r
r
TSL1402R
256
×
1 LINEAR SENSOR ARRAY WITH HOLD
TAOS041F
−
APRIL 2007
V
DD
1
SI1 2
CLK 3
AO1 4
GND 5
SO2 6
NC 7
Low Image Lag . . . 0.5% Typ
Operation to 8 MHz
Single 3-V to 5-V Supply
Rail-to-Rail Output Swing (AO)
No External Load Resistor Required
Replacement for TSL1402
NC
−
No internal connection
Description
The TSL1402R linear sensor array consists of two sections of 128 photodiodes each and associated charge
amplifier circuitry, aligned to form a contiguous 256
×
1 pixel array. The device incorporates a pixel data-hold
function that provides simultaneous integration start and stop times for all pixels. The pixels measure 63.5
μm
by 55.5
μm,
with 63.5-μm center-to-center spacing and 8-μm spacing between pixels. Operation is simplified
by internal logic requiring only a serial-input pulse (SI) and a clock.
The TSL1402R is intended for use in a wide variety of applications including mark and code reading, OCR and
contact imaging, edge detection and positioning, and optical encoding.
Functional Block Diagram (each section
−
pin numbers apply to section 1)
Pixel 1
S1
1 Integrator
Reset
2
2
Pixel
2
Pixel
3
Pixel
128
1
Analog
Bus
Output
Buffer
4
AO
V
DD
_
+
1
3
S2
Sample/Hold/
Output
Switch Control Logic
Hold
Q1
Q2
Q3
Q128
CLK
SI
3
2
128-Bit Shift Register
The
LUMENOLOGY
r
Company
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road
S
Suite 300
S
Plano, TX 75074
S
(972) 673-0759
r
www.taosinc.com
1
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256
×
1 Sensor-Element Organization
400 Dots-Per-Inch (DPI) Sensor Pitch
High Linearity and Uniformity
Wide Dynamic Range . . . 4000:1 (72 dB)
Output Referenced to Ground
(TOP VIEW)
14 NC
13 SO1
12 GND
11 NC
10 SI2
9 NC
8 AO2
5
GND
Gain
Trim
13
SO
Copyright
E
2007, TAOS Inc.
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
