STLC30R80 ® INTEGRATED RINGING SLIC FOR SHORT LOOP APPLICATIONS MONOCHIP SLIC SUITABLE FOR SHORT LOOP APPLICATIONS IMPLEMENTES ALL KEY FEATURES OF THE BORSHT FUNCTION INTEGRATED RINGING SOFT BATTERY REVERSAL WITH PROGRAMMABLE TRANSITION TIME ON HOOK TRANSMISSION LOW POWER DISSIPATION IN ALL OPERATING MODES AUTOMATIC DUAL BATTERY OPERATION INTEGRATED RING TRIP DETECTION METERING PULSE INJECTION LOOP START, GROUND START FEATURES SURFACE MOUNT PACKAGE -40 TO +85°C OPERATING RANGE TQFP44 (10 x 10) ORDERING NUMBER: STLC30R80 generation of the ringing signal and the standard battery feeding with full programmability of the DC characteristic. In particular two external resistors allow to set the limiting current value (up to 50mA) and the value of the resistive feeding when not in constant current region. DESCRIPTION The STLC30R80 is a SLIC device suitable for short loop applications. The SLIC provides the BLOCK DIAGRAM D2 D1 CRT RT1 RT2 D0 LINE STATUS DET GDK/AL LOGIC INTERFACE & DECODER CSIN CSOUT RES ILT SUPERVISION TIP LINE INTERFACE ILL RING COMMANDS SW AC+ DC AC BGND + VREG DC ILTF TTXIN ZB REFERENCE & BIAS SWITCHING AC PROCESSOR TX RX ZAC1 November 2001 ZAC RS CAC IREF VCC VDD RLIM DC PROCESSOR AGND CREV CSVR VBAT BASE RTH RDC D99TL431AMOD 1/13 STLC30R80 BASE CSVR VREG BGND RING TIP AGND AGND AGND DET GDK/AL PIN CONNECTION 44 43 42 41 40 39 38 37 36 35 34 CSOUT 1 33 CREV CSIN 2 32 IREF D0 3 31 RLIM D1 4 30 RTH D2 5 29 AGND N.C. 6 28 RT1 N.C. 7 27 RT2 RES 8 26 ILTF VDD 9 25 RDC VCC 10 24 CAC CRT 11 23 TTXIN RX ZAC1 ZAC RS ZB TX VBAT SW. AGND N.C. N.C. 12 13 14 15 16 17 18 19 20 21 22 PINCON_STLC30R80 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit -80 + VCC to +0.4 -80 + VREL to + 0.4 V V V VBAT Battery voltage VCC Positive supply voltage -0.4 to +7 VDD Control Interface Supply Voltage -0.4 to +7 V -2 to +2 V A/R/BGND AGND respect BGND OPERATING RANGE Symbol Parameter Value Unit -40 to +85 °C 4.75 to 5.25 V Control Interface Supply Voltage 3 to 5.25 V Battery voltage -72 to -15 V -0.3 to +0.3 V TopT Operating temperature range VCC Positive supply voltage VDD VBAT A/BGND AGND respect BGND PD (70) Max. power dissipation @ Tamb = 70°C 1.1 W PD(85) Max. power dissipation @ Tamb = 85°C 0.9 W THERMAL DATA Symbol Rth j-amb 2/13 Parameter Thermal resistance Junction to Ambient Typ. Value Unit 60 °C/W STLC30R80 PIN DESCRIPTION Pins 1 Name CSOUT Description Chip-Select for output control bits DET and GDK . Active Low. (*) 2 CSIN 3 D0 Control Interface input bit 0. (*) 4 D1 Control Interface input bit 1. (*) Chip-Select for input control bits latches D0 D1 D2 R0 R1 . Active Low. (*) 5 D2 6 N.C. Not connected Control Interface input bit 2. (*) 7 N.C. Not connected 8 RES Reset Input; active low. After activation the SLIC is put in Power Down state 9 VDD Control interface Power Supply. VDD = 3.3V or VDD = VCC. 10 VCC Positive Power Supply (+5V). 11 CRT Ring-Trip time constant capacitor. 12 N.C. Not connected 13 N.C. Not connected 14 SW Internal switch/limiting current programming pin. 15 AGND 16 VBAT 17 TX Analog Ground Negative Battery Supply. 4 wires output stage (Transmitting Port). 18 ZB Cancelling input of Balance Network for 2 to 4 wires conversion. 19 RS Protection resistors image. The image resistor is connected between this node and ZAC. 20 ZAC AC impedance synthesis. 