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XE0052S1
July 2000
Slim V.34 Telephone Line Interface with 2/4 Wire Hybrid
Description The XE0052S1 is a compact telephone interface module which supports V.34 communications at data rates to 33,600 bps yet is just 0.31 inches thick. The XE0052S1complies with FCC Part 68 Rules for connection to the public telephone network. The XE0052S1 is a complete DAA. It includes the 2-4 wire convertor to separate the transmit and receive signals, ring detection, and the switch hook to control line access. The XE0052S1 integrated RI output remains low for the duration of the ring signal. Xecom provides the XE0052S1 in a compact SIP package. The XE0052S1 mounts vertically on the printed circuit board to minimize the consumption of board space. Features * Small Size: just 1.5" by 0.5" by 0.31"; * FCC Part 68 Compliant; * Ul 1459 Recognized Part * Internal 2-4 wire convertor separates transmit and receive signals * Integral Ring Detector * Single +5V Operation; * * Hookswitch Control Compatible with V.34 data transfer
XE0052S1 Block Diagram
Tx Rx 2 TO 4 WIRE CONVERTER SURGE AND PROTECTIVE NETWORK LINE CURRENT CIRCUIT TIP
RING
OH
HOOKSWITCH CONTROL
RI
RING DETECT CIRCUIT
XECOM
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XE0052S1
XE0052S1 Mechanical Specifications
C B
A
Pin 1 Pin 1
H F G F E
Inches Min Max 0.300 0.490 1.490 0.040 1.390 0.090 0.790 0.125 0.320 0.510 1.510 0.060 1.410 0.110 0.810 0.200 Millimeters Min Max 7.62 12.45 37.85 1.02 35.31 2.29 20.07 3.18 8.13 12.95 38.35 1.52 35.81 2.79 20.57 5.08
D
Dim A B C D E F G H
XECOM
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XE0052S1
XE0052S1 Pin Configuration (Top view)
8
O
7
O
6
O
5
O
4
O
3
O
2
O
1
O
/RI
RX VCC Gnd TX
OH
Tip Ring
XE0052S1 Pin Descriptions Pin
1
Name
Ring
Description
Ring connection to the phone line (RJ11 Pin 4). The Ring pin has 1500 volts isolation from the rest of the circuitry. This isolation must be preserved throughout the system. Tip Connection to the phone line (RJ11 Pin 3). The Tip pin has 1500 volts isolation from the rest of the circuitry. This isolation must be preserved throughout the system. Hookswitch relay control. A high on OH closes the internal relay and connects the equipment to the telephone line. TX provides the analog input signal to the 2-4 wire convertor of the XE0052S1. TX uses a 2.5 volt reference signal and therefore must be capacitively coupled to the host equipment. Ground +5 Volts supply power RX provides the analog output signal from the 2-4 wire converter of the XE0052S. RX uses a 2.5 volt reference signal and therefore must be capacitively coupled to the host equipment. Ring Indicate, output, active low, TTL. A low on /RI indicates the modem is receiving a ring signal.
2
Tip
3
OH
4
TX
5 6 7
GND VCC RX
8
/RI
XECOM
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XE0052S1
XE0052S1 Electrical Specifications (VCC = 5V + 10%, Ta = 0 to 70C)
Parameter
Power Supply Current Transmit Insertion loss Receive Insertion loss Line Impedance Transhybrid Loss
Conditions
Ring Indicate Active 600 Ohm Impedence, 1000 Hz 600 Ohm Impedance, 1000 Hz At 1000 Hz Attenuation between transmiter input and receiver output at 1KHz with 600 ohm line termination Min. AC voltage between Tip & Ring Type B ringer Ringing voltage of 40 Vrms applied between Tip & Ring No Ringing Voltage present Ring Voltage present on Tip and Ring ON: (off-hook) OFF: (on-hook) Off-Hook
Min
Typ
10 0 0
Max Units
15 mA dB dB 660 Ohms dB
540 10
600 18
Ring Detect Sensitivity Ring Detect Peak Current Ring Detect Idle Current Ring Indicate Output Loop Current Switch Control Voltage Loop Current Switch Control Current
38 100 10 0.2 4.0 0.8 0.5 0.5
Vrms uA uA Volts Volts Volts mA
XE0052 Absolute Maximum Ratings
Storage Temperature Operating Temperature Range Maximum Lead Temperature (soldering 2 seconds per wave) -25 C to +85 C 0OC to +70OC 260OC
O O
XECOM
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XE0052S1
XE0052 Typical Connection Diagram
+5 Volts
XE0052S or XE0052T
/RI Rx Vcc Gnd Tx OH 876543 Tip Ring 2 1 10 ohms, 1/2 W FB1 Teccor P3100SB
Modem Analog Front End
/Ring
RJ11 4 3
Receive 10 mFd 10 ohms, 1/2 W Transmit 10 mFd OHRLY
FB2
C1 470 pFd 2600 Volts
C2 470 pFd 2600 Volts
Notes: C1, C2, FB1, and FB2 provide filtering to meet EMI restrictions. These components may be omitted if your equipment meets the appropriate EMI standards without them. For Capacitors C1 and C2 Xecom recommends Panasonic part Number ECKDRS471. For Ferrite Beads FB1 and FB2 Xecom recommends TDK Part Number ACB2012L-120.
