LE7920-2DJCT

LE7920-2DJCT Datasheet

The Le7920 Subscriber Line Interface Circuit implements the basic telephone line interface functions, and enables the

Part	Datasheet
LE7920-2DJCT	LE7920-2DJCT (pdf)

Related Parts	Information
LE7920-1DJC	LE7920-1DJC
LE7920-2DJC	LE7920-2DJC
LE7920-1DJCT	LE7920-1DJCT

PDF Datasheet Preview
The Le7920 Subscriber Line Interface Circuit implements the basic telephone line interface functions, and enables the DISTINCTIVE CHARACTERISTICS - Control states Active, Ringing, Standby, and Disconnect - Low standby power 35 mW - V to V battery operation - On-hook transmission - Two-wire impedance set by single external impedance - Programmable constant-current feed BLOCK DIAGRAM A TIP HPA HPB Two-Wire Interface Le7920 Subscriber Line Interface Circuit VE580 Series design of low cost, high performance, POTS line interface cards. - Programmable loop-detect threshold - Programmable ring-trip detect threshold - No V supply required - Current Gain = 500 - On-chip Thermal Management TMG feature - Four on-chip relay drivers and relay snubbers, 1 ringing and 3 general purpose 32 PLCC Relay Driver Relay Driver Relay Driver Ring Relay Driver Input Decoder and Control RYOUT3 RYOUT2 RYOUT1 RINGOUT D1 D2 D3 C1 C2 B RING DA DB VBAT BGND Signal Transmission Off-Hook Detector Power-Feed Controller Ring-Trip Detector VTX RSN RD RDC CAS VCC VBREF AGND/DGND Document ID# 080146 Date Sep 19, 2007 Version 2 Distribution Public Document Le7920 Data Sheet TABLE OF CONTENTS Ordering Information. Standard Products Connection Diagram Top View Pin Descriptions Absolute Maximum Ratings Operating Ranges Electrical Characteristics Electrical Characteristics continued Electrical Characteristics continued Relay Driver Schematics. DC Feed Characteristics Test Circuits. Test Circuits continued Test Circuits continued Physical Dimensions. Zarlink Semiconductor Inc. Le7920 Data Sheet ORDERING INFORMATION Standard Products Zarlink standard products are available in several packages and operating ranges. The order number Valid Combination is formed by a combination of the elements below. Le7920 C = Commercial 0°C to 70°C * DEVICE NUMBER/DESCRIPTION Le7920 Subscriber Line Interface Circuit PLCC package PACKAGING MATERIAL Blank= Standard package D= Green package see note PERFORMANCE GRADE Blank = Standard specification = 53 dB Longitudinal Balance = 63 dB Longitudinal Balance Note Green package meets RoHS Directive 2002/95/EC of the European Council to minimize the environmental impact of electrical equipment. Valid Combinations Le7920* Valid Combinations Valid Combinations list configurations planned to be supported in volume for this device. Consult the local Zarlink sales office to confirm availability of specific valid combinations, to check on newly released combinations, and to obtain additional data on Zarlink’s standard products. *Zarlink reserves the right to fulfill all orders for this device with parts marked with the "Am" part number prefix, until such time as all inventory bearing this mark has been depleted. It should be noted that parts marked with either the "Am" or the "Le" part number prefix are equivalent devices in terms of form, fit, and function. The only difference between the two is in the part number prefix appearing on the topside mark. Zarlink Semiconductor Inc. CONNECTION DIAGRAM Top View Le7920 Data Sheet RYOUT1 RINGOUT VCC BGND B RING A TIP DB RYOUT2 RYOUT3 TMG VBAT D2 D1 NC DET 4 3 2 1 32 31 30 32-Pin PLCC 14 15 16 17 18 19 20 DA RD HPB HPA NC VTX VBREF RSN AGND D3 C2 C1 CAS NC RDC Notes Pin 1 is marked for orientation. NC = No Connect Zarlink Semiconductor Inc. PIN DESCRIPTIONS Pin Name AGND/DGND A TIP BGND B RING Type Ground Output Ground Output Inputs Capacitor DA DB HPA HPB NC RD RDC RINGOUT • Added the 28-pin SOIC connection diagram and the SC option to the ordering information. • The physical dimension PL032 was added to the Physical Dimension section. • Deleted the plastic DIP package and references to it. • Updated the Pin Description table to correct inconsistencies. • Updated device name from "Am7920" to "Le7920" throughout document. • Absolute Maximum Ratings Notes updated to standard. • Operating Ranges Temperature statement updated to standard. • Updated "Sales Office Listing." • Updated physical dimension drawings. • Added green package OPN to Ordering Information, on page 3 • Added Package Assembly, on page 7 • Updated 32-pin PLCC drawing in Physical Dimensions, on page 17 • Removed SOIC package information • Enhanced format of package drawing in Physical Dimensions, on page 17 • Added new headers/footers due to Zarlink purchase of Legerity on August 3, 2007 Data Sheet Zarlink Semiconductor Inc. For more information about all Zarlink products visit our Web Site at Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries collectively “Zarlink” is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink. This publication is issued to provide information only and unless agreed by Zarlink in writing may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user’s responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink’s conditions of sale which are available on request. Purchase of Zarlink’s I2C components conveys a license under the Philips I2C Patent rights to use these components in an I2C System, provided that the system conforms to the I2C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo and the Legerity logo and combinations thereof, VoiceEdge, VoicePort, SLAC, ISLIC, ISLAC and VoicePath are trademarks of Zarlink Semiconductor Inc. TECHNICAL DOCUMENTATION - NOT FOR RESALE

