1
Quad Segment Photo Sensor IC
ISL58344
The ISL58344 photo sensor IC has a wide optical spectral
sensitivity from 400nm to 1000nm. It is good for multiple light
source applications, such as laser base projectors. The three sets
of gain registers can be used to adjust optical-to-electrical
conversion gain for each RED (R), GREEN (G), and BLUE (B) laser
or any wavelength in the spectral range for the application. The
ISL58344 is a single die device that has four identical photo
detectors arranged in segments that are optimized for laser
beam spot alignment. Quad segments can be used as a single
photo diode for optical power calibration and gamma correction.
The detectors can also be split into two sections with subtraction
signal output for laser beam position alignment. Beam detection
can also be used to compensate for MEMS scanning projector
geometric distortions and temperature distortions. Registers can
be updated in real time while device is in operation.
The ISL58344 can be put in sleep mode through serial interface,
where it consumes virtually no power. The ENA pin, when low, will
put the device in standby mode. Toggling the ENA pin Hi will turn
the device on quickly.
The ISL58344 operates from a single +3.3V supply. It is available
in a space-saving 9 pin glass top BGA package.
Related Literature
•See TB478 “PCB Assembly Guidelines for Shell-Op 3D Package”
Features
• Sensitive from 400nm to 1000nm with Patented Technology
for Improved Blue Photo Response
• Differential Voltage Output
• Internal Output Reference or External Output Reference
• Single +3.3V Power Supply
• Serial Interface for Gain Calibration
• Fast Settling Time <20ns
• Wide Signal Bandwidth >50MHz
• Wide Signal Gain Dynamic Range >25dB
• Sleep Mode for Conserving Power
• Quad PD Segments Provide Laser Beam Offset for Beam
Realignment Capability
• White Balance for LCoS and MEMS Systems
• Small 9-ball Optical Chip Scale Package (OCSP)
(2.2mmx2.2mm)
• Glass Top Package Compatible with Near UV and Blue LDs
• Intersil 3-wire SPI Interface
Applications
• Optical Power Monitoring
• Laser Based/LED Based Pico-Projectors
• Laser Based/LED Based projection TV
Horizontal
&
Vertical
Position
Detection
Horizontal
&
Vertical
Driver
Vertical
Horizontal
MEMS
Digital
Controller
H Pos
V Pos
MEMS H&V Driver
Power Con ve rter
Laser Diode Dri ver
CLK
Power Con ve rter
Digital Circuits
Pixel Data (RGB)
Video
Front End
&
Video
Processor
3.3V
2.5V
1.8V
1.2V
5.0V
MCU
Raster Scan Image
Optic
Feedback
OEIC
ISL58344
FIGURE 1. APPLICATION BLOCK DIAGRAM
April 6, 2012
FN7524.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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ISL58344
2
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN7524.2
April 6, 2012
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