XECOM
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XE0052S1
XE0052S1 FCC Instructions
When developing a product to be connected to the telephone line, it is necessary to use a circuit described as a Data Access Arrangement (DAA) which is approved by the appropriate governmental agency. In the US, for example, this agency is the Federal Communications Commission (FCC), while in Canada it is the Department of Communications (DOC). These agencies test and approve the product to ensure that it meets their specifications, thereby protecting the telephone system from damage and protecting the user from high voltage transients (such as lightning strikes) which may come down the telephone line. The XE0052S1 has been designed to meet all FCC Part 68 requirements for hazardous voltage, surge protection and leakage current. If the system developed transmits data, or DTMF tones on the telephone line, the user must certify that the signals transmitted meet basic FCC requirements for maximum transmission levels, out of band energy and billing delay. Full details may be obtained from the FCC under Part 68 of the FCC Rules and Regulations, or in Title 47 of the Code of Federal Regulations, however the basic requirements are as follows: 1. Maximum Transmit Level For the normal "permissive" (standard) telephone line, equipment which transmits data (such as a modem) must not exceed a transmission level of -9 dBm. 2. Out of Band Energy Data equipment must not transmit "out of band" energy on the telephone line which exceeds the following limits: Frequency Range Max. Power 200Hz 3990Hz 4005Hz 8kHz 86kHz 270kHz 3. DTMF Transmission Level If the system is capable of DTMF dialing, the maximum DTMF transmission level must be less than 0 dBm averaged over a 3 second interval. 4. Billing Delay A delay of 2 seconds or greater is required after the time the XE0052S1 is taken "off hook" and before any information is transmitted. This is required to ensure that billing information may be exchanged between telephone company central offices without interference. The user of the XE0052S1 must certify to the FCC that the final system meets the requirements of Part 68 which include the criteria above as well as the high voltage protection provided by the XE0052S1. This is generally accomplished through an independent testing lab which tesst the System and submits the proper paperwork to the FCC for approval. Since the XE0052S1 already complies with FCC Part 68 rules, this is a relatively simple process. to to to to to to 3990Hz 4005Hz 16kHz 94kHz 270kHz 6MHz -9 dBm -27 dBm -16 dBm -47 dBm -46 dBm -6 dBm
XECOM
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XE0052S1
Terms of Sale
Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM makes no warranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of the described devices from patent infringement. XECOM makes no warranty of merchantability or fitness for any purposes. XECOM reserves the right to discontinue production and change specifications and prices at any time and without notice. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing and authorization by XECOM for such application. Xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xecom product. No other circuits, patents, or licenses are implied.
Life Support Policy
Xecom's products are not authorized for use as Critical Components in Life Support Devices or Systems. Life Support Devices or Systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions provided in the labeling, can be reasonably expected to result in significant injury to the user. A Critical Component is any component of a life support device or system whose failure to perform can be reasonably expected to cause failure of the life support device or system, or to affect its safety or effectiveness.
Copyright, Xecom (c) 2000 While Xecom, Inc. has made every effort to ensure that the information presented here is accurate, Xecom will not be liable for any damages arising from errors or omission of fact. Xecom reserves the right to modify specifications and/or prices without notice. Product mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies.
Xecom Incorporated 374 Turquoise Street, Milpitas, CA 95035 Ph:408-945-6640 Fax:408-942-1346 Email: info@xecom.com
XECOM
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XE0052S1

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