s8745-01 Hamamatsu Photonics, K.K.,, s8745-01 Datasheet - Page 2

• Manufacturer Part Number: s8745-01
• Description: Si Photodiode With Preamp
• Manufacturer: Hamamatsu Photonics, K.K.,

2
Figure 1 Spectral response
The built-in feedback resistance and capacitance of S8745-
01 and S8746-01 are 1 G
combination provides a sensitivity of about 0.1 to 0.5 V/nW in
the wavelength range of 190 to 1100 nm.
The current-to-voltage conversion gain can be varied by connecting an external feedback resistor between pins 4 and 6
for S8745-01, and between pins 9 and 12 for S8746-01 (see figure 5). Figure 2 shows the frequency response
characteristics of S8745-01 and S8746-01 with or without an externally connected feedback resistor. Because S8745-01
and S8746-01 have a built-in resistor of 1 G , for example the total feedback resistance will be converted to 100 M
externally connecting a resistor of 111 M . Choose the desired constant according to the incident light level to be
detected.
Note) If the external feedback resistor is 1 M
Figure 2 Gain-frequency characteristics
connect a matched feedback capacitor for phase compensation.
0.6
0.5
0.4
0.3
0.2
0.1
0
190
10
10
10
10
10
10
10
-1
-2
0.01
4
3
2
1
0
[Typ.Ta=25 ˚ C, Rf=1 G (built-in), Cf=5 pF (built-in)]
[Typ. Ta=25 ˚C, Vcc=±15 V, Cf=5 pF (built-in), R
400
S8745-01
S8745-01, S8746-01
WAVELENGTH (nm)
0.1
600
+1 M
(EXTERNAL
CONNECTED)
FREQUENCY (kHz)
S8745-01
+111 M
(EXTERNAL CONNECTED)
800
and 5 pF, respectively. This
1
+11 M
(EXTERNAL
CONNECTED)
1000
10
Si photodioe with preamp
1200
L
or less, gain peaking may occur in the frequency response. Therefore, be sure to
=1 M ]
KSPDB0232EA
100
KSPDB0233EA
10
10
10
10
10
10
10
-1
-2
0.01
4
3
2
1
0
[Typ. Ta=25 ˚C, Vcc=±15 V, Cf=5 pF (built-in), R
S8745-01, S8746-01
S8746-01
0.1
+1 M
(EXTERNAL
CONNECTED)
FREQUENCY (kHz)
S8746-01
+111 M
(EXTERNAL CONNECTED)
1
+11 M
(EXTERNAL
CONNECTED)
10
L
=1 M ]
100
KSPDB0234EA
by