STLC3065 STMicroelectronics, STLC3065 Datasheet
STLC3065
Available stocks
Related parts for STLC3065
STLC3065 Summary of contents
Page 1
... ORDERING NUMBERS: STLC3065Q INTEGRATED THERMAL PROTECTION -40 TO +85 C OPERATING RANGE DESCRIPTION The STLC3065 is a SLIC device specifically de- signed for WLL (Wireless Local Loop) application. One of the distinctive characteristics of this de- vice is the ability to operate with a single supply voltage (from +5.5V to +15.8V) and self generate ...
Page 2
... STLC3065 DESCRIPTION (continued) MOS switch. The self generated battery voltage tracks the line resistance. In this way the power dissipation in- side the device is low enough to allow the use of small SMD package (TQFP44). Other useful characteristics for application in the WLL environment are the integrated ringing gen- ...
Page 3
... AGND is setting the reverse polarity transition time. This is the same transition time used to shape the ”trapezoidal ringing” during ringing injection. 26 CVCC Internal positive voltage supply filter. Value 5.5 to +15.8 -100 to +100 , P -0. -40 to +85 -74 max. Value Typ. 60 Function input impedance. This signal is referred to AGND. If STLC3065 Unit Unit C/W 3/27 ...
Page 4
... Feedback input for DC/DC converter controller. 22 CLK Power Switch Controller Clock (typ. 125KHz). From version marked STLC3065 A5, this pin can also be connected to CVCC or AGND. When the CLK pin is connected to CVCC an internal auto-oscillation is internally generated and it is used instead of the external clock. When the CLK pin is connected to AGND, the GATE output is disabled. ...
Page 5
... The DC/DC converter controller is synchronised with an external CLK (125KHz typ.). From version marked STLC3065 A5, it can be synchronised to an internal clock generated when the pin CLK is connected to CVCC. One sensing resistor in series to Vpos supply allows to fix the maximum allowed input peak current ...
Page 6
... STLC3065 Figure 1. Dual Port Concept. Tip Line Driver Ring Sw4R 300 1500 ohm Table 2. Dual Port control OPER. MODE Power Down High Z feed Power Down/ High Z feed High Z feed. Power Down ...
Page 7
... This mode can be selected in emergency condi- tion when it is necessary to cut any current deliv- ered to the line. This mode is also forced by STLC3065 in case of thermal overload (Tj > 140 C). In this case the device goes back to the previous status as soon as the junction temperature de- crease under the hysteresis threshold ...
Page 8
... RING wire connected to a 300mA (min.) current source connected to Vbat. It should be noted that since Vbat is self gener- ated by the STLC3065 and it is tracking the line voltage depending on the loop resistance con- nected to the selected port its voltage can range typically from -12V to -50V ...
Page 9
... TIP 40V typ ON-HOOK dV/dT set by CREV RING STLC3065 When the control pins set battery reversal the line polarity is reversed with a proper transition time set via an external capacitor (CREV). METERING PULSE INJECTION (TTX) The metering pulses circuit consist of a burst shaping generator that gives a square wave shaped and a low pass filter to reduce the har- monic distortion of the output signal ...
Page 10
... RTrip disable disable @fr line 1 When this mode is selected STLC3065 self gen- erate an higher negative battery (-70V typ.) in or- der to allow a balanced ringing signal of typically 62Vpeak. The SLIC core is set in ring mode via the control inputs D0 and D1 set respectively to 0 and 1. ...
Page 11
... D2 toggling in order to effectively disconnect the ring signal and then set the STLC3065 in the proper operating mode (Normally ACTIVE). RING LEVEL IN PRESENCE OF MORE TELE- PHONE IN PARALLEL. ...
Page 12
... STLC3065 External Components List In order to properly define the external compo- nents value the following system parameters have to be defined: The AC input impedance shown by the SLIC at the line terminals ”Zs” to which the return loss measurement is referred. It can be real (typ. 600 ) or complex. ...
Page 13
... RLV = 63 LOTTX = (|Zlttx + 2Rp + 18 |/|Zlttx LOTTX CS = /(2 RLV) 100nF 10% 10V @ = 6ms, RLV = 27.1k CFL = 2/(2 fttx RLV) 1nF 10% 10V @fttx = 12kHz 100nF 20% 10V 100 F 20% 100V (5) 470nF 20% 100VL STLC3065 Typ. Value 26k 1% 1.5nF 10% 100VL 4.12k 25k 1% 30k 1% 30k 600 @ ...
Page 14
... STLC3065 EXTERNAL COMPONENTS (continued) Name Function CRD (6) High frequency noise filter Q1 DC/DC converter switch P ch. MOS transistor D1 DC/DC converter series diode RSENSE DC/DC converter peak current limiting L (8) DC/DC converter inductor CF1 DC/DC converter feedback loop stability RF1 Negative battery programming level RF2 Negative battery programming level (1) In case Zs=Zl, ZA and ZB can be replaced by two resistors of same value: RA=RB=|Zs| ...
