CPC5620/CPC5621
LITELINK™ III Phone Line Interface IC (DAA)
Features
•
Superior voice solution with high power option, low
noise, no automatic gain control circuit, and excel-
lent part-to-part gain accuracy
•
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
•
Supplied application circuit complies with the
requirements of TIA/EIA/IS-968 (FCC part 68),
UL1950, UL60950, EN60950, IEC60950,
EN55022B, CISPR22B, EN55024, and TBR-21
•
Complies with UL1577
•
Line-side circuit powered from telephone line
•
Compared to other silicon DAA solutions, LITELINK:
-
Uses fewer passive components
-
Takes up less printed-circuit board space
-
Uses less telephone line power
-
Offers simplified operation
-
Is a single-chip solution
Description
LITELINK III is a single-package silicon phone line
interface/DAA used in voice and data communication
applications to make connections between host equip-
ment and telephone networks.
LITELINK provides a high-voltage isolation barrier, AC
and DC phone line termination, switchhook, 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 the large isolation
transformers or capacitors used in other interface con-
figurations. It incorporates the required high-voltage
isolation barrier in the surface-mount SOIC package.
The CPC5620 (half-wave ring detect) and CPC5621
(full-wave ring detect) PLIs build upon Clare’s
LITELINK II line, with improved insertion loss control,
improved noise performance, and lower minimum cur-
rent draw from the phone line.
Applications
•
•
•
•
•
•
•
Computer telephony and gateways, such as VoIP
PBXs
Satellite and cable set-top boxes
V.92 (and other standard) modems
Fax machines
Voicemail systems
Embedded modems for POS terminals, automated
banking, remote metering, vending machines, secu-
rity, and surveillance
Pr
el
Isolation Barrier
Transmit
Isolation
Amplifier
Tx+
Tx-
Transmit
Diff.
Amplifier
MODE
OH
RING
CID
Vref
Gain Trim
Receive
Isolation
Amplifier
Rx+
Rx-
Receive
Diff.
Amplifier
CID/
RING
MUX
C
SNOOP
Snoop Amplifier
C
SNOOP
R
SNOOP
R
SNOOP
Vref
Gain Trim
im
Figure 1. CPC5620/CPC5621 Block Diagram
TIP+
DS-CPC5620/5621-R0.E
www.clare.com
in
a
Part Number
CPC5620A
CPC5620ATR
CPC5621A
CPC5621ATR
Transconductance
Stage
2-4 Wire Hybrid
AC/DC Termination
Hookswitch
RING-
Ordering Information
Description
32-pin PLI with half-wave ring detect, tubed
32-pin PLI with half-wave ring detect, tape
and reel
32-pin PLI with full-wave ring detect, tubed
32-pin PLI with full-wave ring detect, tape and
reel
ry
VI Slope Control
AC Impedance Control
Current Limit Control
1
CLARE [ CLARE, INC. ]
