CPCLA CYG2911 Datasheet
1
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CYG2911
DS-CYG2911-R1
The CYG291 1 is a Data Access Arrangement (DAA) module providing a complete telephone line interface circuit in
a small 1.07" x 1.07" x 0.4" plastic package. This module
incorporates a circuit which signals HIGH when another
phone in parallel has been taken off-hook when the
CYG2911 is off-hook. This feature is important for cable
TV set-top boxes and direct broadcast satellite units
which must hang-up (go on-hook) when a consumer
needs the phone line to place a 911 or emergency call.
The module is designed to meet FCC Part 68 requirements thus providing a low-risk design solution.
• Home medical devices
• Plant monitoring equipment
• Security/alarm systems
• Utility meters
• Network routers
• PBX systems
• Telephony applications
• Set top boxes
• UL 1950/UL1459
• Compatible with U.S. and Canadian phone lines
• Transformer signal coupling
• Complete ring detector circuit
• Low power hookswitch
• Electronic inductor/gyrator circuit
• Surge protection
• Caller ID pinout to external relay (optional)
• Transient protection zeners
• V.32 compatible
• FCC Compatible
• PC board mountable
• Parallel telephone off-hook detection
Applications
Features
Description
Approvals
Cybergate™
Ordering Information
Part # Description
CYG2911 DAA Module
Block Diagram
8
7
9
RING
OH
911
1
2
17
18
11
10
14
13
HOOKSWITCH
LINE 2
LINE 1
RING
GND
V
CC
V
CC
TIP
RING
GYRATOR/
CALLER ID
V
CC
RING
R_LIM
R_LIM
V
CC
200k
47k
911
RING
DETEC-
TION
SURGE
PROTEC-
TION
CID1
CID2
CYG2911
470Ω
Handling and Assembly Recommendations
The CYG2911 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.
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CYG2911
R1
Electrical Characteristics
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.
Absolute Maximum Ratings (@ 25˚ C)
2
Parameter Conditions Min Typ Max Unit
DC Electrical Characteristics
On-Hook Impedance @100VDC across pins 10 - - MΩ
10,11 (R,T), per FCC 68.312
Off-Hook Line Leakage Current @100VDC across pins - - 10 µA
10,11 (R,T), per FCC 68.312
Hookswitch Resistance - - - 15 Ω
Off-Hook Supply Current @+5V, V
CC
789mA
Hookswitch Power Source, Pin 8 - 4.75 5.0 20 V
DC Loop Current - 20 - 120 mA
AC Signal Path Electrical Characteristics
Return Loss 300-3500Hz 18 25 - dB
Insertion Loss
Transmit Test Circuit 1 - - 9 dB
Receive Test Circuit 2 - - 9 dB
Frequency Response 300-3500Hz -0.25 - +0.25 dB
Longitudinal Balance
On-Hook Per FCC 68.310 60 - - dB
Off-Hook Per FCC 68.310 40 - - dB
DC Loop Current - 20 - 120 mA
Total Harmonic Distortion + N @600Hz and -10dBm - -45 - dBm
Secondary Load Impedance Line 1 and Line 2 - 294 - Ω
Primary Source Impedance Tip and Ring - 600 - Ω
Ring Detection Circuit Characteristics
Ringing Voltage Detection Range - 20 - 150 V
RMS
Ringing Frequency Detection Range - 15 - 70 Hz
Ringer Equivalence Number - - 0.8B RING (Pin 9) Output Voltage (Pulsed) V
CC
@+5V
Logic ‘0’, Ring present - - 0.8 V
Logic ‘1’, Ring not present - - V
CC
V
Surge, Transient, and Isolation Characteristics
Surge Protection Voltage Tip and Ring
(Pins 11,10) - - - 300
Transient Voltage Protection on
Line 1 and Line 2 (Pins 1,2) - -5 - +5 V
Isolation Voltage
(Pins 1,2,7,8,9,17,18 to 10,11,13,14) Per FCC 68.302 - - 1000 V
RMS
Parameter Min Typ Max Units
Isolation Voltage - 1000 V
RMS
Operational Temperature 0 +70 °C
Storage Temperature 0 - +100 °C
Relative Humidity 10 - 85 %
(Non-Condensing)
Soldering Temperature - - +260 °C
Tip/Ring (5, 6) Load Current
(continuous) - - 120 mA
Hookswitch LED Drive Current - - 50 mA
Hookswitch LED Reverse Voltage - - 5 V
Ring Detect Phototransistor
Voltage V
CC
--20V
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