|Category||Communication => Telephony => Voice over IP|
|Description||Low Power Ringing Slic For Home Gateways|
|Datasheet||Download ISL5586 datasheet
The 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 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 onhook 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.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 protectionApplications
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
Evaluation Board for the ISL5586 family AN9918 Technical Brief TB363 "Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)"2-WIRE PORT TRANSIENT CURRENT LIMIT TRANSMIT SENSING 4-WIRE PORT
is a trademark of Intersil Corporation. CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2001, All Rights Reserved
HIGH BATTERY (VBH) PART NUMBER 85V 75V LONGITUDINAL BALANCE 58dB 53dB TEMP. RANGE to 85 PACKAGE 28 Ld PLCC 28 Ld PLCC 28 Ld PLCC 28 Ld PLCC PACKAGE NO. N28.45
MODE Low Power Standby (LPS) Forward Active (FA) Unused Reverse Active (RA) Ringing Forward Loop Back (FLB) F1 F0 DET SHD n/a SHD RTD SHD n/a DESCRIPTION MTU compliant on hook operating mode. MTU compliant and OHT capable on hook mode, off hook loop feed mode. Reserved for internal purposes. Signalling mode which reverses direction of loop current, otherwise like Forward Active. Signalling mode used to generate high voltage balanced ringing signal. Internal loop back mode which connects internal load across Tip and Ring terminals. Signalling mode sets Tip to high impedance state, Ring output still active. Loop disconnect mode which forces both Tip and Ring to high impedance.Tip Open/Ground Start (TO) 1 Power Denial (PD) 1
Maximum Supply Voltages VCC. to +7V VCC - VBAT. 110V ESD (Human Body Model). 500V Maximum Tip/Ring Negative Voltage Pulse (Note 7).VBH-15V Maximum Tip/Ring Positive Voltage Pulse (Note + 8V
Thermal Resistance (Typical, Note 1) JA (oC/W) PLCC Package. 53 Maximum Junction Temperature Plastic.150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC (PLCC - Lead Tips Only)
Temperature Range Industrial. to 85oC Positive Power Supply (VCC).+5V Negative Power Supply (VBH, VBL). to -24V
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE: JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Electrical Specifications Unless Otherwise Specified, to 85oC, VBL = -24V, VBH = -100V, VCC = +5V, AGND = BGND = 0V, loop current limit = 25mA. All AC Parameters are specified 600, 2-wire terminating impedance over the frequency band to 3.4kHz. Protection resistors = 0. These parameters apply generically to each product offering. TEST CONDITIONS MIN 35 10 VRS to 2-Wire, RLOAD = 5 REN 1.3 k, VT-R = |VBH| -5 Forward Active Mode, Referenced to VRS Input. Ringing Mode Referenced to the Differential Ringing Amplitude. Tip, Referenced + 0.5V Ring, Referenced 0.5V AC TRANSMISSION PARAMETERS Receive Input Impedance, VRXP (Note 2) Receive input Impedance, VRXM (Note 2) Transmit Output Impedance (Note 2) Transmit Output Drive Capability (Note 2) 4-Wire Port Overload Level 2-Wire Port Overload Level 2-Wire Return Loss (Note 2) Longitudinal Current Capability per Wire (Note 2) 2-Wire Longitudinal Balance (ON-Hook and OFF-Hook) (Notes 5) 4-Wire Longitudinal Balance (ON-Hook and OFF-Hook) (Notes to 2-Wire Insertion Loss to 4-Wire Insertion Loss to 4-Wire Insertion Loss DC Current Capacitance to Ground THD = 1% THD f 3.4kHz False Detect False Detect in Low Power Standby mA pF VPEAK dB mA RMS mARMS dB -3.0 TYP MAX 5 3.0 UNITS M V/V dB V
PARAMETER RINGING PARAMETERS VRSP Input Impedance (Note 2) VRSM input impedance (Note 2) Differential Ringing Gain (Note 3) Ringing voltage Total Distortion to 2-Wire Ringing Off Isolation to 4-Wire Transmit Isolation Centering Voltage Accuracy
Frequency Response, On Hook, 4-Wire, 4-Wire Referenced f 2800Hz Frequency Response, Off Hook to 4-Wire Referenced 400Hz, 2800Hz
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