21 ZAC1 RX buffer output/ AC impedance is connected between this node and ZAC. 22 RX 4 wires input stage (Receiving Port). A 100K external resistor must be connected to AGND to bias the input stage. 23 TTXIN Metering Signal Input (AC) and Line Voltage Drop Programming (DC). If not used must be connectd to AGND. 24 CAC 25 RDC DC current feedback input. The RDC resistor is connected between this node and ILTF. 26 ILTF Transversal Line Current Image. 27 RT2 Input pin to sense ringing current , for Ring-Trip detection. 28 RT1 Input pin to sense ringing current , for Ring-Trip detection. 29 AGND AC feedback input/ AC-DC split capacitor is connected between this node and ILTF. Analog ground. 30 RTH Off-Hook threshold programming pin. 31 RLIM Limiting current programming pin. 32 IREF Voltage reference output to generate internal reference current. 33 CREV Reverse polarity transition time programming. 34 CSVR Battery supply filter capacitor. 35 BASE Driver of the external transistor. Connected to the base. 36 VREG Regulated voltage. Provides the negative supply to the power line drivers. It is connected to the emitter of the external transistor. 37 BGND Battery ground. 38 RING B wire termination output. IB is the current sunk into this pin. 39 TIP 40 AGND A wire termination output. IA is the current sourced from this pin. Analog ground. 3/13 STLC30R80 CONTROL INTERFACE INPUTS OUTPUTS D0 D1 D2 0 0 0 0 1 1 1 0 0 1 1 0 1 1 0 1 0 1 0/1 1 0 OPERATING MODE DET (Active Low) disable off/hk off/hk off/hk ring/trip off/hk off/hk Power down Stand-by Active N.P. Active R.P. Ringing High Impedance Feeding Ground Start A parallel interface allow to control the operation of STLC30R80 through a control bus: - D0 D1 D2 latched input bits defining the Slic operation mode - DET and GDK/AL , tri-state outputs, signal the status of the loop: On/Off-Hook and Ground-Key. Pin GDK/AL goes low also when the device thermal protection is activated or a line fault (Tip to Ring, Tip and/or Ring to Ground or VBAT) is detected (flowing current ≥ 7.5mA). -CSIN: chip select for input bits, active Low, strobes the data present on the control bus into the internal latch. - CSOUT: chip select for output bits ; active Low , when high DET and GDK/AL goes tri-state. D0 D1 D2 CSIN and CSOUT inputs are provided with a 15µA pull-down current to prevent uncontrolled conditions in case the control bus goes floating. According to the table 6 operating modes can be set: 1) Power-Down. 2) Stand-By. 3) Active N.P. 4) Active R.P. 5) Ringing 6) High Impedance Feeding. Power-Down It’s an idle state characterised by a very low power consumption; any functionality is disabled. It can be set during out of service periods just to reduce the power consumption. It is worth noticing that two other conditions can set the Slic in idle state but with some differences as reported in the table: Idle State Power Down DET Disable GDK/AL Disable Reset Thermal Alarm Disable Low Disable Low Stand-By. Mode selected in On-Hook condition when high immunity to common mode currents is needed for the DET bit. To reduce the current consumption, AC feedback loop is disabled and only DET and GDK/AL detectors are active. DC current is limited at 16mA (not programmable); feeding characteristic shown in fig. a. The voltage drop in on-hook condition is 7.8V. Figure a: STLC30R80 DC Characteristic in Stand-By Mode. I 16mA RFEED = 2RP VBAT -7.8V