Electrical characteristics

STLC3055N

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6.1

Test circuits

Referring to the application diagram shown in Figure 8 on page 20 and using as external

components the typical values specified in the Table 10 on page 17 and Table 11 on

page 18, find below the proper configuration for each measurement.

All measurements requiring DC current termination should be performed using "Wandel &

Goltermann DC Loop Holding Circuit GH-1" or equivalent.

Figure 10.

2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs)

Figure 11.

THL trans hybrid loss THL = 20Log|Vrx/Vtx|

Figure 12.

G24 transmit gain G24 = 20Log|2Vtx/E|

TIP

RING

RX

TX

STLC3055N

application

circuit

W&G GH1

Zref

E

Vs

1Kohm

1Kohm

100

μF

100mA

DC max

Zin = 100K

200 to 6kHz

600ohm

100

μF

TIP

RING

RX

TX

STLC3055N

application

circuit

W&G GH1

Vrx

Vtx

100

μF

100

μF

100mA

DC max

Zin = 100K

200 to 6kHz

600ohm

TIP

RING

RX

TX

STLC3055N

application

circuit

W&G GH1

E

Vtx

100

μF

100

μF

100mA

DC max

Zin = 100K

200 to 6kHz

600ohm