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TSL2301
102
×
1 LINEAR OPTICAL SENSOR ARRAY
WITH ANALOG TO DIGITAL CONVERTER
TAOS007 – JULY 2000
D
D
D
D
D
D
D
102
×
1 Sensor Element Organization
300 Dots-per-Inch Pixel Pitch
On-Chip 8-Bit Analog-to-Digital Converter
Three-Zone Programmable Offset (Dark Level) and Gain
High Speed (10 MHz) Clocked Serial Interface
1-MHz Pixel Rate
Single 5-V Supply
SCLK
VDD
SDIN
SDOUT
(TOP VIEW)
1
2
3
4
8
7
6
5
NC
GND
GND
NC
NC – No internal connection
Description
The TSL2301 is a 300-dpi, 102-pixel linear optical sensor array with an integrated 8-bit analog-to-digital
converter. The pixels are on 85-µm centers and measure 85
µm
(H) by 77
µm
(W) with 8
µm
between pixels.
Associated with each pixel is a charge integrator/amplifier and sample-hold circuit. All pixels have concurrent
integration periods and sampling times. Data communication is accomplished through a three-wire serial
interface. The array is split into three 34-pixel zones, with each zone having programmable gain and offset
levels.
The TSL2301 is intended for use in high-performance, cost-critical imaging and optical sensing applications.
Functional Block Diagram
PIXEL ARRAY WITH INTEGRATORS AND S-H
PIXCLK
SI
HOLD
ZERO
LEFT EVEN
RIGHT ODD
RIGHT EVEN
IREF
8
SCLK
SDIN
SDOUT
DIGITAL I/O
AND
CONTROL
5
DB<7:0>
ADDR<4:0>
READ
WRITE
OUTPUT CHARGE-TO-
VOLTAGE CONVERTER
WITH PROGRAMMABLE
GAINS AND OFFSETS
VREF
IREF
BIAS
BLOCK
3
SECTOR
RESET/SAMPLE
START
ADCLK
DUAL 8-BIT
SA ADC
VREF
IREF
www.taosinc.com
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205
S
Plano, TX 75074
S
(972) 673-0759
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Copyright
E
2000, TAOS Inc.
1
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
