le9502 Zarlink Semiconductor, le9502 Datasheet

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le9502

Manufacturer Part Number
le9502
Description
Ringing Subscriber Line Interface Circuit
Manufacturer
Zarlink Semiconductor
Datasheet

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APPLICATIONS
FEATURES
RELATED LITERATURE
A
NOTE: On August 3, 2007, Zarlink Semiconductor acquired the products and
technology of Legerity Holdings.
Short/Medium Loop: approximately 2000 ft. of 26 AWG,
and 5 REN loads
Voice over IP/DSL – Integrated Access Devices, Smart
Residential Gateways, Home Gateway/Router
Cable Telephony – NIU, Set-Top Box, Home Side Box,
Cable Modem, Cable PC
Fiber–Fiber In The Loop (FITL), Fiber to the Home
(FTTH)
Wireless Local Loop, Intelligent PBX, ISDN NT1/TA
Integrated Dual-Channel Device
— Built-in boost switching power supply tracks line voltage
— Only +3.3 V and +12 V (nominal) required
— Wide range of input voltages (+8 V to +40 V) supported
— Minimal external discrete components
— 44-pin eTQFP package
Ringing
— 70 Vpk into 5REN
— 90 Vpk capable
— Sinusoidal or trapezoidal capability
— DC offset support
— Common differential interface for both channels
World Wide programmability:
— Two-wire AC impedance
— Dual Current Limit
— Loop closure and ring trip thresholds
Five SLIC States, including:
— Low power Standby state
— Reverse Polarity
081189 Le9500 RSLIC Device Data Sheet
081208 Le9501 RSLIC Device Data Sheet
080696 Le77D11 VoSLIC™ Device Data Sheet
080697 Le78D11 VoSLAC™ Device Sheet
080716 Le77D11 /Le78D11 Chip Set User’s Guide
080780 Layout Considerations for the Le77D11 and
Le9502 Devices Application Note
minimizing power dissipation
Voice Solution
Ringing Subscriber Line Interface Circuit
ORDERING INFORMATION
1.
2.
DESCRIPTION
The Legerity Le9502 Ringing Subscriber Line Interface Circuit
(RSLIC) device from the VE950 series has enhanced and
optimized features to directly address the requirements of
Voice over Broadband applications. Its goal is to reduce system
level costs, space, and power through higher levels of
integration, and to reduce the total cost of ownership by offering
better quality of service. The Le9502 RSLIC device provides a
totally configurable solution to the BORSCHT functions for two
lines. The resulting system is less complex, smaller, and
denser, yet cost effective with minimal external components.
The Le9502 RSLIC device requires only two power supplies:
+3.3 VDC and nominally +12 VDC. The latter power supply can
range from +8 VDC to +40 VDC, depending on the application.
A single TTL-level clock source drives an external transistor
which controls the ramp voltage that in turn feeds the switching
regulators. Five programmable states are available: Active,
Reverse Polarity, Ringing, Standby, and Disconnect. The DC
feed, two-wire AC input impedance, hook-switch threshold, and
ring trip threshold are programmable via external discrete
components. Binary fault detection is provided upon
application of fault conditions or thermal overload.
BLOCK DIAGRAM
Le9502BTC
Device
The green package meets RoHS Directive 2002/95/EC of the
European Council to minimize the environmental impact of
electrical equipment.
For delivery using a tape and reel packing system, add a "T" suffix
to the OPN (Ordering Part Number) when placing an order.
Device
Codec
44-pin eTQFP (Green Package)
Differential
Interface
Codec
Document ID# 081007
Rev:
Distribution:
Package
Switching Power
Switching Power
2-wire to 4-wire
2-wire to 4-wire
1
conversion
conversion
Supply
Supply
G
Public Document
VE950 Series
Le9502
Date:
Version: 3
Tray
Packing
Tip+Ring
Tip+Ring
Interface
Interface
2-wire
2-wire
Le9502
Sep 18, 2007
2
Ring
Tip
Ring
Tip

Related parts for le9502

le9502 Summary of contents

Page 1

... Voice over Broadband applications. Its goal is to reduce system level costs, space, and power through higher levels of integration, and to reduce the total cost of ownership by offering better quality of service. The Le9502 RSLIC device provides a totally configurable solution to the BORSCHT functions for two lines. The resulting system is less complex, smaller, and denser, yet cost effective with minimal external components ...

Page 2

... Test Circuit .19 Application Circuit .20 Line Card Parts List .21 Physical Dimensions .22 44-Pin eTQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Revision .23 Revision .23 Revision .23 Revision .24 Revision .24 Revision .24 Revision .24 Revision .24 2 Zarlink Semiconductor Inc. ...

Page 3

... PRODUCT DESCRIPTION The VE950 series Le9502 RSLIC device uses reliable, dielectrically isolated, fully complementary bipolar technology to implement BORSCHT functions for short loop applications. Internal power dissipation is minimized by two independent line voltage tracking, buck-boost switching regulators. Two power supplies are required: 3.3 V and a positive supply (V level clock is required to drive the switching regulator ...

Page 4

... The two-wire interface block provides DC current and sends/receives voice signals to a telephone connected via the A B (Ring) pins. The A (Tip) and B (Ring) pins are also used to send the ringing signal to the telephone. The Le9502 RSLIC device can also be programmed in Disconnect state to place the A DC Feed DC feed is controlled in the Le9502 RSLIC device ...

Page 5

... Le9502 RSLIC device is held near -4 V, while the A i regulator solution, shown in the application circuit on transistor in the switching circuit that enables the Le9502 to provide a 90 Vpk ringing signal into a lower REN load. The waveform can be either sinusoidal or trapezoidal under the control of the codec device. +V ...

