Technical Specifications
MD 1900 Series
3/4” DC Photosensor Module
*) Additional models on request
Operating Conditions
Supply voltage
Supply current
5 V dc
< 280 mA
Settling time
< 1s (time to stabilize HV after supply voltage applied)
active quenching control (internal)
1 V/ 20nA (other values on request)
0 ... 10 V dc **)
Over-illumination protection:
Current to voltage conversion factor
Output signal
Output offset
Gain
± 3mV
up to 1 x 108, via internal potentiometer (or by external control voltage 0...3 V
via ext. OpAmp circuit)
Active Quenching Control
TTL-Pulse, active high, RESET: internal via timer, typ.1s, external via
5 V-pulse
Frequency bandwidth
GATE voltage Vgate
DC to 1 kHz (other values on request, max. 20 kHz)
5 V: h to l set time Vca to Vch-ent +100 V : ~ 150 µs
5 V: l to h set time Vca to Vch-ent - 100 V : ~ 150 µs
1500 volts
High voltage pre-adjusted
Maximum ratings
Input voltage
+5.5 V
Operating temperature
Storage temperature
Weight
5 to 40 °C
**) for long term operation: max. average output voltage of <
-20 to 50 °C
5 V (anode current of <100 nA) is recommended
~ 450 g
Performance Characteristics
Spectral response
Current Amplification vs Control Voltage
1,E+09
100
10
1,E+08
1,E+07
1,E+06
1,E+05
C
1943 C 1944
C
1983
C
1973
C
1972
1
1,E+04
1,E+03
1,E+02
C
1962
C
1322
1921
C
C
1952
800
C
1982
C
1911
C
1942
600
0.1
100
0,9
1,4
1,9
2,4
2,9
200
300
400
500
700
900
Control Voltage / V
W avelength (nm )