le79r241 Zarlink Semiconductor, le79r241 Datasheet
le79r241
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le79r241 Summary of contents
Page 1
... All AC, DC, and signaling parameters are fully programmable via microprocessor or GCI interfaces on the VE790 series ISLAC device. Additionally, the Le79R241 ISLIC device has integrated self-test and line-test capabilities to resolve faults to the line or line circuit. The integrated test capability is crucial for remote applications where dedicated test hardware is not cost effective ...
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... TABLE OF CONTENTS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Ordering Information Description Related Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Le79R241 ISLIC™ Device Internal Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Features of the VE790 series Chip set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Chip set Block Diagram - Four Channel Line card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Thermal Resistance ...
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... This enables it to have full control over the subscriber loop. The Le79R241 ISLIC device is designed to be used exclusively with the VE790 series ISLAC devices. The Le79R241 ISLIC device requires only +5 V power and the battery supplies for its operation. ...
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... Le79R241 ISLIC device functions with programmable parameters. System-level parameters under programmable control include active loop current limits, feed resistance, and feed mode voltages. The VE790 series ISLAC devices supply complete mode control to the Le79R241 ISLIC device using the control bus (P1-P3) and tri-level load signal (LD ) ...
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... LE79R241 ISLIC™ DEVICE INTERNAL BLOCK DIAGRAM IA sense 600 SA Fault Meas. HPA TMS BGND HPB Fault Meas sense BD IB 600 TMN Thermal Management Control TMP VBH High Neg. Bat. sel. VBL R3 RYE R2 R1 Power amplifiers positive supply BGND A Amplifier ...
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... Line and ringer capacitance – Loop resistance • Integrated self-test features – Echo gain, distortion, and noise • Guaranteed performance over commercial and industrial temperature ranges. • three relay drivers per Le79R241 ISLIC device – Configurable as test load switches 6 Zarlink Semiconductor Inc. ...
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... CHIP SET BLOCK DIAGRAM - FOUR CHANNEL LINE CARD Networks and A3 Protection Le79R241 7 Le79R241 AGND1 AGND2 7 Le79R241 3 7 Le79R241 BATH BATL 7 Zarlink Semiconductor Inc. 4 VCCA LD1 VCCD DGND1 VREF DGND2 4 IO(1-4) LD2 TSCA/G TSCB DRA/DD LD3 DRB Le79Q224x P1-P3 DXB ...
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... Figure 2. Le79R241DJC RYE TMS 9 32-Pin PLCC TMP 10 TMN Figure 3. Le79R241FQC RYE 32-Pin QFN TMS 5 TMP 6 TMN Exposed Pad Zarlink Semiconductor Inc. ...
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... VBH. Positive supply for low voltage analog and digital circuits in the Le79R241 ISLIC device. Sets the DC longitudinal voltage of the Le79R241 ISLIC device the reference for the longitudinal control loop. When the VLB pin is greater than VREF, the Le79R241 ISLIC device sets the longitudinal voltage to a voltage approximately half-way between the positive and negative power supply battery rails ...
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... Rise time of VBH (dv/dt) must be limited to less than 27 v/ms. Thermal Resistance The junction to air thermal resistance of the Le79R241 ISLIC device in a 32-pin PLCC package is 45° C/W and in a 32-pin QFN package is 25° C/W (measured under free air convection conditions and without external heat sinking). ...
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... Test Conditions On-Hook Disconnect On-Hook Standby On-Hook TransmissionLe79R241 ISLIC device Fixed Longitudinal Voltage On-Hook Active High Battery Le79R241 ISLIC device Off-Hook Active Low Battery Le79R241 ISLIC device RL = 294 Ω On-Hook Disconnect On-Hook Standby On-Hook Transmission ...
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... BATL = –36 V, RRX = 150 kΩ 600 Ω, RSA = RSB = 200 kΩ, RFA = RFB = 50 Ω, CHP = 22 nF, CAD = CBD = 22 nF, IRSN = 50 µA, Active low battery. DC-feed conditions are normally set by the 790 series codec. When the Le79R241 ISLIC device is tested by itself, its operating conditions must be simulated were connected to an ideal 790 series codec. ...
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... R2,R3 Off Leakage Zener Break Over Zener On Voltage R2 Condition Min 25 mA/relay sink 40 mA/relay sink R2,R3 = BGND RYE = VBH Iz = 100 µA 6 Figure 4. Relay Drivers RYE A. Relay Driver Configuration R1 BGND B. Ring Relay 13 Zarlink Semiconductor Inc. Typ Max Unit Note 0.4 0 0.8 1.0 0 100 µA 7 ...
