TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D – JUNE 1996 – REVISED MARCH 2003
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
D
High-Resolution, Solid-State
Frame-Transfer Image Sensor
D
11.3-mm Image Area Diagonal
D
1000 (H) x 1000 (V) Active Elements
D
Up to 30 Frames per Second
D
8-µm Square Pixels
D
Low Dark Current
D
Advanced Lateral Overflow Drain for
Antiblooming
D
Single-Pulse Image Area Clear Capability
D
Dynamic Range of More Than 60 dB
D
High Sensitivity and Quantum Efficiency
D
Nondestructive Charge Detection Through
Texas Instruments Advanced BCD Node
Technology
D
High Near-Infrared (IR) and Blue Response
D
Solid-State Reliability With No Image
Burn-In, Residual Imaging, Image
Distortion, Image Lag, or Microphonics
description
The TC281 is a frame-transfer charge-coupled-device (CCD) image sensor that provides high-resolution image
acquisition capability for image-processing applications such as robotic vision, medical X-ray analysis, and
metrology . The image-sensing area measures 8 mm horizontally and 8 mm vertically; the image-area diagonal
measures 11,3 mm and the sensor has 8-µm square pixels. The image area contains 1000 active lines with 1000
active pixels per line. The dark reference signal can be obtained from ten dark reference lines located between
the image area and the storage area, 28 dark reference pixels located at the left edge of each horizontal line,
and 8 dark reference pixels located at the right edge of each horizontal line.
The storage section of the TC281 device contains 1010 lines with 1036 pixels per line. The area is protected
from exposure to light by a metal layer. Photoelectric charge that is generated in the image area of the sensor
can be transferred into the storage section in less than 1 10 µs. After the image capture is completed (integration
time) and the image is transferred into the storage, the image readout is accomplished by transferring charge,
one line at a time, into the serial register located below the storage area. The serial register contains 1036 active
pixels and 9 dummy pixels. The maximum serial-register data rate is 40 megapixels per second. If the storage
area must be cleared of all charge, charge can be transferred quickly across the serial registers into the clearing
drain located below the register.
A high performance bulk charge detection (BCD) node converts charge from each pixel into an output voltage.
A low-noise, two-stage, source-follower amplifier further buffers the signal before it is sent to the output pin. A
readout rate of 30 frames per second is easily achievable with this device.
This MOS device contains limited built-in gate protection. During storage or handling, the device leads should be shorted together
or the device should be placed in conductive foam. In a circuit, unused inputs should always be connected to VSS. Under no
circumstances should pin voltages exceed absolute maximum ratings. Avoid shorting OUT to VSS during operation to prevent
damage to the amplifier. The device can also be damaged if the output terminals are reverse-biased and an excessive current is
allowed to flow. Specific guidelines for handling devices of this type are contained in the publication Guidelines for Handling
Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies available from Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
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SUB 1
ODB 2
IAG 3
SUB 4
SAG 5
SAG 6
SUB 7
OUT 8
ADB 9
CDB 10
VGATE 11
22 SUB
21 TDB
20 IAG
19 SUB
18 SUB
17 SUB
16 NC
15 SRG
14 TRG
13 VSOURCE
12 RST
DUAL-IN-LINE PACKAGE
(TOP VIEW)
All trademarks are the property of their respective owners.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
2POST OFFICE BOX 655303 DALLAS, TEXAS 75265
description (continued)
The blooming protection of the sensor is based on an advanced lateral overflow drain (ALOD). The antiblooming
function is activated when a suitable dc bias is applied to the overflow drain pin. With this type of blooming
protection it is also possible to clear the image area of charge completely. This is accomplished by providing
a single 10-V pulse of at least 1 µs duration to the overflow drain pin.
The TC281 image sensor uses TI-proprietary advanced virtual-phase (AVP) technology, the advanced lateral
overflow drain, and the BCD detection node. These features provide the TI image sensing devices with a high
blue response, high near-IR sensitivity, low dark current, high photoresponse uniformity, and single-phase
clocking. The TC281 is characterized for operation from -10
_
C to 45
_
C.
functional block diagram
Top Drain
Image Area
Storage Area
Serial Register
and Transfer Gate
Clearing Drain
21
20
5
15
14
TDB
10
11
12
88
9
13 Amplifier
6
3
2
ODB
IAG
SAG
VSOURCE
ADB
OUT
RST
Vgate
CDB
IAG
SAG
SRG
TRG
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
sensor topology diagram
1000 Pixels
28 Pixels 8 Pixels
1000 Lines
10 Lines
1010 Lines
1 Pixel1 Pixel
1 Dummy Pixel
10369
Dummy Pixels
Terminal Functions
TERMINAL
DESCRIPTION
NAME NO.
