complete telephone line interface circuit, including a 2-4
wire converter for transmit and receive signal separation
in a small 1.07" x 1.07" x 0.4" package. The module pro-
vides a fast and cost effective solution for designs that
require an interface to the telephone line. The module is
designed to meet FCC part 68 requirements thus provid-
ing a low risk design solution.
Applications
•
Modems
•
Fax machines
•
Remote data acquisition
•
Security systems
•
Voice mail systems
•
PC motherboard
•
Computer telephony
•
Process control
•
Medical
•
PBX
•
Direct broadcast satellite
Approvals
•
UL recognized file #: E174201
Ordering Information
Part #
CYG2217
Description
DAA Module (18/Tube)
Block Diagram
XMIT+
2 to 4
Wire
Converter
RCV
OH
Line
Transformer
Line
Current
Circuit
Surge
Protection
TIP
RING
Hookswitch
RI
Ring
Detect
Handling and Assembly Recommendations
The CYG2217 products are not hermetically sealed and should not be exposed to any liquid-based rinsing processes. Clare recommends two (2) approaches. The
modem should either use a no clean soldering flux that would mostly evaporate during the normal wave soldering processes, or be soldered in by hand after the rest of
the card is wave soldered.
DS-CYG2217-R1
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1
CYG2217
Absolute Maximum Ratings (@ 25˚ C)
Parameter
Isolation Voltage
Operational Temperature
Storage Temperature
Relative Humidity
(Non-Condensing)
Soldering Temperature
Tip/Ring Load Current
(continuous)
Hookswitch LED Drive
Current
Hookswitch LED Reverse
Voltage
Ring Detect Phototransistor
Voltage V
CC
1
2
Min
-
0
0
10
-
-
-
-
Typ Max Units
- 1000 V
RMS
-
70
°C
-
100
°C
-
85
%
-
-
-
-
260
120
50
5
°C
mA
mA
V
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 these
or any other conditions beyond those indicated in the
operational sections of this data sheet is not implied.
Exposure of the device to the absolute maximum ratings
for an extended period may degrade the device and effect
its reliability.
-
-
20
V
Derate Linearly 1.33 mw / oC
Derate Linearly 3.67 mw / oC
Electrical Characteristics
Parameter
DC Electrical Characteristics
On-Hook Impedance
2,1 (R,T) per FCC 68.312
Off-Hook Line Leakage Current
2,1 (R,T) per FCC 68.312
Power Supply Current @ VCC
Hookswitch Control Current @ (OH)
Hookswitch Control Voltage
Off-Hook
On-Hook
AC Signal Path Electrical Characteristics
Return Loss
Insertion Loss
Transmit
Receive
Frequency Response
Longitudinal Balance
On-Hook
Off-Hook
Transhybrid Loss
Total Harmonic Distortion
DC Loop Current
Ring Detection Circuit Characteristics
Ringing Voltage Detection Range
Ringing Frequency Detection Range
Ringer Equivalence Number
RING (Pin 5) Output Voltage (Pulsed)
Logic ‘0’, Ring present
Logic ‘1’, Ring not present
Surge and Isolation Characteristics
Surge Protection Voltage Tip and Ring
(Pins 1,2)
Isolation Voltage
(Pins 18,17,16,15,14,5,4,to1,2)
Conditions
@100V V
DC
across pins 1,2
@100V V
DC
across pins 1,2
V
CC
=5V
@V
OH
=2.4V
@V
OH
=5.0V
-
-
600Ω, 1800Hz
600Ω, 1800Hz
Test Circuit 1
Test Circuit 2
300-3500Hz
Per FCC 68.310
Per FCC 68.310
600Ω, 1800Hz
600Ω, 1800Hz
-
-
-
-
V
CC
=+5V
Min
10
-
4
3.5
11.8
2.0
-
39
6.0
-1.0
-0.25
60
40
-
-
20
20
15
-
-
-
Typ
-
-
5
4.1
12.4
3.0
0.2
40
6.5
0
-
-
-
-32
-80
-
-
-
0.8B
-
-
Max
-
10
6
5.0
13
20
0.5
-
7
+1.0
+0.25
-
-
-10
-
120
150
70
-
0.8
V
CC
Units
MΩ
µA
mA
mA
mA
V
V
dB
dB
dB
dB
dB
dB
dB
dB
mA
V
RMS
Hz
-
V
V
-
Per FCC 68.302
-
1000
-
-
300
-
V
V
RMS
Rev. 1
2
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CYG2217
Test Circuits
+V
BATT
10H
I
LOOP
1. CYG2217 Transmit Insertion Loss
+V
BATT
10H
600
Ω
I
LOOP
2. CYG2217 Receive Insertion Loss
600
V
LT
+5V
TIP
RING
OH
RI
GND
XMIT+
V
CC
NC
RCV
+5V
600
Ω
AC
Source
V
LT
V
T
AC
Source
10H
V
LR
TIP
RING
OH
+5V
RI
GND
XMIT+
V
CC
NC
RCV
+5V
10H
ÐV
BATT
V
R
ÐV
BATT
Receive Insertion Loss = G
RC
=
20 Log
V
R
V
LR
Transmit Insertion Loss = G
TR
=
20 Log
Package Pinout
CYG2217 Pinouts & Definitions
PIN# Name Function
1
TIP
RING
OH
RI
1
2
4
5
18
17
16
15
14
GND
XMIT+
V
CC
NC
RCV
CYG2217
CYG22XX
TIP
RING
OH
2
4
5
RI
14
RCV
15
16
NC
V
CC
17 XMIT+
18
GND
Connection to telephone line Tip connected through an
external fuse.
Connection to telephone line Ring conductor.
Driving this pin high asserts the off-hook condition. The
hookswitch LED is current limited by an internal 300Ω resis-
tor.
Active LOW indicates an incoming ring signal. This is pulsed
LOW by the AC ring signal and is not a steady state LOW
during ringing.
Provides the analog output signal from the 2-4 wire convert-
er of the CYG2217. RCV uses a 2.5 volt reference signal and
therefore must be capacitively coupled to host equipment
which uses a ground reference.
No connection.
Provides power to the CYG2217. Typically +5V, V
CC
should
not exceed 20V.
Provides the analog intput signal from the 2-4 wire converter
of the CYG2217. XMIT+ uses a 2.5 volt reference signal and
therefore must be capacitively coupled to host equipment
which uses a ground reference.
Connection to host system ground.
Rev. 1
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3
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CLARE LOCATIONS
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Tel: 1-949-831-4622
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European Headquarters
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Lead Rep
99 route de Versailles
91160 Champlan
France
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Germany
Tel: 49 8459 3214 10
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Burlington, Ontario L7N 3N1
Tel: 1-905-333-9066
Fax: 1-905-333-1824
http://www.clare.com
Clare cannot assume responsibility for use of any circuitry other
than circuitry entirely embodied in this Clare product. No circuit
patent licenses nor indemnity are expressed or implied. Clare
reserves the right to change the specification and circuitry, with-
out notice at any time. The products described in this document
are not intended for use in medical implantation or other direct life
support applications where malfunction may result in direct phys-
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