CPC5620/CPC5621
LITELINK® III
Phone Line Interface IC (DAA)
INTEGRATED
C
IRCUITS
D
IVISION
Features
Description
• Superior voice solution with low noise, excellent
LITELINK III is a single-package silicon phone line
interface (PLI) DAA used in voice and data
communication applications to make connections
between low-voltage equipment and high-voltage
telephone networks.
part-to-part gain accuracy
• 3 kV
line isolation
rms
• Transmit power of up to +10 dBm into 600
• Data access arrangement (DAA) solution for
modems at speeds up to V.92
• 3.3 or 5 V power supply operation
• Caller ID signal reception function
• Easy interface with modem ICs and voice CODECs
• Worldwide dial-up telephone network compatibility
• CPC5620 and CPC5621 can be used in circuits that
comply with the requirements of TIA/EIA/IS-968
(FCC part 68), UL1950, UL60950, EN/IEC 60950-1
Supplementary Isolation compliant, EN55022B,
CISPR22B, EN55024, and TBR-21
• Line-side circuit powered from telephone line
• Compared to other silicon DAA solutions, LITELINK:
- Uses fewer passive components
LITELINK provides a high-voltage isolation barrier, AC
and DC phone line terminations, switch hook, 2-wire to
4-wire hybrid, ring detection, and on-hook signal
detection. LITELINK can be used in both differential
and single-ended signal applications.
LITELINK uses on-chip optical components and a few
inexpensive external components to form a complete
voice or high-speed data phone line interface.
LITELINK eliminates the need for large isolation
transformers or capacitors used in other interface
configurations. It includes the required high-voltage
isolation barrier in a surface-mount SOIC package.
- Takes up less printed-circuit board space
- Uses less telephone line power
- Offers simplified operation
The CPC5620 (half-wave ringing detect) and
CPC5621 (full-wave ringing detect) build upon IXYS
Integrated Circuits Division’s LITELINK product line,
with improved insertion loss control, improved noise
performance, and lower minimum current draw from
the phone line. The new mode pin enables worldwide
implementation.
- Is a single-IC solution
Applications
• Computer telephony and gateways, such as VoIP
• PBXs
• Satellite and cable set-top boxes
• V.92 (and other standard) modems
• Fax machines
Ordering Information
Part Number Description
• Voicemail systems
CPC5620A
32-pin SOIC, half-wave ring detect, 50/Tube
32-pin SOIC, half-wave ring detect, 1000/Reel
32-pin SOIC, full-wave ring detect, 50/Tube
32-pin SOIC, full-wave ring detect, 1000/Reel
• Embedded modems for POS terminals, automated
banking, remote metering, vending machines,
security, and surveillance
CPC5620ATR
CPC5621A
CPC5621ATR
CPC5620/CPC5621 Block Diagram
TIP+
Isolation Barrier
Transmit
Isolation
Amplifier
Tx+
Tx-
Transmit
Diff.
Amplifier
VI Slope Control
Transconductance
Stage
2-4 Wire Hybrid
AC/DC Termination
Hookswitch
AC Impedance Control
Current Limit Control
MODE
OH
RING
CID
Vref
Gain Trim
RING-
Vref
Gain Trim
Receive
Isolation
Amplifier
Rx+
Rx-
Receive
Diff.
Amplifier
CID/
RING
MUX
CSNOOP
RSNOOP
Snoop Amplifier
CSNOOP
RSNOOP
DS-CPC5620/CPC5621-R05.1
www.ixysic.com
1