DESCRIPTION
ADB 9 I Supply voltage for amplifier drain bias
CDB 10 I Supply voltage for clearing drain bias
IAG 3, 20 IImage area gate
NC 16 No internal connection
ODB 2 I Supply voltage overflow drain antiblooming bias
OUT 8 O Output signal
RST 12 I Reset gate
SAG 5, 6 IStorage area gate
SRG 15 I Serial register gate
SUB 1, 4, 7, 17,
18, 19, 22 Substrate and clock return
TDB 21 NC Supply voltage for test diode
TRG 14 I T ransfer gate
VGATE 11 IBias voltage for the gate of the BCD node
VSOURCE 13 I Bias voltage for the source of the BCD node
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
4POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Integration Period Frame 2 Parallel Transfer
1010 Clocks
ODB
1046 Clocks
1010 Cycles
Readout Frame 2
Readout Frame 1
1046 Clocks
IAG
SAG
TRG
SRG
RST
Figure 1. Overview of Frame Timing with Variable Integration
Parallel Transfer 1010 Clocks
ODB
IAG
SAG
TRG
SRG
RST
Figure 2. Expanded Parallel Transfer Timing
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1010 Cycles
Transfers One Line
From SA to SR
~1µs
Clears SRG During
Partial Line Readouts
Serial Line Readout
1046 Clocks
IAG
SAG
TRG
SRG
RST
Figure 3. Expanded Storage Area-to-Serial Register Transfer and Pixel Readout Timing
ODB
Storage Area Clear
9525 Clocks
IAG
SAG
TRG
SRG
RST
Figure 4. Special Modes of Operation: Storage Area Clear
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
6POST OFFICE BOX 655303 DALLAS, TEXAS 75265
IAG
~1µs
Transfer The
First Line From
SA to AR
Transfer The
Second Line
Adding to The First
Each Additional Pulse
Bins One Additional Line
Serial Line Readout
SAG
TRG
SRG
RST
Figure 5. Special Modes of Operation: Binning
detailed description
The TC281 image sensor consists of five basic functional blocks:
D
Image-sensing area
D
ALOD
D
Storage area
D
Serial register
D
BCD node with the buffer output amplifier
image-sensing area
The image-sensing area contains 1036 x 1010 pixel elements. A metal light shield covers 28 pixels on the left
edge of the sensing area, 8 pixels on the right edge, and 10 rows at the bottom of the sensing area. The dark
pixel signal is used as a black reference during the video signal processing. The dark references accumulate
the dark current at the same rate as the active photosites, thus representing the true black level signal. As light
enters the active photosites in the image area, electron hole pairs are generated and the electrons are collected
in the potential wells of the pixels. The wells have a finite charge storage capacity determined by the pixel design.
When the generated number of electrons in the illuminated pixels exceeds this limit, the electrons can spill over
into neighboring pixels and cause blooming. To prevent this, each horizontal pair of pixels in the image sensing
area shares a lateral overflow drain structure which provides up to a 1000-to-1 protection against such
undesirable phenomena.
advanced lateral overflow drain
The advanced lateral overflow drain structure is shared by two neighboring pixels and provides several unique
features in the sensor. By varying the dc bias of the drain pin, the blooming protection level can be controlled
and traded for the well capacity.
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
advanced lateral overflow drain (continued)
Applying a 10-V pulse for a minimum duration of 1 µs above the nominal dc bias level causes the charge in the
image area to be completely cleared. This feature permits a precise control of the integration time on a
frame-by-frame basis. The single-pulse clear capability also reduces smear by eliminating accumulated charge
from the pixels before the start of the integration (single-sided smear).
