ISL5585FCRZ Intersil, ISL5585FCRZ Datasheet

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ISL5585FCRZ

Manufacturer Part Number
ISL5585FCRZ
Description
SLIC 1-CH 53dB 45mA 3.3V/-18V/-24V/-28V 32-Pin QFN EP
Manufacturer
Intersil
Datasheet

Specifications of ISL5585FCRZ

Package
32QFN EP
Number Of Channels Per Chip
1
Polarity Reversal
Yes
Longitudinal Balanced
53(Min) dB
Loop Current
45 mA
Minimum Operating Supply Voltage
2.97|-16 V
Typical Operating Supply Voltage
3.3|-18|-24|-28 V
Typical Supply Current
9.3 mA
RING
SW+
ILIM
SW-
TIP
TL
3.3V Ringing SLIC Family for Voice Over
Broadband (VOB)
The 3.3V family of ringing subscriber line interface circuits
(SLIC) supports analog Plain Old Telephone Service (POTS)
in short and medium loop length, wireless and wireline voice
over broadband applications. Ideally suited for customer
premise equipment, this family of products offers flexibility to
designers with high ringing voltage and low power
consumption system requirements.
The ISL5585 family is capable of operating with 100V ringing
battery supply, which translates directly to the amount of
ringing voltage supplied to the subscriber. With the high
operating voltage, subscriber loop lengths can be extended
to 500Ω (i.e., 5,000 feet) and beyond, allowing this family to
serve emerging Fiber In The Loop (FITL) markets.
Other key features across the product family include: 3.3V
V
sinusoidal or trapezoidal waveforms, robust auto-detection
mechanisms for when subscribers go on or off hook, and
minimal external discrete application components.
Integrated test access features are also offered on selected
products to support loopback testing as well as line
measurement tests.
There are ten product offerings of the ISL5585 providing
various grades of ringing battery voltage and longitudinal
balance.
Block Diagram
CC
POL
operation, low power consumption, ringing using
TRANSIENT
CONTROL
CURRENT
ACCESS
2-WIRE
PORT
LIMIT
TEST
DC
CDC
RT
SH E0
DETECTOR
VBL
TRANSMIT
SENSING
®
BATTERY
LOGIC
SWITCH
1
VBH
DET ALM
Data Sheet
BSEL SWC
CONTROL
RINGING
4-WIRE
LOGIC
PORT
PORT
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
VRS
AUX
VTX
-IN
VFB
F2
F1
F0
Features
• 3.3V Operation
• Onboard Ringing Generation
• Low Standby Power Consumption (75V, 65mW)
• Programmable Transient Current Limit
• Improved Off Hook Software Interface
• Integrated MTU DC Characteristics
• Low External Component Count
• Silent Polarity Reversal
• Pulse Metering and On Hook Transmission
• Tip Open Ground Start Operation
• Balanced and Unbalanced Ringing
• Thermal Shutdown with Alarm Indicator
• 28 Lead Surface Mount Packaging
• QFN Package:
• Pb-Free Available (RoHS Compliant)
Applications
• Short Loop Access Platforms
• Voice Over Internet Protocol (VoIP)
• Voice Over Cable and DSL Modems
• Internet Protocol PBX
• FiberTo The Home (FTTH)
• Remote Subscriber Units
• Ethernet Terminal Adapters
Related Literature
• AN1038, User’s Guide for Development Board
• AN9824, Modeling of the AC Loop
• TB379 Thermal Characterization of Packages for ICs
• AN9922, Thermal Characterization and Modeling of the
- Compliant to JEDEC PUB95 MO-220
- Near Chip Scale Package footprint, which improves
RSLIC18 in the Micro Leadframe Package
QFN - Quad Flat No Leads - Package Outline
PCB efficiency and has a thinner profile
October 21, 2004
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002-2004. All Rights Reserved.
ISL5585
FN6026.6

Related parts for ISL5585FCRZ

ISL5585FCRZ Summary of contents

Page 1

... RSLIC18 in the Micro Leadframe Package CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 321-724-7143 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. ISL5585 FN6026.6 Copyright Intersil Americas Inc. 2002-2004. All Rights Reserved. ...

Page 2

... ISL5585DIM • ISL5585DIMZ (See Note) ISL5585ECM ISL5585ECMZ (See Note) ISL5585ECR ISL5585ECRZ (See Note) ISL5585FCM ISL5585FCMZ (See Note) ISL5585FCR ISL5585FCRZ (See Note) • ISL5585GCM • ISL5585GCMZ (See Note) • ISL5585GCR • ISL5585GCRZ (See Note) ISL5585 XXX Evaluation board platform, including CODEC. Also available in Tape and Reel *Reference “ ...

Page 3

Device Operating Modes MODE Low Power Standby Forward Active Unbalanced Ringing Reverse Active Ringing Forward Loop Back Tip Open ...

Page 4

Pin Description (Continued) PLCC QFN SYMBOL Mode control input Detector Output Selection Input. This TTL input controls the multiplexing of the SHD ( and GKD ( comparator outputs to the ...