D98TL307 V Active Mode selected to allow voice signal transmission. When in ACTIVE mode the voltage drop in onhook condition is 7.8V in order to allow proper onhook transmission (Fig. b). Resistive Region is programmable by means of external resistor RDC, limiting current can be selected by RLIM and Rswitch resistor. Figure b. STLC30R80 DC Characteristic in Active Mode. I ILIM [20÷50mA] RFEED = RDC 5 RFEED = 2RP D99TL435 4/13 GDK/AL (Active Low) disable gnd-key gnd-key gnd-key disable disable gnd-key VBAT -7.8V +2RP VBAT V STLC30R80 Concerning AC characteristic the STLC30R80 allows to set 2W termination impedance by means of one external scaled impedance that may be complex. Two to four wire conversion is provided by an external network. Such network can be avoided in case of application with COMBOII, in this case the two to four wire conversion is implemented inside the COMBOII by means of the programmable Hybal filter. When in ACTIVE mode it is also possible to perform battery reversal in soft mode (with programmable transition time) without affecting the AC signal transmission. Ringing When ringing mode is selected, by toggling the D2 pin is possible to insert the ringing signal on the line: the ringing frequency is equal to the one applied to the D2 pin. The ringing signal is a balanced trapezoidal wave form where the TIP and RING voltages switch continuously between GND and VREG: VREG is obtained directly from VB1 (VREG = VB1 - 1.8V). The slope of the trapezoidal wave form is set by the external Crev capacitor and it allows to obtain ringing signal with distortion less than 10%: with a fine tuning of this capacitor is possible to obtain distortion value less than 5% (crest factor from 1.25 to 1.35). Figure c. Typical ringing wave form. GND TIP 3V typ. 60V typ. dV/dT set by CREV RING VREG 3V typ. The VB1 value must be higher enough (~70V) in order to obtain ringing signals with more than 40Vrms. The VB2 battery is used only when the line is in off hook and its value can be reduced (typ. 24V) in order to minimize the power consumption. The ring trip detection is performed sensing the variation of the AC line impedance from on-hook (relatively high) to off-hook (relatively low). This particularly ring trip method allows to operate without DC off-set superimposed on the ringing signal and therefore obtaining the maximum possible ring level on the load starting from a given negative battery. It should be noted that such a meted is optimized for operation on short loop applications and may not operate properly in presence of long loop (>500 Ohm). As the ring trip is detected the logic indicator DET is set low and the ringing is automatically disconnected without waiting for the card controller command (auto ring trip). Ringing with high REN number When ringing high number of REN, for example 5REN, or short loops, it could happen that the line AC current, trigger the ring trip circuit producing false ring trip. If this happens, a proper SW resistor (Rswitch) can be inserted between RLIM and the pin. The effect of this resistor is to improve the AC current capability in Ring mode avoiding false ring trip in presence of high REN numbers (typ. 5REN) and short loop. One side effect of Rswitch is to reduce ring trip sensitivity in presence of long loops; therefore it is recommended to adjust Rswitch properly checking the