Application of a negative 2-V pulse during the parallel transfer is recommended to prevent possible artifacts
resulting from slight column-to-column pixel well capacity variations.
storage area
A metal light shield covers the storage area to prevent a further integration of charge when charge is being
stored before readout. To use the sensor in a single-shot mode after being dormant for a long period of time,
you must perform multiple storage area clears to ensure the complete charge removal (see Figure 4).
serial register
The serial register shifts the data out of the sensor area at a maximum rate of 40 MHz, thus achieving a
1000 x 1000 pixel readout with the frame rate of 30 frames per second. The data is shifted to the BCD node
on the falling edge of the SRG clocking pulses.
The data can also be transferred out of the serial registers in a parallel direction to the clear drain. This allows
partial line readouts. The timing for this operating mode consists of transferring the next row from the storage
into the serial register while also clocking the TRG. Binning of multiple pixels within a column to increase the
device sensitivity can be performed by multiple line transfers into the serial register prior to the register readout.
The timing for this mode of operation is shown in Figure 5. Care must be taken not to exceed the well capacity
of the serial register by transferring too many lines into it. Horizontal binning is also possible in this sensor. It
can be accomplished in the BCD detection node by a suitable skipping of the reset pulses.
bulk charge detection node and output amplifier
The TC281 image sensor uses a patented TI charge detection device called the bulk charge detection node.
In this node, the signal electron packets are transferred under a uniquely designed p-channel MOS transistor
where they modulate the transistor threshold voltage. The threshold voltage changes are then detected; they
represent the desired output signal. After sensing is completed, charge is removed from the node by applying
a reset pulse. One of the key advantages of the BCD charge detection concept is that charge is sensed
nondestructively. The nondestructive readout does not generate reset noise, eliminating the need for the CDS
post processing. Other advantages are high speed and low noise.
Emitter-follower output buffering is recommended for the TI image sensors. TI also recommends that the
emitter-follower be ac coupled to the rest of the signal processing chain. ac coupling eliminates problems with
the sensor output dc stability and the sensor-to-sensor dc output level variations.
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
8POST OFFICE BOX 655303 DALLAS, TEXAS 75265
spurious nonuniformity specification
The spurious nonuniformity specification of the TC281 CCD grade 30 is based on several performance
characteristics:
D
Amplitude of the nonuniform line or pixel signal
D
Polarity of the nonuniform pixel signal
Black
White
D
Column signal amplitude
The CCD sensors are characterized in both an illuminated condition and a dark condition. In the dark condition,
the nonuniformity is specified in terms of absolute amplitude, as shown in Figure 6. In the illuminated condition,
the nonuniformity is specified as a percentage of the total amplitude, as shown in Figure 7.
PIXEL NONUNIFORMITY COLUMN NONUNIFORMITY
PART NUMBER DARK CONDITION ILLUMINATED CONDITION COLUMN AMPLITUDE
PIXEL AMPLITUDE, x (mV) % OF TOTAL ILLUMINATION x (mV)
TC281-30 <24 <30% <0.6 mV
mV
Amplitude
t
Illumination
% of Total
t
Figure 6. Pixel Nonuniformity, Figure 7. Pixel Nonuniformity,
Dark Condition Illuminated Condition
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
9
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, ADB, CDB, TDB, Vgate, Vsource SUB to SUB + 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage range, ODB SUB to SUB + 21 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock voltage range: IAG, SAG, SRG, TRG (see Note 1) 15 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock input voltage range: RST 0 V to +10 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA 10°C to 45°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg 30°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package temperature for ensured operation 10°C to 55°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
NOTE 1: Substrate at ground
recommended operating conditions
MIN NOM MAX UNIT
ADB, CDB 11 12 13
Supply voltage, VCC Vsource 12 V
Vgate 0
Image area clearing Vclear 15 15.5 16
Supply voltage for ODB Antiblooming control Vabc 5 5.5 6 V
Parallel transfer Vxfer 4 4.5 5
Supply current ADB 3.5 5 mA
Substrate bias voltage 0 V
Image area gate IAG
High 1.5 2 2.5
Image
area
gate
,
IAG
Low 10.5 10 9.5
Storage area gate SAG
High 1.5 2 2.5
Storage
area
gate
,
SAG
Low 10.5 10 9.5
Clock voltage
Serial register gate SRG
High 1.5 2 2.5
V
Clock
voltage
Serial
register
gate
,
SRG
Low 10.5 10 9.5
V
Transfer gate TRG
High 1.5 2 2.5
Transfer
gate
,
TRG
Low 10.5 10 9.5
Reset gate RST
High 5 5 8
Reset
gate
,
RST
Low 0 0 0.5
IAG, SAG 5 10
Clock frequency, fclock SRG RST 40 MHz
TRG 5 10
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
10 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER MIN TYP MAX UNIT
Dynamic range (see Note 2) 62 dB
Charge-conversion factor 10 µV/e
Charge-transfer efficiency (see Note 3) 0.99990 0.99995 1
Signal-response delay time, Tau (see Note 4) 7 ns
Output resistance 310 400
Noise-equivalent signal 12 25 electrons
Supply current (see Note 5) IDD 3.5 5 mA
IAG 14500
SAG 14500
Capacitance SRG 52 pF
TRG 50
RST 5.5
All typical values are used at TA = 25°C.