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... 3400 kHz 50 to 3400 kHz Active mode 20 Freq = 12 kHz 2.8 Vrms Freq = 16 kHz 40 metering load = 200 Ω 14 Zarlink Semiconductor Inc. Typ Max Unit Note 1 2. Ω Ω 70 135 –13.98 –13.83 – ...
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... The Le79R241 ISLIC device receives multiplexed control data on the P1, P2 and P3 pins. The LD pin then controls the loading of P1, P2, and P3 values into the proper bits in the Le79R241 ISLIC device control register. When the LD pin is less than 0.3 V below VREF (< (VREF – 0.3 V)), P1–P3 must contain data for relay control bits RD1, RD2 and RD3. These are latched into the first three bits in the Le79R241 ISLIC device control register. When the LD pin is more than 0.3 V above VREF, P1– ...
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... This mode disconnects both A and B output amplifiers from the AD and BD outputs. The A and B amplifiers are shut down and the Le79R241 ISLIC device selects the low battery voltage at the VBL pin. In the Disconnect state, the currents on IMT and ILG represent the voltages on the SA and SB pins, respectively. These currents ...
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... After a power-on reset or hardware reset, the relay outputs from the Le79R241 ISLIC device turn all relays off. An unassuming state is to place the relay control pins, which are level triggered reset state for all relays. Any noise encountered only raises the levels toward the register lock state ...
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... Relay Data P1,P2,P3 VREF LD VREF t P1,P2,P3 187.5 µ State Data Relay Data DETAIL A tr SLD t SLDPW SDXSU t SDXD 18 Zarlink Semiconductor Inc. S Write State Register Lock Registers Write Relay Register New State Data Write State Register tf SLD Write Relay Register t SDXHD Relay driver response R ...
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... DLHi BATL CBATLi CBATPi BATP Figure 5. Internal Ringing Line Schematic +5V 3.3V VCC CREF RRXi SA RSN AD CHLbi RHLci RTi CADi VSAB CHPi HPA VTX HPB U1 Le79R241 or Le79R251 BD VLB IMT SB CBDi TMS RMTi VREF ILG TMP RLGi TMN VREF VREF VBH VBL LD GND ...
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... LINE CARD PARTS LIST- INTERNAL RINGING The following list defines the parts and part values required to meet target specification limits for channel i of the line card (i = 1,2,3,4). Item Le79R241 ISLIC U1 device VE790 series ISLAC U2 device U3, U4, U5, U6 B1100CC DT1 , DT2 Diode ...
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... CBATLi RGFDi KRi +5 V Ring Bus +5 V 3.3 V VCC CREF RRXi SA RSN RHLai CHLbi AD CADi RHLci VREF RTi VSAB CHPi HPA VTX U1 Le79231, Le79R241 HPB or Le79R251 VLB CBDi BD IMT RMTi SB TMS VREF ILG RLGi TMP VREF TMN VREF LD VBH GND P1 VBL P2 P3 ...
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... LINE CARD PARTS LIST - EXTERNAL RINGING The following list defines the parts and part values required to meet target specification limits for channel i of the line card ( 4). Item U1 Le79R241 ISLIC device VE790 series ISLAC U2 device U5 TISP61089 1 2 DLH , DT1 ...
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... Exact shape of this feature is optional. 0.550 0.553 0.255 REF 5 Details of pin 1 identifier are optional but must be located -- 10 deg within the zone indicated. 6 Sum of DAM bar protrusions to be 0.007 max per lead. 7 Controlling dimension : Inch. 8 Reference document : JEDEC MS-016 32-Pin PLCC 23 Zarlink Semiconductor Inc. ...
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... The Terminal #1 identifier may be either a mold or marked feature. 5.90 5. Coplanarity applies to the exposed pad as well as the terminals. 6. Reference Document: JEDEC MO-220. 0.63 7. Lead width deviates from the JEDEC MO-220 standard. 0.05 32-Pin QFN 24 Zarlink Semiconductor Inc degrees. ...
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... Added QFN package data to “Connection Diagram,” “Absolute Maximum Ratings,” and “Physical Dimensions.” • Updated "Am" OPNs (Ordering Part Numbers) to "Le" throughout document • In "Ordering Information" the following changes were made: – Added entries for Le79R241JC and Le79R241QC – Removed the chip graphic – Added notes • ...
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... Added new headers/footers due to Zarlink purchase of Legerity on August 3, 2007 > 5 mA, deleted the last sentence in the Description section L Application Circuits, on page 19 Ordering Information, on page and I /I LOOP MT LONG LG Physical Dimensions, on page 23 26 Zarlink Semiconductor Inc. for min. typ and max. ...
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... I C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo are trademarks, and Legerity, the Legerity logo and combinations thereof are registered trademarks of Zarlink Semiconductor Inc. All other trademarks and registered trademarks are the property of their respective owners. © 2007 Zarlink Semiconductor Inc. All Rights Reserved. ...