correct behaviour of the device in the two worst-case conditions: - 0Ω loop, Max REN# - Max loop length, 1 REN The lower is the Rswitch value; the higher is the immunity to false Ring trip, producing as side effect a lower Ring trip sensitivity on long loops. The typical value of Rswitch is shown in the External Components Table (pag.7.13) High Impedance Feeding. As Stand-By, this mode is set in On-Hook condition, with further reduced power consumption. Higher power efficiency turns back a lower immunity of the Off-Hook detector to line common mode currents. The DC feeding shows a constant current characteristic (Ilim = 17mA) followed by a resistive range with an equivalent series resistance RFEED = 1600Ω + 2Rp. Thermal protection circuit is still active, preventing the junction temperature, in case of fault condition, to exceed 150°C In High Impedance Feeding most of the circuit is switched off, only the circuit, dedicated to OffHook detection, is powered. This allows to reduce Figure d. STLC30R80 DC Characteristic in High Impedance Feeding I 17mA D98TL373 RFEED = 1600Ω +2RP VBAT -0.8V V 5/13 STLC30R80 Figure 1. Logic Interface Input Timing t1 t1 t2 t3 t4 t5 t6 Min. 100ns 100ns 500ns 100ns 100ns 500ns t3 t2 CSIN D0.1.2 CSOUT DET, GDK Note: All measurements are performed with 100pF on outputs pin and with TTL compatible voltage levels. t4 the total power consumption in On-hook to 30mW (typical). The Off-Hook detection threshold is not programmable but defined at a fixed IDETHI = 8mA(max.) Ground Start. This mode is selected when the SLIC is adopted in a system using the Ground Start feature. In this mode the TIP termination is set in High Impedance (100kΩ) while the RING one is active and fixed at Vbat +4.8V. In the case of connection of RING termination to GND the sinked current is limited to 30mA. When RING is connected to GND both Off-Hook and Ground-Key detectors become active. Power dissipation in this mode with a -48V battery voltage is 100mW. PROTECTION CIRCUIT Suggested protection circuit is based on programmable Trisils (like LCP1511/2) as shown in Fig.2 and Fig. 3, and the surge current is limited by the resistors RPT2 and RPR2, which are PTC types , protecting the device against both lightning and power-cross. METERING PULSE INJECTION STLC30R80 provides external pins and components for Metering Pulse injection. TTXIN pin is the input for the 12kHz or 16kHz Metering Pulse injection. This pin also provides a DC constant current source that is injected into the external RDA resistor (typ. 10kΩ) connected between TTXIN pin and AGND. The voltage drop across TIP and RING line amplifiers and, consequentally the AC swing available. When Metering Pulse injection is not used and voltage drop is not required, TTXIN must be shorted to AGND and RTTX, RDA and CTTX external components must be removed. The TTX cancellation is obtained through an external RTTX and CTTX network connected between 6/13 t6 t5 Figure1_STLC30R80 TTXIN and CAC pins. MISCELLANEOUS - Thermal overload: the integrated thermal protection is activated when Tj reaches 150°C typ.; the Slic is forced in Power-down mode, DET and AL are set Low. - One low cost external transistor allows to reduce the power dissipated in the SLIC itself allowing the use of extreme small size package (TQFP44). The external transistor size/package can be selected depending