LITELINK
®
III Phone Line Interface IC (DAA)
CPC5622
Features
•
Superior voice solution with low noise and excellent
part-to-part gain accuracy
•
3 kV
RMS
line isolation
•
Simultaneous ringing detection and CID monitoring
for worldwide applications
•
Provides both full-wave ringing detect and half-wave
ringing detect for maximum versatility
•
Transmit power of up to +10 dBm into 600
Ω
•
Data access arrangement (DAA) solution for modem
speeds up to V.92
•
3.3V or 5 V power supply operation
•
Easy interface with modem ICs and voice CODECs
•
Worldwide dial-up telephone network compatibility
•
CPC5622 can be used in circuits that comply with
the requirements of TIA/EIA/IS-968 (FCC part 68),
UL60950 (UL1950), EN/IEC 60950-1
Supplementary Isolation Compliant, IEC60950,
EN55022B, CISPR22B, EN55024, and TBR-21
•
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
-
Is a single-IC solution
Description
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.
LITELINK uses on-chip optical components and a few
inexpensive external components to form the required
high voltage isolation barrier. LITELINK eliminates the
need for large isolation transformers or capacitors
used in other phone line interface configurations.
LITELINK also provides AC and DC phone line
terminations, switchhook, 2-wire to 4-wire hybrid,
ringing detection, and full time receive on-hook
transmission capability.
The CPC5622 is a member of and builds upon Clare’s
third generation of LITELINK products with improved
insertion loss performance and lower minimum current
draw from the phone line. The CPC5622 version of
LITELINK III provides concurrent ringing detection and
CID monitoring for world wide applications. Both
half-wave and full-wave ringing detection are provided
for maximum versatility.
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,
security, and surveillance
Tx+
Tx-
Ordering Information
Part Number
CPC5622A
CPC5622ATR
Description
32-Pin SOIC Phone Line Interface, 50/tube
32-Pin SOIC Phone Line Interface,
tape and reel, 1000/reel
Figure 1.
CPC5622 Block Diagram
Isolation Barrier
Transmit
Diff.
Amplifier
Transmit
Isolation
Amplifier
TIP
MODE
Tx.
Gain
Trim
3kV
rms
Isolation
OH
Rx.
Gain
Trim
Transconductance
Stage
2-4 Wire Hybrid
AC/DC Termination
Hook Switch
Receive
Isolation
Amplifier
RING
Rx+
Rx-
Receive
Diff.
Amplifier
Ringing Detect Outputs
Rx Amp
&
Ringing Det.
Snoop
Amplifier
C
SNOOP
C
SNOOP
Pb
RoHS
2002/95/EC
e
3
RING
RING2
Half Wave
Full Wave
R
SNOOP
R
SNOOP
DS-CPC5622 - R02
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1
CPC5622
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Resistive Termination Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Resistive Termination Application Circuit Part List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Reactive Termination Application Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Reactive Termination Application Circuit Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Using LITELINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Switch Hook Control (On-hook and Off-hook States) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 On-hook Operation: OH=1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 Ringing Signal Reception via the Snoop Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Off-Hook Operation: OH=0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 Receive Signal Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 Transmit Signal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Initialization Requirement Following Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1 Setting a Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 AC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.1 Resistive Termination Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.2 Reactive Termination Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.3 Mode Pin Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
4
5
6
6
7
8
9
10
10
10
10
12
12
12
13
13
13
13
13
13
13
4. Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5. LITELINK Design Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Clare, Inc. Design Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. LITELINK Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Tape and Reel Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.1 Moisture Reflow Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.2 Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17
17
18
18
18
18
18
2
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R02
CPC5622
1. Electrical Specifications
1.1 Absolute Maximum Ratings
Parameter
V
DD
Logic Inputs
Continuous Tip to Ring
Current (R
ZDC
= 5.2Ω)
Total Package Power
Dissipation
Isolation Voltage
Operating temperature
Storage temperature
Minimum Maximum
-0.3
-0.3
-
-
-
-40
-40
6
V
DD
+ 0.3
150
1
3000
+85
+125
Unit
V
V
mA
W
V
rms
°C
°C
Absolute maximum ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at conditions
beyond those indicated in the operational sections of this
data sheet is not implied.
Unless otherwise specified all specifications are at
25°C and V
DD
=5.0V.
