E-STLC3055N STMicroelectronics, E-STLC3055N Datasheet
E-STLC3055N
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E-STLC3055N Summary of contents
Page 1
... One of the distinctive characteristic of this device is the ability to operate with a single supply voltage (from 5 and self Table 1. Device summary Order code (1) E-STLC3055N 1. ECOPACK® (see Section 10) February 2009 LQFP44 generate the negative battery by means chip DC/DC converter controller that drives an external MOS switch ...
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... Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.1 Layout recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2 External components list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.3 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.1 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 8 Typical state diagram for STLC3055N operation . . . . . . . . . . . . . . . . . 30 9 STLC3055Q vs STLC3055N compatibility 9.1 Typical power consumption comparison . . . . . . . . . . . . . . . . . . . . . . . . . . 31 9.2 Hardware differences ...
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... Gain set in active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 8. SLIC states in active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 9. CREST factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 10. External components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 11. External components @gain set = Table 12. External components @gain set = Table 13. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 14. Power consumption differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 15. Hardware differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 16. Parameter differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 17. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ...
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... TIP/RING typical transition from direct to reverse polarity . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. Metering pulse generation circuit Figure 7. TIP/RING typical ringing waveform Figure 8. Application diagram with metering pulse generation Figure 9. Application diagram without metering pulse generation . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 10. 2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs Figure 11. ...
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... ZB CKTTX CTTX1 CTTX2 FTTX INPUT LOGIC AND DECODER Status and functions SUPERVISION AC PROC TTX PROC REFERENCE RTTX CAC ILTF RD IREF RLIM RTH Block diagram DET OUTPUT LOGIC BGND TIP LINE OUTPUT DRIVER STAGE RING CREV DC PROC CSVR CLK RSENSE DC/DC GATE CONV ...
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... Metering pulse buffer input this signal is sent to the line and used to perform TTX 13 FTTX filtering. 4 wire input port (RX input). A 100 kΩ external resistor must be connected to AGND bias the input stage. This signal is referred to AGND. If connected to single supply CODEC output it must be DC decoupled with proper capacitor. ...
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... AGND pin to avoid noise injection. Off-hook threshold programming pin (via RTH). RTH should be connected close to this 30 RTH pin and AGND pin to avoid noise injection. DC feedback and ring trip input. RD should be connected close to this pin and AGND 31 RD pin to avoid noise injection. 32 ILTF Transversal line current image output ...
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... Human body model ESD RATING Charged device model 1. Vbat is self generated by the on chip DC/DC converter and can be programmed via RF1 and RF2. RF1 and RF2 shall be selected in order to fulfil the a.m limits (see page 17). 3.2 Operating range Table 4. ...
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... It can be set in four different operating modes via the D0, D1, D2 pins of the control logic interface (0 to 3.3 V logic levels). The loop status is carried out on the DET pin (active low). The DET pin is an open drain output to allow easy interfacing with both 3.3 V and 5 V logic levels. ...
Page 10
... Operating modes 4.2.1 Power down When this mode is selected the SLIC is switched off and the TIP and RING pins are in high impedance. Also the line detectors are disabled therefore the off-hook condition cannot be detected. This mode can be selected in emergency condition when it is necessary to cut any current delivered to the line ...
Page 11
... ZAC impedance. ● Transmit and receive: The AC signal present on the 2W port (TIP and RING pins) is transferred to the TX output with -12 dB gain and from the RX input to the 2W port with gain. ● wire conversion: The balance impedance can be real or complex, the proper ...
Page 12
... The metering pulse is obtained starting from two logic signals: ● CKTTX square wave at the TTX frequency ( kHz) and should be permanently applied to the CKTTX pin or at least for all the duration of the TTX pulse (including rising and decay phases). ● D0: enable the TTX generation circuit and define the TTX pulse duration. ...
Page 13
... The circuit showed in page 20 is related to the simple first order filter. Once the shaped and filtered signal is obtained at RTTX buffer output it is injected on the TIP/RING pins with gain or +12 dB gain. It should be noted that this is the nominal condition obtained in presence of ideal TTX echo cancellation (obtained via proper setting of RTTX and CTTX) ...
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... R the self generated negative battery. If for any reason the ringer load will be too low the self generated battery will drop in order to keep the power consumption to the fixed limit and therefore also the ring voltage level will be reduced ...
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... STLC3055N In order to drive up to 5REN (1REN= 6930 Ω µF, US standard necessary to modify the external components as follows: CREV = 2.2 kΩ Rsense = 100 mΩ . Functional description 15/34 ...
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... Figure 9 on page The ground of the power supply (VPOS) has to be connected to the center of the star, let’s call this point Supply GND. This point should show a resistance as low as possible, that means it should be a ground plane. ...
Page 17
... The value of the ring trip rectified average threshold current "I ● The value of the required self generated negative battery "V value is 70 V). This value can be obtained from the desired ring peak level +5 V. ● The value of the maximum current peak sunk from Vpos "IPK". ...
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... BATR provided that the Vpos power supply current capability and the RSENSE programming allow to source all the current requested by the particular ringer load configuration. For high efficiency in HI-Z mode coil resistance @125 kHz must be < 3 Ω ...