on the max. power requested by the particular application. EXTERNAL COMPONENTS LIST To set the SLIC into operation the following parameters have to be defined: - The DC feeding resistance "Rfeed" defined as the resistance of the traditional feeding system (most common Rfeed values are: 400, 800, 1000 ohm). - The AC SLIC impedance at line terminals "Zs" to which the return loss measurements is referred. It can be real (typ. 600 ohm) or complex. - The equivalent AC impedance of the line "Zl" used for evaluation of the trans-hybrid loss performance (2/4wire conversion). It is usually a complex impedance. - The value of the two protection resistors Rp in series with the line termination. - The reverse polarity transition time defined as "∆VTR/∆T". - The constant current limit value "Ilim". - Rth: sets the OFF/Hook DETection threshold Once, the above parameters are defined, it is possible to calculate all the external components using the following table. STLC30R80 EXTERNAL COMPONENTS Name RREF (*) CSVR CRT RDC CAC Function Formula Internal current reference programming 1.16 IREF = resistor RREF Battery ripple rejection capacitance 1 CSVR = 2π ⋅ fp ⋅ 1.3MΩ Ring Trip capacitance CRT = (25/fring) ⋅ 470nF DC sinthesized resistance programming resistor AC/DC splitter capacitance RS ZAC ZA ZB CCOMP Protection resistor image 2 wire AC impedance SLIC impedance balancing network Line impedance balancing network AC feedback compensation capacitance RS1 RS2 QEXT RPT1 RPR1 RLIM (*) Sensing resistor for Ring Trip Sensing resistor for Ring Trip External transistor Line series resistor Line series resistor Current limiting setting resistor RSWITCH (***) Current limiting setting resistor RDC = 5[Rfeed -2Rp] RDC ≥ 1kΩ 2 2π ⋅ fo[100 ⋅ Rp] 1000 ⋅ RR 1000 ⋅ RR (1) ≥20Ω ≥20Ω CCOMP = OFF/HOOK DETection threshold setting resistor. CREV Polarity reversal transition time programming CREV = RDA Output Voltage Drop Adjustment RDA = RTTX CTTX Teletax Cancellation Resistor Teletax Cancellation Capacitor RPT2 RPR2 D1 D2 CH CVCC CVB Protection resistor Protection resistor Overvoltage protection Dual Battery Operation Trans-Hybrid Loss Frequency Compensation Power Supply Filter Battery Supply Filter 100nF ±10% 100V @ fp = 1.22Hz 470nF ±20% 6V @ 25Hz 1.5kΩ ±1% 10µF ±20% 15V @ fsp = 10Hz 1 2π ⋅ fsp ⋅ RDC RS = 25 ⋅ 2Rp ZAC = 25[Zs - 2Rp] ZA = 25 ⋅ Zs ZB = 25 ⋅ Zl CAC = 1.16 ; 26kΩ ÷ 64.9kΩ ILIM 24.4kΩ ⋅ RLIM [kΩ] Rswitch [kΩ] = RLIM [kΩ] − 24.4kΩ 1.16 RTH = 200 ⋅ ; 23.7kΩ ÷ 86.6kΩ RTH (**) Typical Value 30.1kΩ ± 1% RLIM = 103 ⋅ 2.5kΩ ±1% 12.5kΩ ±1% 15kΩ ±1% 15kΩ ±1% 220pF ±20% @ fo = 250kHz 600kΩ ±0.5% 600kΩ ±0.5% BD140, MJD32 20W 1/4W 20Ω 1/4W ±1% 51.1kΩ ±1% 47kΩ 26.1kΩ ±1% ITH K 1 ; K= 3750 ∆VTR ∆T ∆Drop ⋅ 20kΩ 9.6 − ∆Drop RTTX = 12.5 ⋅ [Re (ZLTTX) + 2RP] CTTX = 47nF for 5.67V/ms 10kΩ (∆Drop = 3.2V) (2) 3.75kΩ 1 (12.5 ⋅ Im (ZLTTX) ⋅ 2π ⋅ fTTX) ≥ 8Ω ≥ 8Ω CH = CCOMP 1N4448 1N4448 220pF ±30% 100nF ±20% 100nF ±20% 100V Notes: (1) Transistor characteristics: hFE ≥ 25, IC ≥ 100mA, VCEO ≥ 60V, fT ≥ 15MHz. PDISS depends on application, see Appendix. For SMD application possible alternatives are MJD350 in D-PACK or BCP53 in SOT223 (2) Typical value needed for 2.2Vrms metering pulse level, if no metering RDA = 0Ω. (*) RREF and RLIM should be connected close to the corresponding pins of STLC30R80. Avoid any digital line or high voltage swing line to pass close to IREF and RLIM pins. Eventually screen these pins with a GND track. (**) Inside the formula the coefficient 1.16 must be changed to 1.2 if the selected value of I Th is lower than 5mA. (***) This resistor must be used only in presence of REN number and short loop see description at page 5/13. 