R02
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3
CPC5622
1.2 Performance
Parameter
DC Characteristics
Operating Voltage V
DD
Operating Current I
DD
Operating Voltage V
DDL
Operating Current I
DDL
On-hook Characteristics
Metallic DC Resistance
Longitudinal DC Resistance
Ringing Signal Detect Level
Ringing Signal Detect Level
Snoop Circuit Frequency Response
Snoop Circuit CMRR
1
Ringer Equivalence
Longitudinal Balance
1
Off-Hook Characteristics
AC Impedance
Longitudinal Balance
1
Return Loss
Transmit and Receive Characteristics
Frequency Response
Transhybrid Loss
Minimum
3.0
-
2.8
-
10
10
5
28
166
-
-
60
-
60
-
30
-
Typical
-
9
-
7
-
-
-
-
-
40
0.01B
-
600
-
26
-
36
Maximum
5.5
13
3.2
8
-
-
-
-
>4000
-
-
-
-
-
-
4000
-
Unit
V
mA
V
mA
MΩ
MΩ
V
rms
V
rms
Hz
dB
REN
dB
Ω
dB
dB
Hz
dB
Conditions
Low-voltage side
Low-voltage side
Line side, derived from tip and ring
Line side, drawn from tip and ring while off-hook
Tip to ring, 100 Vdc applied
150 Vdc applied from tip and ring to Earth ground
68 Hz ringing signal applied across tip and ring
15 Hz ringing signal applied across tip and ring
-3 dB corner frequency @ 166 Hz, in Clare
application circuit
120 V
RMS
60 Hz common-mode signal across tip
and ring
Per FCC part 68
Tip to ring, using resistive termination application
circuit
Per FCC part 68
Into 600
Ω
at 1800 Hz
-3 dB corner frequency 30 Hz
Into 600
Ω
at 1800 Hz, with C18 in the resistive
termination application circuit
30 Hz to 4 kHz,
Resistive termination application circuit with MODE
de-asserted.
Reactive termination application circuit with MODE
asserted.
4 kHz flat bandwidth
-3 dBm, 600 Hz, 2
nd
harmonic
Single-tone sine wave. Or 0 dBm into 600
Ω.
Single-tone sine wave. Or 0 dBm into 600
Ω.
Sink and source
Transmit and Receive Insertion Loss
-0.4
0
0.4
dB
Average In-band Noise
-
Harmonic Distortion
-
Transmit Level
-
Receive Level
-
RX+/RX- Output Drive Current
-
TX+/TX- Input Impedance
60
Isolation Characteristics
Isolation Voltage
3000
Surge Rise Time
2000
MODE and OH Control Logic Inputs
Input Low Voltage
-
Input High Voltage
2.0
High Level Input Current
-
Low Level Input Current
-
RING and RING2 Output Logic Levels
V
DD
-0.4
Output High Voltage
Output Low Voltage
-
-126
-80
-
-
-
90
-
-
-
-
-
-
-
-
-
-
2.2
2.2
0.5
120
-
-
0.8
-
-120
-120
-
0.4
dBm/Hz
dB
V
P-P
V
P-P
mA
kΩ
V
rms
V/μS
V
IL
V
IH
μA
μA
V
V
Line side to Low-voltage side, one minute duration
No damage via tip and ring
V
IN
≤
V
DD
V
IN
= GND
I
OUT
= -400
μA
I
OUT
= 1 mA
Specifications subject to change without notice. All performance characteristics based on the use of Clare application circuits. Functional operation of the device at
conditions beyond those specified here is not implied.
NOTES:
1) This parameter is layout and component tolerance dependent.
4
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R02
CPC5622
1.3 Pin Description
Pin
1
2
3
4
5
6
7
8
9
Name
V
DD
TXSM
TX-
TX+
TX
MODE
GND
OH
RING
Function
Low-voltage (CPE) side power supply
Transmit summing junction
Negative differential transmit signal to DAA
from low-voltage side
Positive differential transmit signal to DAA from
low-voltage side
Transmit differential amplifier output
When asserted low, changes gain of TX path
(-7 dB) and RX path (+7 dB) to accommodate
reactive termination networks
Low-voltage (CPE) side analog ground
Assert logic low for off-hook operation
Half wave ringing detect output signal
Full wave ringing detect output signal
Negative differential analog signal received
from the telephone line. Must be AC coupled
with 0.1
μF.
Positive differential analog signal received from
the telephone line. Must be AC coupled with
0.1
μF.
Positive differential snoop input
Negative differential snoop input
Receive photodiode amplifier output
Receive photodiode summing junction
Power supply for line side, regulated from tip
and ring.
Receive isolation amp summing junction
Receive LED pre-bias current set
Bridge rectifier return
Electronic inductor DCR/current limit
DC feedback output
V to I slope control
Network amplifier feedback
External MOSFET gate control
Receive signal input
Bridge rectifier return
Transmit photodiode summing junction
Receiver impedance set
Transmit transconductance gain set
Transmit photodiode amplifier output
1.25 V
DC
reference
Figure 2. Pinout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
DD
TXSM
TX-
TX+
TX
MODE
GND
OH
RING
RING2
RX-
RX+
SNP+
SNP-
RXF
RX
REFL
TXF
ZTX
ZNT
TXSL
BR-
NTS
GAT
NTF
DCS1
DCS2
ZDC
BR-
RPB
RXS
V
DDL
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
10 RING2
11 RX-
12 RX+
13 SNP+
14 SNP-
15 RXF
16 RX
17 V
DDL
18 RXS
19 RPB
20 BR-
21 ZDC
22 DCS2
23 DCS1
24 NTF
25 GAT
26 NTS
27 BR-
28 TXSL
29 ZNT
30 ZTX
31 TXF
32 REFL
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