STLC3080 STMicroelectronics, STLC3080 Datasheet
STLC3080
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STLC3080 Summary of contents
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... January 2004 SUBSCRIBER LINE INTERFACE CIRCUIT -40 TO +85°C OPERATING RANGE DESCRIPTION The STLC3080 is a SLIC device suitable for a wide range of applications: public (CO), transmis- sion (DLC) and private (PABX). The SLIC pro- vides the standard battery feeding with full pro- grammability of the DC characteristic. In particular ...
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... STLC3080 PIN CONNECTION CSOUT CSIN RES VDD VCC CRT ABSOLUTE MAXIMUM RATINGS Symbol V Battery voltage BAT V Positive supply voltage CC V Control Interface Supply Voltage DD I Current into relay drivers REL A/R/BGND AGND respect BGND respect RGND OPERATING RANGE Symbol T Operating temperature range ...
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... CKRING Clock at ringing frequency for relay synch and time reference for Automatic activation 43 DET Off-hook and Ring-Trip detection bit. Tri-State Output/Active Low. 44 GDK/ AL Ground-Key/Alarm detection bit. Tri-State Output. Active Low. * Input pins provided with 15 A sink to AGND pull-down. Description = 3. STLC3080 3/23 ...
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... DET and GDK/AL de- tectors are active. DC current is limited at 16mA (not programma- ble); feeding characteristic shown in fig. a. The voltage drop in on-hook condition is 7.8V. Figure a: STLC3080 DC Characteristic in I 16mA Active Mode selected to allow voice signal transmission. When in ACTIVE mode the voltage drop in on- hook condition is 7 ...
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... CKRING low must last 1 s minimum. If the synchronisation is not required, CKRING in- put must be steadily kept Low. All the STLC3080 relay drivers are open drain with the source connected to the RGND pin. Each relay drivers integrates a protection structure that allows to avoid external kick - back diodes, using both 5V or 12V relays ...
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... Rel0/1 Drive DET Power Down Enable Disable Reset Disable Disable Thermal Enable Low Alarm Ringing When Ringing mode is selected the STLC3080 activates the ringing relay injecting the ringing sig- nal on the line. 6/23 Operating Mode (Mode = High) D2 RES 0 1 Power Down 1 1 ...
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... A detailed description is reported in the Appendix A. DUAL BATTERY CONFIGURATION STLC3080 is also meant for low power consump- tion systems using Dual Battery solution suf- ficient to connect the collector of the external tran- sistor, through a diode, to the reduced battery (see Fig ...
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... STLC3080 When a fault is detected the line current is limited in order to avoid any damage on the device itself and also on the external transistor. MISCELLANEOUS - Thermal overload: the integrated thermal pro- tection is activated when Tj reaches 150°C typ.; the Slic is forced in Power-down mode, DET and AL are set Low. The RELR relay driver is turned off while it is still possible to control REL0 and REL1 through R0 and R1 inputs ...
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... These resistors are needed to activate the power cross detection circuit, they should withstand the typical lighting voltage. If the power cross detection is not needed R1, R2 can be avoided. (*) R and RLIM should be connected close to the corresponding pins of STLC3080. REF Avoid any digital line or high voltage swing line to pass close to I (**) Inside the formula the coefficient 1 ...
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... CC DD STLC3080 CAC ILTF RDC CRT IREF RLIM RDC RREF RLIM CRT + CAC AGND BGND RGND REL0 CC DD STLC3080 CAC ILTF RDC CRT IREF RLIM RDC RREF RLIM CRT + CAC REL1 RELR RT PCD RPT1 TIP LCP VB- 1511 RPR1 RING RT1 RS1 RR ...
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... L G 20Log TTX V TTX with R = 200 L 2. 200 RMS H.I. feeding SBY/ACTIVE/ON- 38.9 HOOK SBY loop H.I. feeding loop Rel to progr. val 50mA ACTIVE NP, RP 1.08 ACTIVE NP, RP H.I. feeding 1100 STLC3080 = 5V 3.3V Typ. Max. Unit 40 5 mApk 13 mApk 80 -I mApk ...
