INTEGRATED CIRCUITS DIVISION
DS-CYG2111-R02 www.ixysic.com 1
Features
•Low Distortion Transformer Signal Coupling
•Complete Ringing Detector Circuit
•Low Power Hook Switch
•Electronic Inductor/Gyrator Circuit
•Surge Protection
•V.32 bis/V.34 Compatible
•PTT and Safety Regulations for CTR-21 Countries
•PC Board Mountable
Applications
•Home Medical Devices
•Plant Monitoring Equipment
•Security/Alarm Systems
•Utility Meters
•Modems
•Voice Mail Systems
•Vending Machines
•Elevator Control Boxes
•Network Routers
•PBX Systems
•PC Mother Boards
•Telephony Applications
•Digital Telephone Answering Machines
Description
IXYS Integrated Circuits Division's CYG2111 Series
DAA Module provides a complete telephone line
interface circuit in a small (1.07" x 1.07" x 0.4")
package. The module provides a fast and
cost-effective solution for designs that require an
interface to the telephone line.
The CYG2111 is specifically designed to meet PTT
and safety regulations for CTR-21 regulated countries.
Approvals
•BSI Certified
Ordering Information
Typical Application
Part Description
CYG2111 CYBERGATE Module (CTR-21 Countries)
(18/Tube)
HYBRID
CIRCUIT
5
3
RING
OH
300Ω1
2
10
6
7
11
4
TO TELEPHONE LINE
GYRATOR
SURGE
PROTECTOR
RING
DETECT
NETWORK
V
CC
V
CC
470Ω
56kΩ
HOOKSWITCH
V
CC
LINE 2
LINE 1
MUTE
RING
GNDGND
V
CC
TX1
TX2
RX
OH RELAY
RING
TIP
4.3V
4.3V
CYG2111
Rm
FROM µC
CYG2111
CybergateTM DAA
INTEGRATED CIRCUITS DIVISION
R02 www.ixysic.com 2
CYG2111
1 Specifications
1.1 Absolute Maximum Ratings @ 25°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.
1.2 DC Electrical Characteristics @ 25°C (Unless Otherwise Noted)
1 For VCC > +12V, select an external resistor (R) such that ((VCC - 1.4) / R) < 50mA
1.3 AC Signal Path Electrical Characteristics @ 25°C (Unless Otherwise Noted)
Symbol Ratings Units
Isolation Voltage, Input to Output 1500 Vrms
Tip/Ring Load Current
(Continuous) 60 mA
Hook Switch LED Drive Current 50 mA
Hook Switch LED Reverse Voltage 5 V
Ring Detect Phototransistor
Voltage VCC
20 V
Relative Humidity
(non-condensing) 10-85 %
Operational Temperature 0-70 °C
Storage Temperature 0-100 °C
Parameter Conditions Minimum Typical Maximum Units
On-Hook Impedance VTip-Ring = 100VDC 10 - - M
Off-Hook Line Leakage Current VTip-Ring = 100VDC --10A
Off-Hook Relay Supply Current VCC = +5VDC 789mA
Hook Switch Power Source -4.75 5 20 V
DC Loop Current -5-60mA
Mute Relay Supply Current VCC = +5VDC 789mA
Parameter Conditions Minimum Typical Maximum Units
Return Loss 300Hz to 3500Hz (600)14 25 - dB
Insertion Loss
Tran s mi t Te s t C i r c u i t 1 --7.5dB
Receive Test Circuit 2
Frequency Response 300Hz to 3500Hz -0.25 - +0.25 dB
Longitudinal Balance
On-Hook - 60 - - dB
Off-Hook - 40 - -
Total Harmonic Distortion f = 350Hz, P = -10dBm --80-dB
Secondary Load Impedance Line 1 & Line 2 -300-
Primary Source Impedance Tip & Ring -600-
INTEGRATED CIRCUITS DIVISION
3www.ixysic.com R02
CYG2111
1.4 Ring Detection Circuit Electrical Characteristics @ 25°C (Unless Otherwise Noted)
1.5 Surge, Transient, and Isolation Electrical Characteristics @ 25°C (Unless Otherwise Noted)
1.6 Test Circuits
1.7 CYG2111 Pinouts and Definitions
Parameter Conditions Minimum Typical Maximum Units
Ringing Voltage Detection Range - 29 - - Vrms
Ringing Frequency Detection Range - 15 - 70 Hz
Ringing Impedance f = 25Hz -18-k
RING (Pin 9) Output Voltage (Pulsed)
Logic “0”, Ring Present --0.8
V
Logic “1”, Ring Not Present --
VCC
Parameter Conditions Minimum Typical Maximum Units
Surge Protection Voltage Tip & Ring (Pins 11, 10) - --300V
Isolation Voltage, Pins (1, 2, 3, 4, 5, 6, 7) to (10, 11) 60 Seconds - - 1500 Vrms
Pinouts Pin# I/O Name Function
1I/O LINE 1 Transformer isolated audio signal coupling path for the
telephone line.
2I/O LINE 2 Transformer isolated audio signal coupling path for the
telephone line.
3ORING
Active low indicates incoming ring signal. This is pulsed low by
the AC ring signal at the ring frequency.