PDF Datasheet Preview

The Le7920 Subscriber Line Interface Circuit implements the basic telephone line interface functions, and enables the

DISTINCTIVE CHARACTERISTICS
- Control states Active, Ringing, Standby, and Disconnect
- Low standby power 35 mW - V to V battery operation - On-hook transmission - Two-wire impedance set by single external
impedance - Programmable constant-current feed

BLOCK DIAGRAM

A TIP HPA HPB

Two-Wire Interface

Le7920

Subscriber Line Interface Circuit VE580 Series
design of low cost, high performance, POTS line interface cards.
- Programmable loop-detect threshold - Programmable ring-trip detect threshold - No V supply required - Current Gain = 500 - On-chip Thermal Management TMG feature - Four on-chip relay drivers and relay snubbers, 1
ringing and 3 general purpose 32 PLCC

Relay Driver Relay Driver Relay Driver Ring Relay Driver

Input Decoder and Control

RYOUT3

RYOUT2

RYOUT1

RINGOUT

D1 D2 D3 C1 C2

B RING

DA DB VBAT BGND

Signal Transmission Off-Hook Detector

Power-Feed Controller

Ring-Trip Detector

VTX RSN

RD RDC CAS

VCC VBREF AGND/DGND

Document ID# 080146 Date Sep 19, 2007

Version 2

Distribution Public Document

Le7920

Data Sheet

TABLE OF CONTENTS
Ordering Information. Standard Products

Connection Diagram Top View

Pin Descriptions Absolute Maximum Ratings Operating Ranges Electrical Characteristics Electrical Characteristics continued Electrical Characteristics continued Relay Driver Schematics. DC Feed Characteristics Test Circuits. Test Circuits continued Test Circuits continued Physical Dimensions.

Zarlink Semiconductor Inc.

Le7920

Data Sheet
ORDERING INFORMATION

Standard Products

Zarlink standard products are available in several packages and operating ranges. The order number Valid Combination is formed by a combination of the elements below.

Le7920

C = Commercial 0°C to 70°C *

DEVICE NUMBER/DESCRIPTION Le7920

Subscriber Line Interface Circuit

PLCC package

PACKAGING MATERIAL Blank= Standard package

D= Green package see note

PERFORMANCE GRADE Blank = Standard specification
= 53 dB Longitudinal Balance = 63 dB Longitudinal Balance

Note Green package meets RoHS Directive 2002/95/EC of the European Council to minimize the environmental impact of electrical equipment.

Valid Combinations

Le7920*

Valid Combinations

Valid Combinations list configurations planned to be supported in volume for this device. Consult the local Zarlink sales office to confirm availability of specific valid combinations, to check on newly released combinations, and to obtain additional data on Zarlink’s standard products.
*Zarlink reserves the right to fulfill all orders for this device with parts marked with the "Am" part number prefix, until such time as all inventory bearing this mark has been depleted. It should be noted that parts marked with either the "Am" or the "Le" part number prefix are equivalent devices in terms of form, fit, and function. The only difference between the two is in the part number prefix appearing on the topside mark.

Zarlink Semiconductor Inc.

CONNECTION DIAGRAM Top View

Le7920

Data Sheet

RYOUT1 RINGOUT VCC BGND B RING A TIP DB

RYOUT2 RYOUT3

TMG VBAT

D2 D1 NC DET
4 3 2 1 32 31 30
32-Pin

PLCC
14 15 16 17 18 19 20

DA RD HPB HPA NC VTX VBREF RSN AGND

D3 C2 C1 CAS NC RDC

Notes Pin 1 is marked for orientation.

NC = No Connect

Zarlink Semiconductor Inc.

PIN DESCRIPTIONS

Pin Name AGND/DGND A TIP BGND B RING

Type Ground Output Ground Output Inputs

Capacitor

DA DB

HPA HPB NC RD RDC RINGOUT
• Added the 28-pin SOIC connection diagram and the SC option to the ordering information.
• The physical dimension PL032 was added to the Physical Dimension section.
• Deleted the plastic DIP package and references to it.
• Updated the Pin Description table to correct inconsistencies.
• Updated device name from "Am7920" to "Le7920" throughout document.
• Absolute Maximum Ratings Notes updated to standard.
• Operating Ranges Temperature statement updated to standard.
• Updated "Sales Office Listing."
• Updated physical dimension drawings.
• Added green package OPN to Ordering Information, on page 3
• Added Package Assembly, on page 7
• Updated 32-pin PLCC drawing in Physical Dimensions, on page 17
• Removed SOIC package information
• Enhanced format of package drawing in Physical Dimensions, on page 17
• Added new headers/footers due to Zarlink purchase of Legerity on August 3, 2007

Data Sheet

Zarlink Semiconductor Inc.

For more information about all Zarlink products visit our Web Site at

Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries collectively “Zarlink” is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink.

This publication is issued to provide information only and unless agreed by Zarlink in writing may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user’s responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink’s conditions of sale which are available on request.

Purchase of Zarlink’s I2C components conveys a license under the Philips I2C Patent rights to use these components in an I2C System, provided that the system conforms to the I2C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo and the Legerity logo and combinations thereof, VoiceEdge, VoicePort, SLAC, ISLIC, ISLAC and VoicePath are trademarks of Zarlink Semiconductor Inc.

TECHNICAL DOCUMENTATION - NOT FOR RESALE

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived LE7920-2DJCT Datasheet file may be downloaded here without warranties.

Datasheet ID: LE7920-2DJCT 648984