TSL1402R
256 ?1 LINEAR SENSOR ARRAY WITH HOLD
TAOS041G NOVEMBER 2011
1
The LUMENOLOGY r Company
r
r
Copyright E 2011, TAOS Inc.
www.taosinc.com
D 256 ?/SPAN> 1 Sensor-Element Organization
D 400 Dots-Per-Inch (DPI) Sensor Pitch
D High Linearity and Uniformity
D Wide Dynamic Range . . . 4000:1 (72 dB)
D Output Referenced to Ground
D Low Image Lag . . . 0.5% Typ
D Operation to 8 MHz
D Single 3-V to 5-V Supply
D Rail-to-Rail Output Swing (AO)
D No External Load Resistor Required
D Replacement for TSL1402
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 糾
by 55.5 糾, with 63.5-糾 center-to-center spacing and 8-糾 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)
2
3
SI
CLK
128-Bit Shift Register
Q128
Switch Control Logic
Integrator
Reset
_
+
Pixel 1
Pixel
2
Pixel
128
Pixel
3
Sample/Hold/
Output
Analog
Bus
Q3
Q2
Q1
Hold
SO
13
Output
Buffer
Gain
Trim
V
DD
AO
GND
5
4
1
S1
S2
2
1
3
1
2
r
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
(TOP VIEW)
NC No internal connection
V
DD
1
SI1 2
CLK 3
AO1 4
GND 5
SO2 6
NC 7
14 NC
13 SO1
12 GND
11 NC
10 SI2
9 NC
8 AO2
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