuit consists of a low-pass filter formed by Q1 and C2, coupling capacitor C1, dummy detection
node 2, which restores the dc bias on the gate of Q3, sampling transistor Q5, holding capacitor C3, and output
buffer Q6. Transistors Q2, Q4, and Q7 are current sources for each corresponding stage of the amplifier. The
parameters of this high-performance signal-processing amplifier have been optimized to minimize noise and
maximize the video signal.
The signal processing begins with a reset of detection node 1 and restoration of the dc bias on the gate of Q3
through the clamping function of dummy detection node 2. After the clamping is completed, the new charge
packet is transferred onto detection node 1. The resulting signal is sampled by the sampling transistor Q5 and
is stored on the holding capacitor C3. This process is repeated periodically and is correlated to the charge
transfer in the registers. The correlation is achieved automatically since the same clock lines used in registers
φ-S2 and φ-S3 for charge transport serve for reset and sample. The multiple use of the clock lines significantly
reduces the number of signals required to operate the sensor. The amplifier also contains an internal voltage
reference generator that provides the reference bias for the reset and clamp transistors. The detection nodes
and the corresponding amplifiers are located some distance away from the edge of the storage area. Therefore,
eleven dummy elements are incorporated at the end of each serial register to span the distance. The location
of the dummy elements, which are considered to be part of the amplifiers, is shown in the functional block
diagram.


Ähnliche Teilenummer - TC245

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Texas Instruments
TC245 TI1-TC245 Datasheet
309Kb / 19P
[Old version datasheet]   pixel ccd image sensor
TC245-40 TI1-TC245-40 Datasheet
309Kb / 19P
[Old version datasheet]   pixel ccd image sensor
TC245_1998 TI1-TC245_1998 Datasheet
309Kb / 19P
[Old version datasheet]   pixel ccd image sensor
More results

Ähnliche Beschreibung - TC245

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Texas Instruments
TC244 TI1-TC244 Datasheet
312Kb / 19P
[Old version datasheet]   786- 횞 488-PIXEL CCD IMAGE SENSOR
TC244A TI-TC244A Datasheet
311Kb / 19P
[Old version datasheet]   786- 횞 488-PIXEL CCD IMAGE SENSOR
TC240 TI1-TC240 Datasheet
302Kb / 19P
[Old version datasheet]   780- 횞 488-PIXEL CCD IMAGE SENSOR
TC217 TI-TC217 Datasheet
384Kb / 21P
[Old version datasheet]   1158- 횞 488-pixel ccd image sensor
TC241 TI-TC241 Datasheet
282Kb / 18P
[Old version datasheet]   780- 횞 488-pixel ccd image sensor
TC237 TI-TC237 Datasheet
191Kb / 15P
[Old version datasheet]   680- 횞 500-pixel ccd image sensor
TC271 TI1-TC271 Datasheet
373Kb / 22P
[Old version datasheet]   1080 횞 580-PIXEL CCD IMAGE SENSOR
TC277 TI-TC277 Datasheet
297Kb / 19P
[Old version datasheet]   735- 횞 580-PIXEL CCD IMAGE SENSOR
TC211 TI-TC211 Datasheet
173Kb / 13P
[Old version datasheet]   192- 횞 165-pixel ccd image sensor
TC213 TI-TC213 Datasheet
325Kb / 21P
[Old version datasheet]   1024- 횞 512-pixel ccd image sensor
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19


Datenblatt Download

Go To PDF Page


Link URL




Privatsphäre und Datenschutz
ALLDATASHEETDE.COM
War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Linktausch   |   Hersteller
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com