CYG2320 CybergateTM DAA INTEGRATED CIRCUITS DIVISION Features Description • • • • • • • • IXYS Integrated Circuits Division's CYG2320 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. 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 PC Board Mountable 16kHz Metering Filter The CYG2320 is designed to meet PTT and safety regulations in Australia. Applications • • • • • • • • • • • • • Approvals 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 • BSI Approved to EN60950 Ceritificate #8123 Ordering Information Part Description CYG2320 DAA Modem Australia Typical Application FROM μC 6 TX1 HYBRID CIRCUIT TX2 LINE 1 4.3V 4.3V LINE 2 VCC 1 10 2 VCC RING DETECT NETWORK RX GND RING OH RING 5 3 TO TELEPHONE LINE 11 470Ω TIP 4 56kΩ DS-CYG2320-R02 RING GYRATOR HOOKSWITCH OH RELAY VCC 7 SURGE PROTECTOR Rm 560 MUTE www.ixysic.com VCC GND 1 CYG2320 INTEGRATED CIRCUITS DIVISION 1 Specifications 1.1 Absolute Maximum Ratings @ 25°C Symbol Isolation Voltage, Input to Output Tip/Ring Load Current (Continuous) Hook Switch LED Drive Current Hook Switch LED Reverse Voltage Ring Detect Phototransistor Voltage VCC Relative Humidity (non-condensing) Operational Temperature Storage Temperature Ratings Units 1500 Vrms 120 mA 50 mA 5 V 20 V 10-85 % 0-70 °C 0-100 °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) Parameter Conditions Minimum Typical Maximum Units On-Hook Impedance VTip-Ring = 100VDC 10 - - M On-Hook Line Leakage Current VTip-Ring = 100VDC - - 10 A Off-Hook Relay Supply Current VCC = +5V 7 8 9 mA Hook Switch Power Source - 4.75 5 20 V DC Loop Current - 5 - 120 mA VCC = +5V 7 8 9 mA Mute Relay Supply Current 1.3 AC Signal Path Electrical Characteristics @ 25°C (Unless Otherwise Noted) Parameter Return Loss Conditions Minimum Typical Maximum Units f=300Hz to 3500Hz 14 25 - dB Test Circuit 1 Test Circuit 2 - - 7 dB 300Hz to 3500Hz -0.25 - +0.25 dB - - dB Insertion Loss Transmit Receive Frequency Response Longitudinal Balance On-Hook Off-Hook Total Harmonic Distortion - 60 40 f = 350Hz, P = -10dBm - -80 - dB Secondary Load Impedance Line 1 & Line 2 - 100 - Primary Source Impedance Tip & Ring - 600 - R02 www.ixysic.com 2 CYG2320 INTEGRATED CIRCUITS DIVISION 1.4 Ring Detection Circuit Electrical Characteristics @ 25°C (Unless Otherwise Noted) Parameter Conditions Minimum Typical Maximum Units - - Vrms Ringing Voltage Detection Range Ringing Frequency Detection Range - 29 50Hz to 70Hz 15 - 70 Hz f = 25Hz - 18 - k VCC = +5V - - Ringing Impedance RING Output Voltage (Pulsed) Logic “0”, Ring Present Logic “1”, Ring Not Present 0.8 VCC V 1.5 Surge, Transient, and Isolation Electrical Characteristics @ 25°C (Unless Otherwise Noted) Parameter Conditions Minimum Typical Maximum - - - 300 V 1500 Vrms Surge Protection Voltage Tip & Ring Isolation Voltage, Pins (1, 2, 3, 4, 5, 6, 7) to (10, 11) 60 Seconds - - Units 1.6 Test Circuits Test Circuit 2: CYG2320 Receive Insertion Loss Test Circuit 1: CYG2320 Transmit Insertion Loss VT Rm 560 LINE1 LINE2 RING GND OH MUTE VCC +5V VR Rm 560 +VBATT ILOOP 10H +5V TIP VLT +VBATT ILOOP TIP 10H 600 VLR 600 RING RING Transmit Insertion Loss = GTR = 20 Log LINE1 LINE2 RING GND OH MUTE VCC 10H VLT Receive Insertion Loss = G RC = 20 Log VT AC Source 10H VR V LR -VBATT -VBATT 1.7 CYG2320 Pinouts and Definitions Pinouts LINE 1 (PIN 1) LINE 2 RING GND OH Pin# I/O Name 1 I/O LINE 1 Transformer isolated audio signal coupling path for the telephone line. 2 I/O LINE 2 Transformer isolated audio signal coupling path for the telephone line. 3 O RING Active low indicates incoming ring signal. This is pulsed low by the AC ring signal at the ring frequency. 4 I GND TIP 5 I OH 6 I MUTE 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. 7 I VCC 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 RING Top View 3 Connected to host system ground. Driving this pin low asserts the off-hook condition. The hook switch LED is current limited by an internal 470 resistor. MUTE +VCC Function Connection to telephone line Tip conductor. www.ixysic.com R02 CYG2320 INTEGRATED CIRCUITS DIVISION 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 CYG2320 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 OH MUTE 80ms Figure 2. Output Port OH µC CYG2320 Output Port MUTE Figure 3. Output Port OH 80ms One-Shot µC Output Port CYG2320 MUTE Asserting the MUTE pin causes the internal gyrator circuit in the CYG2320 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. R02 www.ixysic.com 4 CYG2320 INTEGRATED CIRCUITS DIVISION 3 Manufacturing Information 3.1 Handling and Assembly Recommendations The CYG2320 is 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. Device Maximum Temperature CYG2320 260°C 3.3 Mechanical Dimensions 3.3.1 CYG2320 1.91 (0.075) 27.18 (1.070) 10.16 (0.400) 21.59 (0.850) LINE 1 (PIN 1) 3.43 (0.135) LINE 2 RING 27.18 (1.070) 2.54 (0.100) typ. GND OH MUTE VCC 0.634 SQ. (0.025) TYP. TIP RING 3.18 (0.125) TOP VIEW SIDE VIEW 1.09 DIA. (0.043) TYP. PCB Pattern (Top View) Dimensions mm (inches) 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-CYG2320-R02 ©Copyright 2012, IXYS Integrated Circuits Division All rights reserved. Printed in USA. 12/19/2012 5 www.ixysic.com R02