SMPX500 Series of Hybrid Detectors
The SMPX500 series is a range of integrated photodiode amplifiers incorporating a 1.75mm² silicon
PIN photodiode, operational amplifier and transimpedance circuitry. The devices provide a voltage
output proportional to incident light.
Features
Incorporation of the photodiode and amplifier into a welded metal can minimises noise pickup,
leakage current errors and stray capacitance normally associated with discrete designs. Gain and
bandwidth options are available to suit a wide range of applications and the devices can be operated
from single or dual rail supplies. Lens or Flat window can versions are available to suit the
application, as well as optical filters to minimise unwanted signals.
Applications
These devices are especially suited to low-light level
or applications where high sensitivity is required:
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Medical instruments
Document verification
Laboratory instrumentation
Position and proximity detectors
Pollution/environmental monitoring
Smoke/Gas detectors
Complements SMPX600 range of Self-Monitoring Emitters
Spectral Response
Custom filters available on request
1
0.8
Unfiltered
0.6
Relative
0.4
Output
BG18
0.2
RG850
U340
0
200
400
600
800
1000
1200
Wavelength (nm)
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is
believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions
discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders
Document No: 7303
Issue: 5
SMPX500 Series of Hybrid Detectors
Typical Characteristics @22ºC
Detectors/Application
Parameter
DC Supply Voltage (Dual
Rail)
DC Supply Voltage (Single Rail)
Quiescent Current
Dark Level Noise
Amplifier Output Offset
Frequency Response (-3dB)
Transimpedance Gain
Optical Gain (approx.)
Detector Output Current
Temperature Limits
Photodiode Active Area
Window / Lens
Sink
Source
Operating
Storage
Typical
Typical
Maximium
Units
V
V
mA
mV
mV
mV
KHz
M
n/a
mA
mA
°
C
°
C
mm²
n/a
±2
to ±18
+4 to +36
4
2.5
<5
10
10
10
1
10
1
-20 to +80
-30 to +100
1.75
Window
±2
to ±18
+4 to +36
4
2.5
<5
10
10
10
10
10
1
-20 to +80
-30 to +100
1.75
Lens
±2
to ±18
+4 to +36
4
2.5
<5
10
35
20
1
10
1
-20 to +80
-30 to +100
1.75
Window
±2
to ±18
+4 to +36
4
2.5
<5
10
35
20
10
10
1
-20 to +80
-30 to +100
1.75
Lens
±2
to ±18
+4 to +36
4
2.5
<5
10
65
8.2
1
10
1
-20 to +80
-30 to +100
1.75
Window
±2
to ±18
+4 to +36
4
2.5
<5
10
65
8.2
10
10
1
-20 to +80
-30 to +100
1.75
Lens
±2
to ±18
+4 to +36
4
2.5
<5
10
90
1
10
10
1
-20 to +80
-30 to +100
1.75
Lens
General Purpose
SMPX511-WN
SMPX511-LN
High Gain
SMPX522-WN
SMPX522-LN
Pulse
SMPX512-WN
SMPX512-LN
High Speed
SMPX503-LN
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press.
However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders
Document No: 7303
Issue: 5
SMPX500 Series of Hybrid Detectors
Circuit Diagram
All part numbers
except
SMPX503-LN:
SMPX503-LN:
Mechanical
All dimensions in mm.
Window
Lens
Bottom View
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is
believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions
discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders
Document No: 7303
Issue: 5
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