NOTES: 2. Dynamic range is 20 times the logarithm of the mean-noise signal divided by the saturation-output signal.
3. Charge-transfer ef ficiency is one minus the charge loss per transfer in the output register. The test is performed in the dark using
an electrical input signal.
4. Signal-response delay time is the time between the falling edge of the SRG pulse and the output-signal valid state.
5. VADC at 12 V and VSUBSTRATE at ground.
optical characteristics
PARAMETER MIN TYP MAX UNIT
Sensitivity (see Note 6)
No IR filter 240
mV/lux
Sensitivity
(see
Note
6)
With IR filter 30
mV/lux
Saturation signal, Vsat (see Note 7) Antiblooming disabled 320 mV
Maximum usable signal, VUSE Antiblooming disabled 120 mV
Blooming overload ratio (see Note 8) 300 1000
Image-area well capacity 32K electrons
Smear at 5 MHz (see Notes 9 and 10) 0.06%
Dark current TA = 21°C 0.3 nA/cm2
Electronic-shutter capability 1/1000 1/30 Saturation sec
NOTES: 6. Based on 16.67 ms integration time.
7. Saturation is the condition in which further increases in exposure do not lead to further increase in output signal.
8. Blooming-overload ratio is the ratio of blooming exposure to saturation exposure.
9. Smear is a measure of the error introduced by transferring charge through an illuminated pixel in shutterless operation. It is
equivalent to the ratio of the single-pixel transfer time to the exposure time using an illuminated section that is 1/10 of the image-area
vertical height with recommended clock frequencies.
10. The exposure time is 16.67 ms, the fast dump clocking rate during vertical timing is 10 MHz, and the illuminated section is 1/10 of
the height of the image section.
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
11
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
.15
.10
.05
0
300 500 700
Responsitivity A/W
.20
.25
Wavelength nm
RESPONSIVITY
vs
WAVELENGTH
.30
900 1100
Responsitivity
Figure 8. Typical Spectral Responsitivity
6
4
2
0
300 500 700
Sensitivity
8
10
Wavelength nm
12
900 1100
SENSITIVITY
vs
WAVELENGTH
Sensitivity
Vcm^2/µj
Figure 9. Typical Spectral Sensitivity
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
12 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
100
50
0
400 500 600 700 800 900 1000
Quantium Efficency mV
150
200
Wavelength nm
QUANTUM EFFICIENCY
vs
WAVELENGTH
250
1100
100%
80%
60%
40%
20%
Data
8.3 msec
Tint
Figure 10. Typical Spectral Quantum Efficiency
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
13
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
APPLICATION INFORMATION
NOTES: A. TI recommends designing ac-coupled systems.
B. Inputs from user-defined timer
C. Decoupling capacitors are not shown.
1
22
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
SUB
ODB
IAG
SUB
SAG
SAG
SUB
OUT
ADB
CDB
VGATE
SUB
TDB
IAG
SUB
SUB
SUB
NC
SRG
TRG
VSOURCE
RST
AB_IN
CLR_IN
IAG_IN
SAG_IN
SRG_IN
TRG_IN
ODB
U2
Discrete ODB Driver
U3
U4
U1
IAG
SAG
Discrete Driver
RST_IN
SRG
TRG
RST
VDD VDD
Discrete Serial Driver
AB
CLR
IAG
SAG
SRG
TRG
RST
ccd ANALOG OUT
(AC Coupled)
1
2
3
Q1
NPN
R2
100
R3
1 k
C1
R1
100 k
Figure 11. Typical Application Circuit
Table 1. Supply Voltages for Application Circuits
SUPPLY VOLTAGE
VDD 12 V
VCC 2 V
VAA 10 V
VRST 58 V
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
14 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
APPLICATION INFORMATION
NOTES: A. MOSFET driver with a 4-A peak current and a 2- output resistance (see Figure 14).
