PBL3766 Ericsson Microelectronics, PBL3766 Datasheet
PBL3766
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PBL3766 Summary of contents
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Description The PBL 3766 Subscriber Line Interface Circuit (SLIC monolithic integrated circuit, manufactured bipolar technology. The PBL 3766 SLIC facilitates the design of cost effective, high performance on-premises (ONS) analog line interface cards for PABX ...
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PBL 3766 Absolute Maximum Ratings Parameter Temperature and humidity Storage temperature range Operating temperature range Operating junction temperature Storage humidity Power supply, -10 C < T < Amb V with respect to GND CC V with respect to ...
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Electrical Characteristics 0 C < T < Amb nF 1.5 F unless otherwise specified Parameter Two-wire port Overload level, V TRO Input impedance, ...
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PBL 3766 Parameter Two-wire return loss, r TIPX idle voltage RINGX idle voltage Four-wire transmit port (VTX) Overload level, V TXO Output offset voltage PBL 3766 PBL 3766/6 Output impedance Four-wire receive ...
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Parameter Gain tracking Two-wire to four-wire Four-wire to two-wire Noise Idle channel noise at two-wire (TIPX-RINGX) or four-wire (VTX) port Harmonic distortion Two-wire to four-wire Four-wire to two-wire Battery feed characteristics Loop current in constant current region, I Stand-by state ...
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PBL 3766 Parameter Digital inputs (C1, C2, E0) Input low voltage Input high voltage Input low current C1 Input high current Digital output (DET) Output low voltage Output ...
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Notes 1. The overload level is specified at the two-wire port with the signal source at the four-wire receive port. 2. The two-wire impedance is programmable by selection of external component values according to /|G · | ...
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PBL 3766 RINGRLY 5 VBAT 6 RSG VBAT 11 DET Figure 7. Pin configuration, 28-pin plastic leaded chip carrier and 22-pin plastic dual-in-line package, top view. Pin Description PLCC: 28-pin, plastic, j-leaded chip carrier. ...
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PLCC DIP Symbol Description 11 8 DET Detector output. Inputs C1 and C2 select one of the two detectors to be connected to the DET output. A logic low level at the enabled (refer to E0) DET output indicates a ...
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PBL 3766 Functional Description and Applications Information Transmission General A simplified ac model of the transmission circuits is shown in figure 8. Circuit analysis yields · ...
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Figure 8. Simplified ac transmission circuit. Figure 9. Hybrid function. Figure 10. Longitudinal feedback loop. TIPX 27/21 TIP + HPT Z TR 20/ 21/16 HPR + ...
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PBL 3766 - -48V Tip Ring Note 6 To other line interfaces D PTC 1 ...
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900 ohm resistive feed substitu- tes for the active state constant current feed. The following paragraphs describe the PBL 3766 battery feed system in detail. Case 1: SLIC in the Active State V < V TRdc SGRef ...
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PBL 3766 The internally set loop current detector threshold for the off-hook to on- LThOn hook transition is 7.3 mA. An external resistor may be D connected from terminal increase the ...
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Figure 12. Battery feed (C2 active state). 5· 12.5 + SGRef 3.0· -7.50 – Figure 13. PBL 3766 loop ...
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PBL 3766 This causes the SLIC to present a high impedance to the line. Power dissipation minimum. No detectors are active. Ringing State (C2 The ring relay driver, RINGRLY, is activ- ated and ...
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Enable Input (E0) TTL compatible enable input E0 controls the function of the output. DET E0, when set to logic level low, enables the output, which is a collector output DET with internal pull-up resistor (approx. 15 kohms ...
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PBL 3766 Ordering Information Package Plastic DIP 22 pin Plastic DIP 22 pin PLCC 28 pin PLCC 28 pin Information given in this data sheet is believed to be accurate and reliable. However no responsibility is assumed for the consequences ...