Le79555-2VC Legerity, Inc., Le79555-2VC Datasheet
Le79555-2VC
Related parts for Le79555-2VC
Le79555-2VC Summary of contents
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... ORDERING INFORMATION Device Performance Grade/Package Le79555-1VC 52 dB Pol. Rev., 44-pin TQFP Le79555-1QC Pol. Rev., 32-pin QFN Le79555-2VC 63 dB Pol. Rev., 44-pin TQFP Le79555-2QC Pol. Rev., 32-pin QFN Le79555-3VC Pol. Rev., 44-pin TQFP Le79555-3QC Pol. Rev., 32-pin QFN Le79555-4VC Pol ...
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... LOGIC INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 LOGIC OUTPUT DET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 RING-TRIP DETECTOR INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 LOOP DETECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 RELAY DRIVER OUTPUT .11 DC FEED CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 TEST CIRCUIT SCENARIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 APPLICATION CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 LINECARD PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 PHYSICAL DIMENSIONS .20 44-PIN TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 32-PIN QFN (8X8 .21 REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 REVISION .22 REVISION .22 2 Le79555 Data Sheet ...
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... Active, Ringing, Standby, Disconnect, Reverse Polarity, and Tip Open. The Le79555 device is a low cost, high performance device providing key features required for POTS markets worldwide, including: low power dissipation and ground key detection, as well as all of the features offered currently by Legerity's Transformer SLIC family, Am7920/22 ...
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... When an off hook condition occurs, the DB pin becomes more positive than the DA pin, and the DET pin will go low to indicate an off-hook. Ring Relay Driver The ring relay driver is active only in the Ringing state. Relay Driver A relay driver is activated by logic Low at either input pin, D1, or D2. D1 controls relay driver RYOUT1; D2 controls relay driver RYOUT2. 4 Le79555 Data Sheet ...
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... 32-Pin QFN Exposed Pad Le79555 Data Sheet N N/C 29 HPB 28 N/C 27 HPA 26 N/C 25 VTX 24 N/C RSVD N HPB 21 HPA 20 VTX 19 18 RSVD ...
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... This must be connected to the most negative battery on the SLIC device pin side of D Exposed Battery Pad the test and application circuits. 6 Description • VDC KDC VAB = Le79555 Data Sheet . KDC is the VDC scale factor. shown on VBH ...
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... In 44-pin TQFP package 52°C/W typ In 32-pin QFN package 25° C/W typ 1.5 kV ° –40 to +85ºC 4.75 to 5.25 V –40 to – –100 to +100 Ω min Le79555 Data Sheet BAT BAT + 0 ° ° ° C) and industrial (− temperature ...
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... SPECIFICATIONS Refer to Figure 9 for the Le79555 test circuit specifications. Transmission Performance Description 2-wire return loss Analog output (VTX) impedance Analog (VTX) output offset voltage Overload level, 2-wire Overload level THD (Total Harmonic Distortion) THD, On hook Longitudinal Capability See Figure Description Longitudinal to metallic L-T, L-4 ...
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... RB to GND = 100 Ω Test Conditions (See Note 1) Min 3.4 kHz 100 mV rms) RIPPLE 3.4 kHz Off-hook constant current region 500 mV pp) RIPPLE CAS pin BAT Le79555 Data Sheet Typ Max Unit Note +0. +0. –5.92 3 –6.02 –5. +0.35 3,4 – ...
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... Test Conditions (See Note RSN 200 Hz to 3.4 kHz Test Conditions (See Note 1) Test Conditions (See Note 0.3 mA OUT I = –0.1 mA OUT Test Conditions (See Note 1) Source resistance = 2 MΩ Le79555 Data Sheet Min Typ Max Unit Note 45 70 130 190 mW 860 1200 350 400 ...
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... Description On voltage Off leakage Zener breakover Zener On voltage 1. Unless otherwise noted 600 Ω. Also, refer to the Le79555 device test circuit in Figure Overload level is defined as THD = 1%. b) Overload level is defined as THD = 1.5%. 3. Balance return signal is the signal generated at V programmed impedance. ...