Page 5

Absolute Maximum Ratings T = 25°C A Maximum Supply Voltages ...

Page 6

Electrical Specifications Unless Otherwise Specified, T grade transmission parameters are specified at 600W 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection resistors = 0W. (Continued) PARAMETER 2-Wire Return Loss 2-Wire Longitudinal Balance (Notes 5, ...

Page 7

Electrical Specifications Unless Otherwise Specified, T grade transmission parameters are specified at 600W 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection resistors = 0W. (Continued) PARAMETER LOOP DETECTORS AND SUPERVISORY FUNCTIONS Switch Hook Programming ...

Page 8

Electrical Specifications Unless Otherwise Specified, T grade transmission parameters are specified at 600W 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection resistors = 0W. (Continued) PARAMETER Power Denial, BSEL HOOK POWER ...

Page 9

Design Equations Switch Hook Detect The switch hook detect threshold is set by a single external resistor Equation 1 is used to calculate the value ⁄ 600 The term I ...

Page 10

To allow for proper ring trip operation, the transient current limit setting should be set at least 25% higher than the peak ring trip current setting. Setting ...

Page 11

... V (EQ. 13 (EQ. 14) 2-Wire Impedance Matching Z is the source impedance of the device and is defined as ∆ (EQ. 15 20Ω the line impedance and R L resistor. R (EQ. 16 INTERSIL X + ISL5585 - R RECEIVE BLOCK SENSE 1:1 + 20Ω I FEED AMPLIFIER FEED AMPLIFIER R SENSE 20Ω ...

Page 12

... protection resistor (typical 49.9Ω). external resistor/network for matching the line S impedance. (EQ. 22 The tip to ring voltage at the output pins of the SLIC The tip to ring voltage including the voltage across the 2W protection resistors. (EQ. 23 The line impedance The source impedance of the device. ...

Page 13

... Substituting and rearranging Equation terms of E results in Equation 40 Substituting Equation 40 into Equation 38 results in an equation for 2-wire to 4-wire gain that’s a function of the synthesized input impedance of the SLIC and the protection resistors.   ----------- - =  ------------------------------------------- -  – = 0.416 ( ) 2-4 V  ...

Page 14

... R P RING - FIGURE 7. 2-WIRE TO 4-WIRE SIGNAL PHASE ACROSS THE ISL5585 14 ISL5585 I INTERSIL X + ISL5585 R I RECEIVE BLOCK 1:1 + FEED R AMPLIFIER FEED AMPLIFIER + - ∆ SENSE AMPLIFIER I INTERSIL X + ISL5585 - R I RECEIVE BLOCK X SENSE 1:1 + 20Ω FEED AMPLIFIER FEED AMPLIFIER SENSE 20Ω ∆ SENSE AMPLIFIER ...

Page 15

Low Power Standby Overview The low power standby mode (LPS, 000) should be used during idle line conditions. The device is designed to operate from the high battery during this mode. Most of the internal circuitry is powered down, resulting ...

Page 16

Most applications do not specify charging current requirements during standby. When specified, the typical charging current may be as high as 5mA. Forward Active Overview The forward active mode (FA, 001) is the primary AC transmission mode of the device. ...

Page 17

If the loop length is greater than R KNEE operating in the constant voltage, resistive feed region. The power dissipated in this region is calculated using Equation 53 – ...

Page 18

When the input signal at VRS is zero, the Tip and Ring amplifier outputs are centered at half battery. The device provides auto centering for easy implementation of sinusoidal ringing waveforms. Both AC and DC control of the Tip and ...

Page 19

When the forward loop back mode is initiated internal switches connect a 600Ω load across the outputs of the Tip and Ring amplifiers. TIP 600Ω RING FIGURE 13. FORWARD LOOP BACK INTERNAL TERMINATION 19 ISL5585 DC Verification When the internal ...

Page 20

Power Denial Overview The power denial mode (111) will shutdown the entire device except for the logic interface. Loop supervision is not provided. This mode may be used as a sleep mode or to shut down in the presence of ...

Page 21

... Tip and Ring are reversed for half of the ringing cycle. With independent logic control and the blocking diode, the uncommitted switch may be continuously connected to the Tip and Ring terminals. 21 ISL5585 TABLE 2. ISL5585 3V APPLICATION CIRCUIT COMPONENTS COMPONENT U1 - Ringing SLIC ...

Page 22

C PS1 C PS2 C PS3 R P1 VCC VBL VBH 49.9Ω AUX TIP + 600Ω VTX - 49.9Ω RING C RT -IN ISL5585 VFB CDC R IL ...

Page 23

... The pin #1 identifier may be either a mold or mark feature. improved electrical and thermal performance. Pattern Design efforts, see Intersil Technical Brief TB389. when Anvil singulation method is used and not present for saw singulation. package, a maximum 0.15mm pull back (L1) maybe present. L minus equal to or greater than 0 ...

Page 24

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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