CLARE CYG2911

CYG2911
Cybergate™
Description
The CYG2911 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.
Features
• 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
• Home medical devices
• Plant monitoring equipment
• Security/alarm systems
• Utility meters
• Network routers
• PBX systems
• Telephony applications
• Set top boxes
Approvals
• UL 1950/UL1459
• Compatible with U.S. and Canadian phone lines
Ordering Information
Part #
CYG2911
Description
DAA Module
Block Diagram
CYG2911
LINE 1
LINE 2
1
RING
R_LIM
470Ω VCC
2
GYRATOR/
CALLER ID
18
17
14
HOOKSWITCH
13
911
911
OH
RING
7
R_LIM
8
9
200k
VCC
47k
VCC
RING
SURGE
DETEC- PROTECTION
TION
RING
11
10
VCC
GND
CID1
CID2
TIP
RING
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.
DS-CYG2911-R1
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1
CYG2911
Absolute Maximum Ratings (@ 25˚ C)
Parameter
Min
Isolation Voltage
Operational Temperature
0
Storage Temperature
0
Relative Humidity
10
(Non-Condensing)
Soldering Temperature
Tip/Ring (5, 6) Load Current
(continuous)
Hookswitch LED Drive Current Hookswitch LED Reverse VoltageRing Detect Phototransistor
Voltage VCC
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.
Typ Max Units
1000 VRMS
+70
°C
- +100 °C
85
%
-
+260
°C
-
120
50
5
mA
mA
V
-
20
V
Electrical Characteristics
Parameter
DC Electrical Characteristics
On-Hook Impedance
Off-Hook Line Leakage Current
Hookswitch Resistance
Off-Hook Supply Current
Hookswitch Power Source, Pin 8
DC Loop Current
AC Signal Path Electrical Characteristics
Return Loss
Insertion Loss
Transmit
Receive
Frequency Response
Longitudinal Balance
On-Hook
Off-Hook
DC Loop Current
Total Harmonic Distortion + N
Secondary Load Impedance
Primary Source Impedance
Ring Detection Circuit Characteristics
Ringing Voltage Detection Range
Ringing Frequency Detection Range
Ringer Equivalence Number
RING (Pin 9) Output Voltage (Pulsed)
Logic ‘0’, Ring present
Logic ‘1’, Ring not present
Surge, Transient, and Isolation Characteristics
Surge Protection Voltage Tip and Ring
(Pins 11,10)
Transient Voltage Protection on
Line 1 and Line 2 (Pins 1,2)
Isolation Voltage
(Pins 1,2,7,8,9,17,18 to 10,11,13,14)
2
Conditions
Min
Typ
Max
Unit
@100VDC across pins
10,11 (R,T), per FCC 68.312
@100VDC across pins
10,11 (R,T), per FCC 68.312
@+5V, VCC
-
10
-
-
MΩ
-
-
10
µA
7
4.75
20
8
5.0
-
15
9
20
120
Ω
mA
V
mA
300-3500Hz
18
25
-
dB
Test Circuit 1
Test Circuit 2
300-3500Hz
-0.25
-
9
9
+0.25
dB
dB
dB
Per FCC 68.310
Per FCC 68.310
@600Hz and -10dBm
Line 1 and Line 2
Tip and Ring
60
40
20
-
-45
294
600
120
-
dB
dB
mA
dBm
Ω
Ω
VCC @+5V
20
15
-
0.8B
150
70
-
VRMS
Hz
-
-
0.8
VCC
V
V
-
-
-
300
-
-5
-
+5
V
Per FCC 68.302
-
-
1000
VRMS
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R1
CYG2911
Electrical Characteristics (Continued)
Parameter
911 Detection Characteristics (Pin 7)
Pulse Voltage
External phone off-hook
External phone on-hook
Pulse Width
Internal pull-up resistor
Conditions
Min
Typ
Max
Unit
Telephone DCR 200Ω
-
2.4
20
-
40
200K
VCC
0.8
60
-
V
V
mS
Ω
Package Pinout
CYG2911 Pinouts & Definitions
CYG2911
LINE 1
LINE 2
911
OH
RING
1
2
18
17
VCC
GND
14
13
11
10
7
8
9
PIN# I/O Name Function
1
I/O LINE1 Transformer isolated audio signal coupling path for the
telephone line.
CID1
CID2
2
I/O LINE2 Transformer isolated audio signal coupling path for the
telephone line.
TIP
RING
7
O
911
Signals HIGH for 20-60ms when the CYG2911 is off-hook
and another phone goes off-hook. Glitches may appear on
this pin when the CYG2911 first goes off-hook, and should
be ignored for a minimum of 200ms.
8
I
OH
Driving this pin LOW asserts the off-hook condition. The
hookswitch LED is current limited by an internal 470Ω
resistor.
9
O RING
Active LOW indicates an incoming ring signal. This is
pulsed LOW by the AC ring signal at the ring frequency
from 15-40Hz.
10
I/O RING
Connection to telephone line Ring conductor.
Top View
11
I/O
13
O CID2
Caller ID connection. CID1/CID2 connect to an external 1Form-A solid state relay (Clare LCA110). When the SSR is
closed (connecting CID1 to CID2), Caller ID information is
presented to LINE1/LINE2 after the first telephone ring
burst.
14
O CID1
Caller ID connection. See CID2 above.
17
I
GND
Connected to host system ground.
18
I
VCC
Provides power to the hookswitch LED. Typically +5V for ≈
8mA LED current. LED is current limited by an internal
470Ω resistor. VCC should not exceed 20V.
CYG2911
Caller ID Connections
TIP
Connection to telephone line Tip conductor.
Pins 13 & 14 should be connected to a 1-Form-A
relay (Clare LCA110), as follows:
VCC
µP Control
(Active Low)
R1
1
14
2
13
CID1
CID2
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Tel: 32-11-300868
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Tel: 1-949-831-4622
Fax: 1-949-831-4628
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Lead Rep
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91160 Champlan
France
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Clare Germany Sales
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Mitterstrasse 12
85077 Manching
Germany
Tel: 49 8459 3214 10
Fax: 49 8459 3214 29
Italy
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Tel: 44-1-823 352541
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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, without 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 physical harm, injury or death to a person.
Specification: DS-CYG2911-R1
©Copyright 2001, Clare, Inc.
All rights reserved. Printed in USA.
1/12/01