STLC3055N_09 STMICROELECTRONICS [STMicroelectronics], STLC3055N_09 Datasheet - Page 26

• Manufacturer Part Number: STLC3055N_09
• Description: WLL and ISDN-TA subscriber line interface circuit
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
6.1
26/34
Test circuits
Referring to the application diagram shown in
components the typical values specified in the
page
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|
18, find below the proper configuration for each measurement.
E
600ohm
600ohm
E
1Kohm
1Kohm
600ohm
Zref
Zin = 100K
200 to 6kHz
100mA
DC max
Zin = 100K
200 to 6kHz
100μF
100μF
100mA
DC max
100μF
W&G GH1
W&G GH1
100μF
Vs
Zin = 100K
200 to 6kHz
100mA
DC max
W&G GH1
100μF
100μF
Figure 8 on page 20
Table 10 on page 17
TIP
RING
TIP
RING
STLC3055N
STLC3055N
application
application
circuit
circuit
TIP
RING
STLC3055N
application
TX
RX
RX
TX
and using as external
circuit
and
Table 11 on
Vtx
Vrx
Vtx
RX
TX
STLC3055N