ISL5586 Datasheet, PDF (1/20 Pages) Intersil Corporation – Low Power Ringing SLIC for Home Gateways

TM
Data Sheet
ISL5586
June 2001
File Number 4924.1
Low Power Ringing SLIC for Home
Gateways
The ISL5586 is a very low
power Ringing Subscriber
Interface circuit designed for
use with the Broadcom*
BCM3352 Cable Modem
Chip, with on-board voiceband codecs, or other 3.3V
voiceband codec devices.
The ISL5586 provides on board ringing signal generation up
to 95V peak supporting sinusoidal or trapezoidal
waveshapes with DC offset. Loop start and ground start
trunks are supported, and an open circuit DC voltage of less
than 56V is maintained on the subscriber loop in the on-hook
condition, in compliance with MTU operation and the safety
requirements of UL-1950.
Together with the Broadcom BCM3352, the ISL5586
provides resistive and complex two wire impedance
matching and transhybrid balancing. Also supported are on-
hook transmission of caller id signals, soft and hard polarity
reversal and 12/16kHz subscriber pulse metering systems
used in Europe and Asia, thereby allowing a low cost, low
risk, global product design to be achieved.
Related Literature
• Evaluation Board for the ISL5586 family AN9918
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Block Diagram
POL CDCP CDCM
V_BL V_BH
DC
ILIM
CONTROL
BATTERY
SWITCH
TIP
RING
TL
2-WIRE
PORT
TRANSIENT
CURRENT
LIMIT
TRANSMIT
SENSING
INTERNAL
LOOP BACK
DETECTOR
LOGIC
RTD RD
DET
*Broadcom is a registered trademark of Broadcom Corp.
Features
• Interfaces to Broadcom 3352 cable modem device
• Very low on-hook power consumption
- 64mW @ Vbh = 75V
• User Programmable constant current to the subscriber
loop
• On Chip ring generation
- Balanced to 95 Vpk
• Sinewave, Trapezoid, DC offset
• Programmable loop start and ring trip detectors
• Loop start, Ground Start, Polarity Reversal (soft/hard)
• On-Hook transmission and pulse metering support
• Integrated battery switch
• Open circuit line voltage clamp
• Compatible with 3.3V devices
• TR-57 compliant Longitudinal balance
• 28 PLCC packaging
• Latch-up free Bipolar design
• Thermal protection
Applications
• Cable Modems
• Voice Over DSL (VoDSL)
• Broadband Wireless Access
• Voice Over Internet Protocol (VoIP)
• ISDN Terminal Adapters (TA)
• Small Office Home Office PBX
• Wireless Local Loop
RINGING
PORT
4-WIRE
PORT
CONTROL
LOGIC
BSEL
V_RSP
V_RSM
V_RXP
V_RXM
-IN
V_ZO
V_FB
V_TXP
V_TXM
F2
F1
F0
4-1
RSLIC18™ is a trademark of Intersil Corporation.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2001, All Rights Reserved