PBL38640/2SO

Product Summary

The PBL38640/2SO Subscriber Line Interface Circuit (SLIC) is a 90V bipolar integrated circuit for use in Digital Loop Carrier, FITL and other elecommunications equipment. The PBL38640/2SO has been optimized for low total line interface cost and a high degree of flexibility in different applications. The PBL38640/2SO emulates resistive loop feed, programmable between 2x50 Ω and 2x900 Ω, with short loop current limiting adjustable to max 45 mA. In the current limited region the loop feed is nearly constant current with a slight slope corresponding to 2x30 kΩ.

Parametrics

Absolute maximum ratings: (1)Storage temperature range, TStg: -55 to +150℃; (2)Operating temperature range, TAmb: -40 to +110℃; (3)Operating junction temperature range, TJ: -40 to +140℃; (4)Power supply, -40℃ ≤ TAmb ≤ +85℃, VCC with respect to A/BGND, VCC: -0.4 to 6.5V; (5)Power supply, -40℃ ≤ TAmb ≤ +85℃, VBat2 with respect to A/BGND, VBat2: VBat to 0.4V; (6)Power supply, -40℃ ≤ TAmb ≤ +85℃, VBat with respect to A/BGND, continuous, VBat: -75 to 0.4V; (7)Power supply, -40℃ ≤ TAmb ≤ +85℃, VBat with respect to A/BGND, 10 ms, VBat: -80 to 0.4V; (8)Continuous power dissipation at TAmb ≤ +85℃, PD: 1.5W; (9)Voltage between AGND and BGND, VG: -0.3 to +0.3V; (10)Ring relay supply voltage, BGND: +14V; (11)Input voltage VDT, VDR, VBat: AGND V; (12)Input current IDT, IDR: -5 to 5mA; (13)Digital inputs, outputs (C1, C2, C3, DET), Input voltage, VID: -0.4 to VCC V; (14)Digital inputs, outputs (C1, C2, C3, DET), Output voltage, VOD: -0.4 to VCC V; (15)Maximum supplied TIPX or RINGX current, ITIPX, IRINGX: -100 to +100 mA; (16)TIPX or RINGX voltage, continuous (referenced to AGND), VTA, VRA: -80 to 2V; (17)TIPX or RINGX, pulse < 10 ms, tRep > 10 s, VTA, VRA, VBat: -10 to 5V; (18)TIPX or RINGX, pulse < 1 μs, tRep > 10 s, VTA, VRA, VBat: -25 to 10V; (19)TIPX or RINGX, pulse < 250 ns, tRep > 10 s, VTA, VRA VBat: -35 to 15V.

Features

Features: (1)24-pin SSOP package; (2)High and low battery with automatic switching; (3)65 mW on-hook power dissipation in active state; (4)On-hook transmission; (5)Long loop battery feed tracks Vbat for maximum line voltage; (6)Only +5 V feed in addition to battery; (7)Selectable transmit gain (1x or 0.5x); (8)No power-up sequence; (9)Programmable signal headroom; (10)43V open loop voltage at -48V battery feed; (11)Constant loop voltage for line leakage <5 mA (RLeak ~ >10 kΩ at -48V); (12)Full longitudinal current capability during on-hook state.

Diagrams