Page 15
... BGND CVCC VPOS RSENSE GATE VBAT1 VBAT VF CLK TIP1 STLC3065 RING1 TIP2 RING2 CSVR CREV CREV RTH RLIM RTTX CAC ILTF RD IREF RTTX RD RREF CRD CTTX CAC STLC3065 Q1 D1 RF1 L CV RF2 CLK RP TIP1 RP RING1 RP TIP2 RP RING2 CSVR RLIM RTH D96TL252E 15/27 ...
Page 16
... STLC3065 ELECTRICAL CHARACTERISTICS Test conditions 6.0V, AGND = BGND, Normal Polarity, T pos External components as listed in the ”Typical Values” column of EXTERNAL COMPONENTS Table. Note: Testing of all parameter is performed Characterisation as well as design rules used allow correlation of tested performances at other temperatures. All parameters listed here are met in the oper- ating range: -40 to +85 C ...
Page 17
... ITH = 9mA) ACT. mode, RTH = 28.7k 1% (Prog. ITH = 9mA) ACT. mode, RTH = 28.7k 1% (Prog. ITH = 9mA) ACT. mode, RTH = 28. (Prog. ITH = 9mA mode, RTH = 28.7k 1% 10.5 (Prog. ITH = 9mA mode, RTH = 28.7k 1% (Prog. ITH = 9mA) STLC3065 Max. Unit 0.12 dB -73 -68 dBmp -68 dBmp -75 -70 dBmp -75 dBmp ...
Page 18
... STLC3065 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter IONTHI On/hook current threshold RONTHI On/hook loop resistance threshold Irt Ring Trip detector threshold range Irta Ring Trip detector threshold accuracy Trtd Ring trip detection time Td Dialling distortion Rlrt (1) Loop resistance ThAl Tj for th. alarm activation (1) Rlrt = Maximum loop resistance (incl ...
Page 19
... STLC3065 Test Circuits Referring to the application diagram shown in fig the STLC3065 datasheet and using as external components the Typ. Values specified in the ”External Components” Table (page 16) find below the proper configuration for each measurement. All measurements requiring DC current termination should be performed using ”Wandel & Goltermann DC Loop Holding Circuit GH-1” ...
Page 20
... F Figure A5. PSRRC Power supply rejection Vpos to 2W port PSSRC = 20Log|Vn/Vl| Vl 600ohm 20/27 TIP1/TIP2 TX STLC3065 application circuit RING1/RING2 RX TIP/1TIP2 TX STLC3065 application circuit RX RING1/RING2 W&G GH1 TIP1/TIP2 TX 100 F STLC3065 100mA DC max application circuit Zin = 100K 200 to 6kHz 100 F RING1/RING2 RX VPOS ~ Vn Vtx Vrx ...
Page 21
... F STLC3065 100mA DC max application Vl circuit Zin = 100K 200 to 6kHz 100 F RING1/RING2 W&G GH1 TIP1/TIP2 100 F STLC3065 100mA DC max application circuit Zin = 100K 200 to 6kHz 100 F RING1/RING2 TIP1/TIP2 TX STLC3065 application 200ohm circuit RING1/RING2 RX CKTTX fttx (12 or 16kHz) STLC3065 Vrx 21/27 ...
Page 22
... F Figure A10. AIS Isolation between 2 wire ports AIS = 20Log|Vais/Vl| W&G GH1 600ohm Vl 100 F Vais 600ohm 100 F 22/27 TIP1/TIP2 STLC3065 application circuit RING1\RING2 TX TIP1/TIP2 100 F STLC3065 100mA application DC max Zin = 100K circuit 200 to 6kHz 100 F RING1/RING2 TIP2/TIP1 RX RING2/RING1 TX Vtx psophometric filtered RX Vrx ...
Page 23
... Figure A11. Vring, Vlis: Ring Voltage and port isolation 1800ohm Vring (true rms meter) Vlis (psophometric meter) TX TIP1/TIP2 STLC3065 1 F application circuit RING1/RING2 100 F TIP2/TIP1 RX 600ohm 100 F RING2/RING1 D2 fring (25Hz) STLC3065 23/27 ...
Page 24
... STLC3065 STLC3065 OVERVOLTAGE PROTECTION Figure B1. Simplified configuration for indoor overvoltage protection BGND STLC3065 TIP1 RING1 TIP2 RING2 VBAT Figure B2. Standard overloltage protection configuration for k20 compliance BGND TIP1 RING1 STLC3065 TIP2 RING2 VBAT NOTE: RP2 should guarantee Ipeak < 10A: otherwise two LCP1511 maybe used ...
Page 25
... Note: all state transitions are under the microprocessor control. (*) = When the ringing signal is sent to both lines, the STLC3065 is not able to detect the answering line. To detect the answering line routine is needed that disables first the line 1 (forcing P1=0) and then the line 2 ( forcing P2= detect which line is in Off Hook condition. The On Hook condition is declared when it persists for T> ...
Page 26
... STLC3065 26/27 ...
Page 27
... The ST logo is a registered trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com STLC3065 27/27 ...