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... D D off-hook the regulator filter capacitor and f CAS frequency. Standby loop current (resistive region). Le79555 Data Sheet DET Output X X Loop detector Ring Ground (see note) Ring trip Ring trip Loop detector Loop detector ...
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... Loop Current (mA) 625 ---------- - where DC1 DC2 BAT | − V − 7.2 V − Diode Figure 3. Feed Programming A (TIP) RSN SLIC B (RING) RDC Le79555 Data Sheet /210 DC1 DC2 13 ...
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... BRS = 20 log Figure 6. Longitudinal Balance VTX A (TIP SLIC AGND (RING Closed, S1Open / V ) 4-L Long. Sig. Gen log Le79555 Data Sheet ...
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... Figure 7. Two-Wire Return Loss VTX A (TIP) SLIC AGND = 600 Ω (RING) RSN Figure 8. RFI 200 Ω 1 200 Ω Le79555 Data Sheet R 75 kΩ 180 kΩ 150 k Ω Ω A (TIP ...
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... V1 VBH 0.47 µF IN400x C C CH1 CH2 15 nF 560 1.3 kΩ C FIL 0.47 µF L Low ESR 1 1mH D CHCLK1 MUR120 16 Figure 9. Le79555 Engineering Test Circuit DA VCC Le79555 DB VTX A (TIP) HPA RSN HPB B (RING) RDC RINGOUT VDC RYOUT1 AGND RYOUT2 D2 BGND RSVD C1 QBAT ...
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... QBAT C QB 0.33 µF D VBH VBAT MUR120 C V1 CHS C CH1 1.3 kΩ VREG L 1 1mH L D CHCLK1 MUR120 Le79555 Data Sheet +5 VA VCC 35.7 k Ω VIN # VTX 100 nF R TX1 125 kΩ R VOUT # 124 kΩ OUT RSN ...
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... C5 #3 INT RST VIN #4 VOUT #4 CD1 #4 CD2 # CHCLK VCCA VCCD VREF AGND DGND Le79555 Data Sheet +5VD kΩ DXA/DU DRA/DD TSCA DXB DRB TSCB FS/FSC PCLK/DCL MCLK/E1 DCLK/S0 CS/PG DIO/S1 INT RST ...
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... R > 5) 100 nF 20 909 k 1% 330 nF 20% 400 1% Le79555 Data Sheet Rating Comments Note 50 V 100 100 100 V 100 V 100 V 100 0.1 W 0.1 W 0.1 W 0 100 V 100 ...
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... PHYSICAL DIMENSIONS 44-Pin TQFP TQFP 044 Note: BSC is an ANSI standard for basic centering. Dimensions are measured in millimeters. 20 TQFP 044 Le79555 Data Sheet Dwg rev. AS; 08/00 ...
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... QFN (8x8) Le79555 Data Sheet 21 ...
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... Thermal data for 32-pin QFN package • Added a note regarding maximum power dissipation values under the Absolute Maximum Ratings table 22 Standby state test conditions, changed the equation Long Loops, Active State; KDC (V L Le79555 Data Sheet = 2 Accuracy); VAB, Open Circuit voltage in DC ...
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... Modified Longitudinal Balance graphic – Modified Two-Wire Return Loss graphic (changed CT1 from 120 pF to 180 pF) – Modified RFI graphic – Modified Le79555 test circuit graphic • Modified Application Circuit graphic • Added Note 2 to "Application Circuit" section • Updated Linecard Parts List to reflect the updated application circuit ...
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... Legerity reserves the right to discontinue or make changes to its products at any time without notice. Trademarks Legerity, the Legerity logo and combinations thereof, are trademarks of Legerity, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective companies. 24 © 2002 Legerity, Inc. All rights reserved. Le79555 Data Sheet ...
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Legerity P.O. Box 18200 Austin, Texas 78760-8200 512-228-5400 Corporate Office 512-228-5507 Fax 800-432-4009 North America Toll Free To contact the Legerity Sales Office nearest you download or order product literature, visit our web site at www.legerity.com To order ...