Si photodioe with preamp

S8745-01, S8746-01

-

+

TO-8

PACKAGE

Rf

(EXTERNAL CONNECTED)

the next-stage circuit when

viewed from the OUT terminal.

Rf=1 G

Ω (BUILT-IN)

Cf=5 pF (BUILT-IN)

WINDOW

(QUARTZ)

0.1 µF

0.1 µF

Vcc+

Vcc-

NC

PHOTODIODE

-

+

TO-5

PACKAGE

Rf

(EXTERNAL CONNECTED)

the next-stage circuit when

viewed from the OUT terminal.

Rf=1 G

Ω (BUILT-IN)

Cf=5 pF (BUILT-IN)

WINDOW

(QUARTZ)

0.1 µF

0.1 µF

Vcc+

Vcc-

NC

PHOTODIODE

Figure 5 Application circuit example

S8745-01 and S8746-01 use a package with the guard ring effect provided. To make it effective during measurement, the

package leads (pin 5 for S8745-01; pins 5 and 11 for S8746-01) should be connected to the ground line.

When a feedback resistor is externally connected, it is necessary to provide a guard ring on the circuit board or to provide a teflon

standoff for the leads.

Note) A tantalum or ceramic capacitor of 0.1 to 10 µF must be connected to the supply voltage leads (pins 3 and 9 for S8745-01;

pins 1 and 4 for S8746-01) as a bypass capacitor used to prevent the device from oscillation.

KSPDC0048EA

KSPDC0049EA

S8745-01

S8746-01

4