List of figures

STLC3055N

4/34

List of figures

Figure 1.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2.

Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3.

DC characteristic in HI-Z mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 4.

DC characteristic in active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 5.

TIP/RING typical transition from direct to reverse polarity . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 6.

Metering pulse generation circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 7.

TIP/RING typical ringing waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 8.

Application diagram with metering pulse generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 9.

Application diagram without metering pulse generation . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 10.

2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs) . . . . . . . . . . . . . . . . 26

Figure 11.

THL trans hybrid loss THL = 20Log|Vrx/Vtx|. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 12.

G24 transmit gain G24 = 20Log|2Vtx/E| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 13.

G42 receive gain G42 = 20Log|VI/Vrx| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 14.

PSRRC power supply rejection Vpos to 2W port PSSRC = 20Log|Vn/Vl| . . . . . . . . . . . . . 27

Figure 15.

L/T longitudinal to transversal conversion L/T = 20Log|Vcm/Vl| . . . . . . . . . . . . . . . . . . . . . 27

Figure 16.

T/L transversal to longitudinal conversion T/L = 20Log|Vrx/Vcm|. . . . . . . . . . . . . . . . . . . . 28

Figure 17.

VTTX metering pulse level on line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 18.

V2Wp and W4Wp: idle channel psophometric noise at line and TX.

V2Wp = 20Log|Vl/0.774l|; V4Wp = 20Log|Vtx/0.774l| . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 19.

Simplified configuration for indoor overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 20.

Standard overvoltage protection configuration for K20 compliance . . . . . . . . . . . . . . . . . . 29

Figure 21.

State diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 22.

LQFP44 (10 x 10 x 1.4 mm) mechanical data and package dimensions . . . . . . . . . . . . . . 32