C4890 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Pin photodiode amplifier

PHOTODIODE
PIN photodiode amplifier
C4890
Wide bandwidth amplifier (1.5 GHz, 20 dB)
C4890 wide-band amplifier, when connected to a high-speed PIN photodiode (S5791, S5972, S5973, etc.) converts optical signals at a maximum
of 1.5 GHz into voltage outputs with exceptionally low distortion and 20 dB gain.
C4890 can also be combined with other types of PIN photodiodes and APDs (avalanche photodiodes) to serve as a high-frequency amplifier for
optical measurements in a wide range of fields including industry and research applications.
Features
l Wide bandwidth, high gain, flat gain spectrum
l Flat, low group delay characteristics and low noise
l Input/output impedance: 50 Ω
l Small size, light weight, low price
l Single power supply operation (+12 V)
Applications
l High frequency amplifier for measurement
l PIN photodiode evaluation
s Absolute maximum ratings
Parameter
Supply voltage
Input voltage
Operating temperature
Storage temperature
Condition
Continuation RF input
DC
Value
+13.5
+15
+1.25
0 to +60
-10 to +70
s Electrical characteristics (Ta=25 °C, Vcc=12 V, Input/output is terminated with 50 Ω load.)
Parameter
Condition
Min.
Typ.
Max.
Cut-off frequency
(-3 dB)
High band
Low band
1.0
1.5
-
-
5
10
Gain
f=1.0 GHz
18
20
-
Gain deviation within bandwidth f=10 MHz to 1.0 GHz
-
±1.0
-
Group delay time
-
700
-
VSWR
Input
Output
f=1.0 GHz
-
1.1
-
-
1.5
-
1 dB compression point
-
7
-
Rise time
-
240
-
Noise figure
-
8
-
Current consumption
-
45
-
Unit
V
dBm
V
°C
°C
Unit
GHz
MHz
dB
dB
ps
dB
dB
dBm
ps
dB
mA