CPC5620/CPC5621 LITELINK III Phone Line Interface IC (DAA) INTEGRATED CIRCUITS DIVISION Features Description Superior voice solution with low noise, excellent LITELINK III is a single-package silicon phone line part-to-part gain accuracy interface (PLI) DAA used in voice and data line isolation 3 kV communication applications to make connections rms between low-voltage equipment and high-voltage Transmit power of up to +10 dBm into 600 telephone networks. Data access arrangement (DAA) solution for modems at speeds up to V.92 LITELINK provides a high-voltage isolation barrier, AC 3.3 or 5 V power supply operation and DC phone line terminations, switch hook, 2-wire to Caller ID signal reception function 4-wire hybrid, ring detection, and on-hook signal Easy interface with modem ICs and voice CODECs detection. LITELINK can be used in both differential Worldwide dial-up telephone network compatibility and single-ended signal applications. CPC5620 and CPC5621 can be used in circuits that LITELINK uses on-chip optical components and a few comply with the requirements of TIA/EIA/IS-968 inexpensive external components to form a complete (FCC part 68), UL1950, UL60950, EN/IEC 60950-1 voice or high-speed data phone line interface. Supplementary Isolation compliant, EN55022B, LITELINK eliminates the need for large isolation CISPR22B, EN55024, and TBR-21 transformers or capacitors used in other interface Line-side circuit powered from telephone line configurations. It includes the required high-voltage Compared to other silicon DAA solutions, LITELINK: isolation barrier in a surface-mount SOIC package. - Uses fewer passive components - Takes up less printed-circuit board space The CPC5620 (half-wave ringing detect) and - Uses less telephone line power CPC5621 (full-wave ringing detect) build upon IXYS - Offers simplified operation Integrated Circuits Divisions LITELINK product line, - Is a single-IC solution with improved insertion loss control, improved noise performance, and lower minimum current draw from Applications the phone line. The new mode pin enables worldwide Computer telephony and gateways, such as VoIP implementation. PBXs Satellite and cable set-top boxes Ordering Information V.92 (and other standard) modems Part Number Description Fax machines Voicemail systems CPC5620A 32-pin SOIC, half-wave ring detect, 50/Tube Embedded modems for POS terminals, automated CPC5620ATR 32-pin SOIC, half-wave ring detect, 1000/Reel banking, remote metering, vending machines, CPC5621A 32-pin SOIC, full-wave ring detect, 50/Tube security, and surveillance CPC5621ATR 32-pin SOIC, full-wave ring detect, 1000/Reel CPC5620/CPC5621 Block Diagram TIP+ Isolation Barrier Transmit Isolation Amplifier Tx+ Transmit VI Slope Control Transconductance Diff. Stage Amplifier 2-4 Wire Hybrid AC Impedance Control Tx- AC/DC Termination Hookswitch Current Limit Control MODE OH Vref RING Gain Trim RING- CID Vref Gain Trim Receive Isolation Amplifier Rx+ Receive CID/ Diff. RING Rx- Amplifier MUX C R SNOOP SNOOP Snoop Amplifier C R SNOOP SNOOP DS-CPC5620/CPC5621-R05.1 www.ixysic.com 1 3kVrms IsolationCPC5620/CPC5621 INTEGRATED CIRCUITS DIVISION 1 Electrical Specifications . 3 1.1 Absolute Maximum Ratings . 3 1.2 Performance 4 1.3 Pin Description 5 2 Application Circuits 6 2.1 Resistive Termination Application Circuit 6 2.1.1 Resistive Termination Application Circuit Part List 7 2.1.2 Reactive Termination Application Circuit Part List . 9 3 Using LITELINK . 10 3.1 Switch Hook Control (On-hook and Off-hook States) 10 3.2 On-hook Operation: OH=1 . 10 3.2.1 Ringing Signal Reception via the Snoop Circuit 10 3.2.2 Polarity Reversal Detection with CPC5621 in On-hook State . 11 3.2.3 On-hook Caller ID Signal Reception 11 3.3 Off-Hook Operation: OH=0 12 3.3.1 Receive Signal Path . 12 3.3.2 Transmit Signal Path 12 3.4 Start-up Requirements . 13 3.5 DC Characteristics . 13 3.5.1 Setting a Current Limit . 13 3.6 AC Characteristics . 13 3.6.1 Resistive Termination Applications . 13 3.6.2 Reactive Termination Applications 13 3.6.3 Mode Pin Usage 14 4 Regulatory Information 14 5 LITELINK Design Resources 14 6 LITELINK Performance . 15 7 Manufacturing Information 17 7.1 Mechanical Dimensions . 18 2 www.ixysic.com R05.1