4I GND Connected to host system ground.
5IOH
Driving this pin low asserts the off-hook condition. The hook
switch LED is current limited by an internal 470 resistor.
6IMUTE
Driving this pin low activates the mute relay for pulse dialing.
See Figure 1. The mute relay LED is current limited by an
internal 470 resistor.
7IVCC
Provides power to the hook switch LED. Voltage is usually +5V
(for 8mA LED current). LED is current limited by an internal
470 resistor. VCC should not exceed 20V.
10 I/O RING Connection to telephone line Ring conductor.
11 I/O TIP Connection to telephone line Tip conductor.
+V
BATT
-V
BATT
10H
600Ω
10H
TIP
RING
V
R
V
LR
I
LOOP
Test Circuit 2: CYG2111 Receive Insertion Loss
Rm
300Ω
AC
Source
LINE1
LINE2
OH
RING
V
CC
GND
MUTE
GLog
V
V
RC
R
LR
=20
Receive Insertion Loss =
LINE1
LINE2
+V
BATT
-V
BATT
OH
RING
10H
600Ω
10H
TIP
RING
V
CC
GND
MUTE
Rm
300Ω
V
T
V
LT
I
LOOP
Test Circuit 1: CYG2111 Transmit Insertion Loss
G Log
V
V
TR
LT
T
=20
Transmit Insertion Loss =
Top View
LINE 1 (PIN 1)
LINE 2
RING
MUTE
OH
GND
VCC
RING
TIP
INTEGRATED CIRCUITS DIVISION
R02 www.ixysic.com 4
CYG2111
2 Off-Hook Transient Requirement
In order to meet Section 4.6.1 of the CTR-21 requirement, it is necessary to assert the MUTE pin of the CYG2111 for
a duration of 80ms after the OH pin is driven low as shown in Figure 1. This can be accomplished via the host
firmware or external hardware as shown in Figure 2 and Figure 3 respectively.
Figure 1. MUTE and OH Timing
Figure 2.
Figure 3.
Asserting the MUTE pin causes the internal gyrator circuit in the CYG2111 to be bypassed, allowing low impedance
pulse dialing to be performed by pulsing the OH pin. In Figure 2, the micro-controller output port going to the MUTE pin
is used as a shunt for low impedance dialing, and is asserted for 80ms when the OH signal is asserted. This method
is preferred when the user has control of the host firmware, and can easily write a subroutine to accomplish this
function.
For users who do not have easy access to the modem firmware, some external hardware can be added to accomplish
the same function. Figure 3 shows a monostable multivibrator (one-shot) such as an NE555 timer that is designed to
generate an 80ms low-going pulse upon the assertion of the OH signal. This 80ms pulse is ANDed with the low
impedance pulse dial shunt signal which overrides the 80ms signal when pulse dialing is enabled. The pulse dial
shunt signal is included as a standard output pin in most modem chip sets. This pin is activated when an ATDP
command is issued to the modem.
80ms
OH
MUTE
MUTE
OH
Output Port
Output Port
µCCYG2111
INTEGRATED CIRCUITS DIVISION
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CYG2111
3 Manufacturing Information
3.1 Handling and Assembly Recommendations
The CYG2111 products are not hermetically sealed, and should not be exposed to any liquid-based rinsing
processes. IXYS Integrated Circuits Division recommends two (2) approaches: (1) the modem should be installed in a
wave-soldering process that uses a no-clean soldering flux that will mostly evaporate during the normal
wave-soldering processes, (2) the modem should be soldered in by hand after the rest of the card is wave-soldered.
3.2 Reflow Profile
This product has a maximum solder temperature as shown below.
3.3 Mechanical Dimensions
3.3.1 CYG2111
Device Maximum Temperature
CYG2111 260°C
LINE 1 (PIN 1)
LINE 2
RING
MUTE
OH
GND
V
CC
RING
TIP
27.18
(1.070)
27.18
(1.070) 10.16
(0.400)
0.634 SQ.
(0.025)
TYP.
SIDE VIEWTOP VIEW
3.18
(0.125)
PCB Pattern
(Top View)
Dimensions
mm
(inches)
2.54
(0.100)
typ.
21.59
(0.850)
1.91
(0.075)
3.43
(0.135)
1.09 DIA.
(0.043)
TYP.
For additional information please visit our website at: www.ixysic.com
IXYS Integrated Circuits Division makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make
changes to specifications and product descriptions at any time without notice. Neither circuit patent licenses nor indemnity are expressed or implied. Except as set forth in IXYS Integrated
Circuits Division’s Standard Terms and Conditions of Sale, IXYS Integrated Circuits Division assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its
products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right.
The products described in this document are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other
applications intended to support or sustain life, or where malfunction of IXYS Integrated Circuits Division’s product may result in direct physical harm, injury, or death to a person or severe
property or environmental damage. IXYS Integrated Circuits Division reserves the right to discontinue or make changes to its products at any time without notice.
Specification: DS-CYG2111-R02
©Copyright 2012, IXYS Integrated Circuits Division
All rights reserved. Printed in USA.
12/19/2012
Mouser Electronics
Authorized Distributor
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