Page 6

... PNP is used to limit base i pin will be able to drive approximately 100 mA of drive current to the gate of the i when selecting a power PMOS device for your application. DS(on) 6 Zarlink Semiconductor Inc. rating is 140 V. The switching efficiency CEO = that tracks Tip and Ring voltage for the 2- REG ...

Page 7

... Preferably, the external clock should be Low in startup. For a system (codec) which has a high impedance at the clock output in start up, the additional R and R resistors are recommended with values of 10 kΩ and 100 kΩ respectively. Base BG LEADING EDGE BLANKING FILTER LATCH OUTPUT SET RESET V DRIVER - + COMPARATOR internal clock square wave converter 7 Zarlink Semiconductor Inc VSW + SWi CSWi + 0. LIMi + ILS ...

Page 8

... This is the configuration used in this data sheet for defining the device and R IMT specifications. However real application, R 600 Ω input impedance. 2-Wire to 4-Wire Gain ( The 2-wire to 4-wire gain is the gain from the phone line to the VOUT output of the Le9502 RSLIC device. To solve for G − (see Figure 7). IN ...

Page 9

... The threshold for each of these functions is set by external i components. If the Le9502 RSLIC device is in Low Power Standby or Normal Active modes, the DET condition. The following equation will set the off-hook threshold: where user-chosen off-hook current threshold ...

Page 10

... Moreover, internally this block generates I Control Logic Each channel of the Le9502 RSLIC device has three input pins from a codec device (CHS, C2, and C1). The inputs set the operational state of each channel. There are five operational SLIC device states (See Table 1): Low Power Standby, Disconnect, Normal Active, Reverse Polarity, and Ringing ...

Page 11

... Exposed Pad Zarlink Semiconductor Inc. BGND 33 2 CHS 32 2 ILS VRAMP 29 VSW ILS CHS 1 24 BGND 1 23 ...

Page 12

... Differential ringing input (common to both channels). Positive supply used by the SLIC device to generate the negative Supply regulated supplies of VREG Exposed pad on underside of device must be connected to a heat Isolated spreading area. The AGND plane is recommended. 12 Zarlink Semiconductor Inc. Description LTH and CFILT . VREG (common to both channels) ...

Page 13

... Le77D112 and Le9502 RSLIC devices, document ID# 081013). Package Assembly Green package devices are assembled with enhanced environmental, compatible lead-free, halogen-free, and antimony-free materials. The leads possess a matte-tin plating which is compatible with conventional board assembly processes or newer lead- free board assembly processes. The peak soldering temperature should not exceed 245° ...

Page 14

...

Page 15

... RING Ringing --------------- - , RING Vin = 0.7Vpk 1400Ω L –0.3 200 = 100 Ω Ringing Vin = 0.7Vpk 1400Ω 7.5 15 Zarlink Semiconductor Inc. Typ Max Unit Note –4 – 54.5 –63 –69 4. –58 – +17 I +29 LTH LTH I ...

Page 16

... 0.4 SW ≥ current 72.0 1. 9.34 9.34 –9.74 3.32 –6.42 1 --------- - 520 < |100 mA Zarlink Semiconductor Inc. Typ Max Unit Note 0.28 0.31 V Ω 7000 +1 µA Ω 50 V/µsec 0 8 MΩ 180 75 µA 1 82.2 92.9 Ω ...

Page 17

... V 1 – REF = 20 kΩ ---------------------- - 0.4 –20 200 –1 –0.3 0 0.25 2.0 –100 –100 –1 17 Zarlink Semiconductor Inc. Typ Max Unit Note +0.1 +0.1 +0.1 4. +0.15 dB 4.,5. +0.35 –64 –50 –55 –40 – dBrnC 4. –78 –75 dBmP Ω +150 µ ...

Page 18

... Layout should have less than 10 pF from pin to ground internal value of typically V REF Condition Min = –25 µA I OUT = 25 µA I OUT I = –165µA OUT = 165 µA I OUT (RING) pins 600 Ω. LAC = 1.4V. REF 18 Zarlink Semiconductor Inc. Typ Max Unit 2.4 2.8 0.2 0.4 2.4 2.8 0.2 0.4 Note V V ...

Page 19

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Page 20

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Page 21

... W 84 1/16 W 0.1 Ω 1/ 1/16 W 536 k 1% 1/16 W SLIC Le9502 - - - - - TISP61089 -170V 30A 21 Zarlink Semiconductor Inc. Comments Panasonic / ECJ-1VB1C104K, 0603 Panasonic / ECJ-1VB1C273K, 0603 CalChip / GMB31X7R104K200NT, 1206 Panasonic / ECJ-1VC1H100D, 0603 Panasonic / ECJ-1VC1H102J, 0603 Panasonic / ECJ-2YB0J155K, 0805 Panasonic / ECS-T0JY475R, 1206 Panasonic / ECJ-1VC1H471J, 0603 ...

Page 22

... PHYSICAL DIMENSIONS 44-Pin eTQFP Note: Packages may have mold tooling markings on the surface. These markings have no impact on the form, fit or function of the device. Markings will vary with the mold tool used in manufacturing. 22 Zarlink Semiconductor Inc. ...

Page 23

... IH accuracy and added note 4. LTH =600 Ω case. L nominal value to reflect typical value Ω case " minimum, typical, and maximum specifications. Float_Leakage . Float_Leakage on page 1 23 Zarlink Semiconductor Inc 17.0mA). LTH ...

Page 24

... This required increase in ’Condition’ table size and squeezing the ’Note’ column -85V" in the ’Condition’ column. REG and Ringing distortion. Changed note 8 references to note 7 ( REG the following changes were made: L 15, the following changes were made page 22. 24 Zarlink Semiconductor Inc. =300Ω. ...

Page 25

... 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. ...

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