B. Image area clear (CLR) is active high while the parallel transfer (AB) is active low. These two pulses generate the timing for
ODB, as shown in Figure 1.
C. Decoupling capacitors are not shown.
+V
IN
U5
NC
+V
P-OUT
4-A Peak FET Driver
CLR
VV
1
2
3
4
8
7
6
5
N-OUT
R6
0
C3
0.22 µF
0.22 µF
C2
+V
IN
U6
NC
+V
P-OUT
4-A Peak FET Driver
AB
VV
1
2
3
4
8
7
6
5
N-OUT
R9
10
C5
0.22 µF
0.022 µF
C4
R7
200
K
R5
1 k
R4
3.83 k
R8
3.24 k
ODB
VDD VDD
VDD
Figure 12. Typical ODB Driver Circuit
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
15
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
APPLICATION INFORMATION
NOTE A: Decoupling capacitors are not shown.
2
3
1
Q2
PFET
R12
5.1
R14
18
R11
392
R13
2 k
D1
D2
3
1
2Q3
NFET
R10
10 k
R16
200
R15
10 k
C6
0.22 µF
C7
0.22 µF
SRG_IN
VCC
SRG
VAA
2
3
1
Q2
PFET
R12
5.1
R14
18
R11
392
R13
2 k
D1
D2
3
1
2Q3
NFET
R10
10 k
R16
200
R15
10 k
C6
0.22 µF
C7
0.22 µF
TRG_IN
VCC
TRG
VAA
Figure 13. Typical Serial/Transfer Driver Circuits
2
3
1
Q2
PFET
R12
200
R14
200
R11
392
R13
2 k
D1
D2
3
1
2Q3
NFET
R10
10 k
R16
200
R15
10 k
C6
0.22 µF
C7
0.22 µF
RST_IN
VRST
RST
NOTE A: Decoupling capacitors are not shown.
Figure 14. Typical Reset Driver Circuit
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
16 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
APPLICATION INFORMATION
NOTES: A. MOSFET driver with a 4-A peak current and a 2- output resistance (see Figure 13).
B. Decoupling capacitors are not shown.
+V
IN
U7
NC
+V
P-OUT
4-A Peak FET Driver
VV
1
2
3
4
8
7
6
5
N-OUT
VCC
R17
806
R18
1 k
3
1
2
Q4
PNP
IAG
IAG_IN
VAA
+V
IN
U8
NC
+V
P-OUT
4-A Peak FET Driver
VV
1
2
3
4
8
7
6
5
N-OUT
VCC
R19
806
R20
1 k
3
1
2
Q5
PNP
SAG
SAG_IN
VAA
Figure 15. Typical Parallel Driver Circuit
TC281
1036- × 1010-PIXEL CCD IMAGE SENSOR
SOCS058D JUNE 1996 REVISED MARCH 2003
17
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
MECHANICAL DATA
The package for the TC281 consists of a ceramic base, a glass window, and a 22-lead frame. The package leads
are configured in a dual in-line organization and fit into mounting holes with 2,54 mm (0.10 in) center-to-center
spacing. The glass window is sealed to the package by an epoxy adhesive. It can be cleaned by any standard
procedure for cleaning optical assemblies or by wiping the surface with a cotton swab moistened with alcohol.
Optical Center
Index Dot
Pin 1
Package
Center
11/00
Ô
Ô
Ó
Ó
Ó
Ó
ÔÔ
ÔÔ
ÔÔ
ÔÔ
Ó
Ó
Ó
17.90
17.40
9.51
9.21
28.22
27.66
25.13
24.87
16.60
16.40
1.00
0.90
0.508
2.10
1.70
1.12
0.92
3.22
2.62
18.03
17.53
0.30
0.20
0.76
0.16
5.10
3.50 0.56
0.46 2.67
2.41
Package
Center
0.08 ±0.08
TC281 (22 pin)
0.67
NOTES: A. All linear dimensions are in millimeters.
B. Single dimensions are nominal.
C. The center of the package and the center of the image area are not coincident.
D. Each pin centerline is located within 0,25 mm (0.010 in) of its true longitudinal position.
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty . Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
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