7/13 STLC30R80 Figure 2. Typical application diagram. ZAC1 ZAC RS VCC VDD VCC VDD To RSWITCH Resistor AGND BGND SW TIP RS ZA CCOMP RX RX TX TX RPR1 RING RING RPR2 RS1(*) ZB CONTROL INTERFACE LCP 1511 VB1 ZB CH RPT2 RPT1 TIP ZAC RT1 D0 D0 D1 D1 D2 D2 DET STLC30R80 BASE RT2 DET GDK/AL CSIN QEXT RS2(*) D2 D1 GDK/AL VBAT CSIN CSOUT VB1 VB2 CSOUT RES RES TTX TTXIN (1) VREG RDA CSVR CREV ILTF RDC CAC RTTX CRT RDC CTTX IREF RLIM RTH REF CRT RTH CREV CAC CSVR From SWITCH PIN (*) 1% match, 600KΩ typ. (1) Components needed only for Metering pulse injection. (2) to be inserted only for 5REN application RSWITCH (2) RLIM D99TL433CMod Figure 3. Test Circuit. CVCC ZAC1 ZAC 12.5KΩ RS 2.5KΩ VCC VDD VCC VDD To RSWITCH Resistor AGND BGND CCOMP 220pF TIP TIP ZAC RX RX TX TX LCP 1511 VB- RS ZA 15KΩ RPT2 30Ω RPT1 20Ω SW RPR1 20Ω RPR2 30Ω RING RING ZB CH 220pF RT1 ZB 15KΩ CONTROL INTERFACE D0 D0 D1 D1 D2 D2 DET GDK/AL CSIN CSOUT RES TTX RS1(*) 600KΩ STLC30R80 (*) 1% match, 600KΩ typ. RS2(*) 600KΩ DET GDK/AL VBAT CSIN VB1 CVB VB2 CSOUT RES CSVR CREV TTXIN RTTX 3.75K CTTX 1µF ILTF RDC CAC RDC 1.5KΩ CRT RREF CRT 470nF RLIM RREF 30.1KΩ RTH RTH 26.1KΩ 10µF CREV 47nF CSVR 100nF From SWITCH PIN RLIM 51.1KΩ 8/13 QEXT BD140 D1 1N4448 BASE RT2 CAC RDA 10K VREG RSWITCH D99TL434CMod STLC30R80 ELECTRICAL CHARACTERISTICS (Test Condition, unless otherwise specified: VCC = 5V, VDD = 3.3V, VB- = -48V, AGND = BGND, Tamb = 25°C). Note: the limits below listed are guaranteed with the specified test condition and in the 0 to 70°C temperature range. Performance over -40 to +85°C range are guaranteed by product characterisation. Symbol Parameter Test Condition Min. Typ. Max. Unit 40 Ω Fig. AC CHARACTERISTICS Zil Long. Impedance Iil Long. Current Capability AC L/T Long. to transv. each wire H.I. feeding per wire (ON-HOOK) 5 mApk STANDBY or ACTIVE per wire (ON-HOOK) 13 mApk ACTIVE per wire (OFFHOOK). IT = Transversal Current 80 -IT mApk with nominal Rp value 60 dB C5 T/L Transv. to long. 40 dB C3 2wRL 2W return loss. 300 to 3400Hz 22 dB C6 THL trans-hybrid loss. 1020Hz; 20Log |VRX/VTX| 30 dB C2 Ovl 2W overload level ACTIVE MODE at line terminals on ref. imped. 3.2 dBm TXoff TX output offset -200 200 mV G24 Transmit gain abs. 0dBm 1020Hz -12.38 -12.02 dB C4 G42 Receive gain abs. 0dBm 1020Hz 5.74 6.1 dB C1 G24fq tx gain variation vs. frequency rel. 1020Hz, 0dBm 300 to 3400Hz -0.1 0.1 dB G42fq rx gain variation vs. frequency rel. 1020Hz, 0dBm 300 to 3400Hz -0.1 0.1 dB V2wp idle channel noise at line terminals psophometric -82 -78 dBmp C8 V4wp idle channel noise at TX port psophometric -90 -84 dBmp C7 Thd total harm. dist. 2w-4w, 4w2w 0dBm, 1KHz Il = 20 to 45mA -50 dB GTTX Transfer Gain VTTX = 100mVRMS @ 16kHz 14.5 dB VL GTTX = 20Log VTTX with RL = 200Ω THD (TTX) TTX Harmonic Distortion 2.2VRMS = on 200Ω 3 % DC CHARACTERISTICS (TTX pin connected to ground) Vlohi Line voltage Il = 0, H.I. feeding 47 47.4 47.8 V Vlo Line voltage Il = 0, SBY/ACTIVE/ONHOOK 38.6 39.9 40.6 V Ilims Short circ. curr. Rloop = 0, SBY 14 16 18 mA Ilimb Short circ. curr. Rloop = 0, H.I. feeding 11 17 