E-STLC3085 Просмотр технического описания (PDF) - STMicroelectronics

Номер в каталоге

Компоненты Описание

производитель

E-STLC3085

Integrated Pots Interface for Home Access Gateway and WLL

STMicroelectronics 

STLC3085

Appendix A STLC3085 test circuits

STLC3085 test circuits

Referring to the application diagram shown in Figure 11 and using as external components the

Typ. Values specified in the "External Components" Table 10 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 9. 2W Return Loss

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

W&G GH1

Zref

600ohm

100 F

Vs

1Kohm

100mA

DC max

E

Zin = 100K

200 to 6kHz

1Kohm

100 F

TIP

TX

STLC3085

application

circuit

RING

RX

Figure 10. THL Trans Hybrid Loss

THL = 20Log|Vrx/Vtx|

W&G GH1

600ohm

100 F

100mA

DC max

Zin = 100K

200 to 6kHz

100 F

TIP

TX

Vtx

STLC3085

application

circuit

RING

RX

Vrx

21/28

Share Link: