ElFys SM322
Photodetector Datasheet
Product
Description and Key Features
ElFys SM series photodiode products
consist of ElFys patented Black Silicon Induced Junction Technol- ogy. Product
patent information can be found at ElFys SM series photodiode products provide
superior performance of photosensitivity in visible and near infrared spectrum.
The product is especially suitable for health monitoring applications in weara-
ble devices. The high sensitivity of the product offers more output
photocurrent and improves the en- ergy efficiency of PPG (photoplethysmography)
module. Together with its compact packaging and high fill factor of
photosensitive area, it facilitates innovative wearable products design.
Key feature: Enhanced
photosensitivity to Green, Red and NIR wavelength
Key applications: HRM,
SpO2 for wearables
Part number
|
Photosensitive area (mm2)
|
Packaging
|
Outline
dimensions (mm)
|
Reverse
Voltage (V) Max.
|
Operation
tem- perature oC
|
SM322
|
3.22
|
PCB, moulded
optical epoxy
|
3.2 x 2.0 x 0.6
|
6
|
-40…+85
|
Values
of Electrical and Optical Performance
Part number
|
Spectral response range
|
Peak response wave- length, λp
|
Photosensitivity
|
Dark current @ VR=10mV,
Mx.
|
Capacitance
@
VR=0V,
f=100kHz, Typ.
|
Noise
equivalent power
NEP @ λp Typ.
|
λp
Typ.
|
540n
m Typ.
|
630
nm Typ.
|
940
nm Typ.
|
nm
|
nm
|
A/W
|
A/W
|
A/W
|
A/W
|
pA
|
pF
|
W/√Hz
|
SM322
|
400-1100
|
970
|
0.71
|
0.40
|
0.47
|
0.70
|
40
|
60
|
9x10-15
|
Note: All data are specified at typical
ambient temperature (25°C) and under normal working condi- tions.
Spectral
Response (Typical)


Dark current and capacitance vs Reverse bias (Typical)