20 mA Ilima Lim. current accuracy Rel to progr. val. 20 to 45mA ACTIVE NP, RP -10 10 % Rfeed Feed res. accuracy ACTIVE NP, RP -10 10 % Rfeed H.I. Feeding resistance H.I. feeding 1100 2100 Ω 9/13 STLC30R80 ELECTRICAL CHARACTERISTICS (continued) Symbol Test Condition Min. Ilact Feed current ACTIVE Parameter ACTIVE NP, RP Rloop = 1900Ω RDC = 1.5kΩ 18 Typ. Max. mA Ilsby Feed current STBY STY, Rloop = 2.2KΩ RDC = 1.5kΩ 13 mA ITIP Tip Leackage Current Ground Start IGS Ring Lead Current Ground Sart Ring to GND IDA Reference current sourced by TTX IN pin for Voltage Drop programming 1 Unit Fig. µA 33 mA -60 µA DETECTORS Idet Idet H.I. Off-hook current threshold ST-BY, ACTIVE Rel. to progr. val. 7 to 11mA -10 +10 % Rel. to progr. val. 3 to 6mA -20 +20 % Off-Hook current threshold H.I. feeding Hys Off/On hook hyst. ST-BY, ACTIVE 5 Td Dialling distortion ACTIVE ILL Ground Key Current threshold ILL = IB - IA TIP to RING to GND or RING to GND Igst Ground Start Detection Threshold Igst = 2 ⋅ Idet -10 2 8 15% Idet -1 mA mA +1 7.5 ms mA +10 % DIGITAL INTERFACE INPUTS: D0, D1, D2, CSIN, CSOUT Vih Input high voltage VDD = 3.3V Vil Input low voltage VDD = 3.3V Iih Iil V 0.8 V Input high current 30 µA Input low current 10 µA 0.5 V OUTPUTS: DET, GDK /AL Vol Output low voltage Iol = 0.75mA; CSOUT = LOW Voh Output high voltage Ioh = 0.1mA; CSOUT = LOW 2.4 Tri-State Output Current CSOUT = High -10 IOZ V +10 µA POWER SUPPLY REJECTION PSRRC VCC to 2W port Vripple = 0.1Vrms 50 to 4000Hz 27 dB C9 PSRRB Vbat to 2W port Vripple = 0.1Vrms 50 to 4000Hz 30 dB C9 POWER CONSUMPTION ICC VCC supply current H. I. Feeding On-Hook SBY On Hook ACTIVE On Hook 1.0 3.5 5.0 mA mA mA IBAT VBAT supply current H. I. Feeding On-Hook SBY On Hook ACTIVE On Hook 0.5 2.5 4.5 mA mA mA IDD VDD Supply Current Any operating mode 320 µA 10/13 100 STLC30R80 APPENDIX A Battery voltage autoset The STLC30R80 shows a line voltage depending on the voltage applied to Vbat pin. In particular in the On-Hook the line voltage is Vbat if the SLIC is put in HI-Z mode or Vbat -7.8V if the SLIC is put in Active mode. If the battery voltage applied to the Vbat pin is always -70V (necessary to generate the proper ringing signal), during the On-Hook the line voltage is higher than 60V. A simple circuit to generate the proper Off-Hook battery voltage can be used starting from the -70V as shown in the below figure A1. The RING command (active low) is used to switch on the NPN transistor and apply the battery voltage directly to the Vbat pin. When the RING command is high the NPN transistor is off and the zener diode reduces the voltage applied to the Vbat pin. Figure A1. VCC 470KΩ BC556 RING STLC30R80 47KΩ VBAT 68KΩ BC558 24V 470KΩ D00TL461 BATTERY VOLTAGE (-70V) 11/13 STLC30R80 mm DIM. MIN. TYP. A inch MAX. MIN. TYP. 1.60 A1 0.05 A2 1.35 B 0.30 C 0.09 0.063 0.15 0.002 0.006 1.40 1.45 0.053 0.055 0.057 0.37 0.45 0.012 0.014 0.018 0.20 0.004 0.008 D 12.00 0.472 D1 10.00 0.394 D3 8.00 0.315 e 0.80 0.031 E 12.00 0.472 E1 10.00 0.394 E3 8.00 0.315 L 0.45 0.60 0.75 OUTLINE AND MECHANICAL DATA MAX. 0.018 0.024 L1 1.00 K 0°(min.), 3.5˚(typ.), 7°(max.) 0.030 0.039 TQFP44 (10 x 10) D D1 A A2 A1 33 23 34 22 0.10mm .004 B E B E1 Seating Plane 12 44 11 1 C L e K TQFP4410 12/13 STLC30R80 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 2001 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 13/13