STLC3055N STMicroelectronics, STLC3055N Datasheet - Page 4

• Manufacturer Part Number: STLC3055N
• Manufacturer: STMicroelectronics

Specifications of STLC3055N

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: No
• Longitudinal Balanced: 58
• Operating Supply Voltage (typ): 9V
• Operating Temp Range: -40C to 85C
• Package Type: TQFP
• Loop Current Limit: 40mA
• Operating Temperature Classification: Industrial
• Pin Count: 44
• Mounting: Surface Mount
• Operating Current: 55mA
• Operating Supply Voltage (max): 12V
• Operating Supply Voltage (min): 5.5V
• Lead Free Status / RoHS Status: Not Compliant

List of figures
List of figures
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Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DC characteristic in HI-Z mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DC characteristic in active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TIP/RING typical transition from direct to reverse polarity . . . . . . . . . . . . . . . . . . . . . . . . . 12
Metering pulse generation circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TIP/RING typical ringing waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Application diagram with metering pulse generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Application diagram without metering pulse generation . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs) . . . . . . . . . . . . . . . . 26
THL trans hybrid loss THL = 20Log|Vrx/Vtx|. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
G24 transmit gain G24 = 20Log|2Vtx/E| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
G42 receive gain G42 = 20Log|VI/Vrx| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PSRRC power supply rejection Vpos to 2W port PSSRC = 20Log|Vn/Vl| . . . . . . . . . . . . . 27
L/T longitudinal to transversal conversion L/T = 20Log|Vcm/Vl| . . . . . . . . . . . . . . . . . . . . . 27
T/L transversal to longitudinal conversion T/L = 20Log|Vrx/Vcm|. . . . . . . . . . . . . . . . . . . . 28
VTTX metering pulse level on line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
V2Wp and W4Wp: idle channel psophometric noise at line and TX.
V2Wp = 20Log|Vl/0.774l|; V4Wp = 20Log|Vtx/0.774l| . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Simplified configuration for indoor overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . 29
Standard overvoltage protection configuration for K20 compliance . . . . . . . . . . . . . . . . . . 29
State diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
LQFP44 (10 x 10 x 1.4 mm) mechanical data and package dimensions . . . . . . . . . . . . . . 32
STLC3055N