1 UDT Sensors Inc. Phone: 310-978-0516 Fax: 310-644-1727 http:\\www.udt.com
PHOTOPSTM
PHOTODIODE-AMPLIFIER HYBRIDS
The Photop Series, combines a photodiode with an operational amplifier in
the same package. Photops general-purpose detectors have a spectral range
from either 350 nm to 1 100 nm or 200 nm to 1100nm. They have an integrated
package ensuring low noise output under a variety of operating conditions.
These op-amps are specifically selected by UDT Sensors engineers for com-
patibility to our photodiodes.
Among many of these specific parameters are low noise, low drift and capabil-
ity of supporting a variety of gains and bandwidths determined by the external
feedback components. Operation from DC level to several MHz is possible in
• General Purpose Light Detection • Detector/Amplifier Combined
• Laser Power Monitoring • Adjustable Gain/Bandwidth
• Medical Analysis • Low Noise
• Laser Communications • W ide Bandwidth
• Bar Code Readers • DIP Package
• Industrial Control Sensors • Large Active Area
• Pollution Monitoring
• Guidance Systems
• Colorimeter
APPLICATIONS FEATURES
an either unbiased configuration for low speed, low drift applications or biased
for faster response time.
Any modification of the above devices is possible. The modifications can
be simply adding a bandpass optical filter, integration of additional chip
(hybrid) components inside the same package, utilizing a different op-
amp, photodetector replacement, modified package design and / or mount
on PCB or ceramic. For your specific requirements, contact one of our
Applications Engineers.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Responsivity (A/W)
200 300 400 500 600 700 800 900 1000 1100
Wavelength (nm)
Typical Spectral Respons
Standard
UV Enhanced
-6
-5
-4
-3
-2
-1
0
Gain (dB)
0.01 0.1 1 10
Frequency (MHz)
Typical Gain vs Frequency
455LN 455HS
455
Rf = 10 k
1
10
100
1000
10000
Responsivity (kV/W)
0.001 0.01 0.1 1 10
Frequency (MHz)
Ty p ical Re spon sivity vs Frequen c y
Rf= 10K
Rf = 100K
Rf= 1M
Rf= 10M
UDT - 455, 970 nm