SM3322ARA Datasheet, PDF (1/14 Pages) Nippon Precision Circuits Inc – Dark current compensation circuit built-in for stable signal output

SM3322ARA
Optical Sensor IC
OVERVIEW
The SM3322ARA is a fluorescence detector IC with a built-in single picture element (pixel) photodiode of 1mm² and programmable
signal conditioning circuit. The IC has an optical filter on chip with target condition 640nm ± 60nm, and it integrates all the elements
required for optical sensor into an ultra-miniature package. The signal condition circuit has a programmable gain amplifier with dark
current compensation circuit, so that it can operate in wider temperature range. With 3 addressing bits, up to 8 SM3322ARA can be
paralleled.
FEATURES
▪ Optical filter on chip with target condition: 640nm ± 60nm
▪ Dark current compensation circuit built-in for stable signal output
▪ Gain setting and output control function using serial interface
(DATA, SE, CLK, OE)
▪ Connection up to 8 devices in parallel according to 3-bit address setting
▪ Transimpedance range: 500kΩ to 240MΩ
▪ Photodiode detector size: 2.3mm×0.6mm
(1.0mm² photodetector surface area)
▪Anti-reflection film coating reduces responsivity fluctuations
due to wavelength
▪ Supply voltage range: 2.7 to 5.5V (single supply)
▪ Current consumption: 1.5mA (typ)@V_DD=5V, no load
▪ Operating temperature range: -40 to +85°C
▪ Package: 12 pin HCOB
ORDERING INFORMATION
Device
Package
SM3322ARA
12 pin HCOB
PACKAGE DIMENSIONS
(Unit: mm)
Y
B
X
Photodiode detector
A
3.2 ^±0.1
1.15 ±0.2
Photodiode detector dimensions(Origin:Package center)
X
Y
A
-1.15
-0.7
B
1.15
-0.1
0.35 ^0.5
0.25±0.05
Package type : 12pin HCOB
Package size : 3.2mm×5.5mm
Photodiode detector size : 2.3mm×0.6mm
(1.0mm² photo detector surface area)
TYPICAL APPLICATION CIRCUIT
SM3322ARA
IC1
SM3322ARA
IC2
SM3322ARA
IC3
ADC
ADC
CPU
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