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... STLC3080 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Ilact Feed current ACTIVE Ilsby Feed current STBY I Tip leackage current TIP I Ring Lead Current GS I Reference current sourced DA by TTX IN pin for Voltage Drop programming DETECTORS I Off-hook current threshold det ST-BY, ACTIVE I H.I. Off-Hook current threshold ...
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... REL0 REL1 RELR RT PCD RPT1 20 TIP RPR1 20 RING RT1 RS1 600K RR 600 RS2 600K RT2 VREG BASE VRING VBAT D1 VB- 1N4448 CSVR VB- CREV RTH RLIM RTH CREV CSVR 47nF 100nF D98TL313G STLC3080 Unit Fig D98TL312 VREL RPT2 30 LA RPR2 30 LB 13/23 ...
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... STLC3080 The flow-chart in Fig.A1 describes the sequence of state machine supervising the STLC3080 op- eration when the control is set for Active mode D2 The state machine is a synchronous sequential circuit internally clocked by a free running oscilla- tor ; the ringing frequency applied at the CKRING input is used to generate the long time delay WTIME=128xCKRING necessary for proper op- eration as further described ...
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... Figure A1. STLC3080 15/23 ...
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... STLC3080 STLC3080: allowed Rfeed values vs. Ilim The STLC3080 device has been designed in or- der to fit in a small SMD package (TQFP44). This target has been achieved by using a dedicated circuit for power management based on one ex- ternal transistor (Qext). The particular power management circuit adopted allows to define the percentage of power dissi- pated on the SLIC itself and on the Qext ...
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... Vbat = -48V, max Tamb = 70°C, Ilim = 25mA, Qext able to dissipate 1W, the possible values of Rfeed can be found in fig. 1 and are limited by the b2 curve (upper limit) and the a1 curve (lower limit). In particular considering the Ilim = 25mA the Rfeed allowed range will be: 500 < Rfeed < 1700 STLC3080 17/23 ...
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... STLC3080 STLC3080 Test Circuits referring to the applica- tion diagram shown in figure 4 and using as exter- nal components the typ. values specified in the Figure C1. Receive Gain. TIP 300 STLC 3080 Vl test circuit 300 RING G42 = 20log (Vl / Vrx ) Figure C3. T/L Transversal to Longitudinal Conversion Rp TIP ...
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... PSRRB = Power Supply Rejection V 600 PSRRB = 20log (VnVbat / Vl ) PSRRC = 20log (VnVcc / Vl ) Figure C8. Idle channel psophometric noise TX Vtx 600 RX V2wp = 20log (Vl / 0.775V ) to 2W Port Port BAT TIP STLC 3080 Vl test circuit RING Vbat/Vcc STLC3080 at line terminals. TIP TX STLC 3080 Vl test circuit RX RING 0.1Vrms Vtx 19/23 ...
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... Fig. D1). The Ring-Trip condition is detected by sensing the DC component of the line current, rejecting the AC component. With RR = 600 Trip threshold is: Iline>7.5mA When the Ring-Trip is detected, the STLC3080: - deactivates the ringing relay RELR (if CKRING is low); - indicates the ring-trip detection by setting DET=low; ...
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... I decreases proportionally to the loop re- CRT sistance. I CRT +30uA I th=7.5mA(typ) LINE (if RR=600 and RS1=RS2=600K ) -30uA Figure D3. Ring Trip detection signals. Vring=60Vrms @ f=25Hz . In LINE OFF_HOOK STLC3080 I LINE VB=-48Volt DET RING wire CRT RING-TRIP DETECTION 21/23 ...
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... STLC3080 mm DIM. MIN. TYP. MAX. A 1.60 A1 0.05 0.15 0.002 A2 1.35 1.40 1.45 0.053 B 0.30 0.37 0.45 0.012 C 0.09 0.20 0.004 D 11.80 12.00 12.20 0.464 D1 9.80 10.00 10.20 0.386 D3 8.00 E 11.80 12.00 12.20 0.464 E1 9.80 10.00 10.20 0.386 E3 8.00 e 0.80 L 0.45 0.60 ...
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... Human Body Model (MIL-STD 883 Method 3015): with C = 100pF 1500 and performing 3 pulses for each pin versus V and GND. Device characterization showed that, in front of the STMicroelectronics Internaly Quality Standards, all pins of STLC3080 withstand at least 1000V. One particular pin (pin N 41) withstand 500V only. ...