Page 19
... CFL Pulse metering filter capacitor 1. In case Zs=Zl, ZA and ZB can be replaced by two resistors of same value: RA=RB=|Zs|. 2. Defining ZTTX as the impedance of RTTX in series with CTTX, RTTX and CTTX can also be calculated from the following formula: ZTTX=50*(Zlttx+2Rp this case CTTX is just operating decoupling capacitor (fp=100 Hz). ...
Page 20
... CFL Pulse metering filter capacitor 1. In case Zs=Zl, ZA and ZB can be replaced by two resistors of same value: RA=RB=|Zs|. 2. Defining ZTTX as the impedance of RTTX in series with CTTX, RTTX and CTTX can also be calculated from the following formula: ZTTX=50*(Zlttx+2Rp this case CTTX is just operating decoupling capacitor (fp=100 Hz). ...
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... STLC3055N Figure 9. Application diagram without metering pulse generation CCOMP ZAC CH VDD RDD DET CONTROL D0 INTERFACE SYSTEM GND SUGGESTED GROUND LAY-OUT CVCC RX TX RRX RX TX AGND BGND CVCC RS RS ZAC ZAC1 GAIN SET STLC3055N DET CKTTX CTTX1 CTTX2 FTTX RTTX CAC ILTF ...
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... Test conditions: V External components as listed in the "typical values" column of external components table. Note: Testing of all parameter is performed at 25 °C. Characterisation as well as design rules used allow correlation of tested performances at other temperatures. All parameters listed here are met in the operating range: -40 to +85 °C. ...
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... Test conditions: V External components as listed in the "typical values" column of external components table. Note: Testing of all parameter is performed at 25 °C. Characterisation as well as design rules used allow correlation of tested performances at other temperatures. All parameters listed here are met in the operating range: -40 to +85 °C. ...
Page 24
... Test conditions: V External components as listed in the "typical values" column of external components table. Note: Testing of all parameter is performed at 25 °C. Characterisation as well as design rules used allow correlation of tested performances at other temperatures. All parameters listed here are met in the operating range: -40 to +85 °C. ...
Page 25
... Test conditions: V External components as listed in the "typical values" column of external components table. Note: Testing of all parameter is performed at 25 °C. Characterisation as well as design rules used allow correlation of tested performances at other temperatures. All parameters listed here are met in the operating range: -40 to +85 °C. ...
Page 26
... Referring to the application diagram shown in components the typical values specified in the page 18, 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" or equivalent. Figure 10. 2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs) E Figure 11 ...
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... STLC3055N Figure 13. G42 receive gain G42 = 20Log|VI/Vrx| Vl Figure 14. PSRRC power supply rejection Vpos to 2W port PSSRC = 20Log|Vn/Vl| Vl Figure 15. L/T longitudinal to transversal conversion L/T = 20Log|Vcm/Vl| Vcm W&G GH1 100μF 100mA DC max 600ohm Zin = 100K 200 to 6kHz 100μF W&G GH1 100μF ...
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... Electrical characteristics Figure 16. T/L transversal to longitudinal conversion T/L = 20Log|Vrx/Vcm| 600ohm Figure 17. VTTX metering pulse level on line Figure 18. V2Wp and W4Wp: idle channel psophometric noise at line and TX. V2Wp = 20Log|Vl/0.774l|; V4Wp = 20Log|Vtx/0.774l| Vl psophometric filtered 28/34 W&G GH1 100μF 300ohm 100μF 100mA ...
Page 29
... STLC3055N 7 Overvoltage protection Figure 19. Simplified configuration for indoor overvoltage protection Figure 20. Standard overvoltage protection configuration for K20 compliance STPR120A BGND STLC3055N RP1 TIP RP1 RING VBAT STPR120A RP1 = 30ohm: RP2 =Fuse or PTC > 18ohm BGND STLC3055N RP1 RP2 TIP LCP1521 RP2 RP1 ...
Page 30
... Typical state diagram for STLC3055N operation 8 Typical state diagram for STLC3055N operation Figure 21. State diagram Tj>Tth PD=1, D0=D1=0 On Hook Condition Note: all state transitions are under the microprocessor control. 30/34 Normally used for On Hook Transmission PD=0, D0=D1=0 Power Down Ring Burst ...
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... STLC3055N 9 STLC3055Q vs STLC3055N compatibility. STLC3055N is pin to pin compatible with the old STLC3055Q but offer a better performance in term of power consumption and can be set in a new gain configuration in order to be compatible with the 3.3 V codec. 9.1 Typical power consumption comparison Table 14. Power consumption differences ...
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... Package information 10 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Figure 22. LQFP44 ( 1.4 mm) mechanical data and package dimensions DIM ...
Page 33
... Changed the unit from the ‘Ilima’ parameter on the page 14/24. Add pin Applications and Block Diagram 8 Add in Table 2 ‘ESD Rating’ 9 Changed VTTX value Added part number “E-STLC3055N” (ECOPACK). 10 Added RRX resistance in the figures 9 and 10. Added Appendix D. Document reformatted. 11 Updated ...
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