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XE0046
02/98
High-Performance Quad DAA Module
Description
Xecom created the XE0046 for high-performance, multi-line applications. The XE0046 integrates four high performance DAA's into a single compact module. Each DAA circuit operates independently of all the others. Like all of Xecom's DAA modules, the XE00046 integrates a Ring Detect Circuit, Loop Current Holding Circuit, Solid-State Hookswitch, and Telephone Line Transformer for each line. The XE0046 also provides each line with a path for the Caller ID signal from the telephone network and a two-to-four wire convertor. The two-to-four wire convertor separates the receive signal from the transmit signal. Below is a list of the special features incorporated into the XE0046 for high-performance, multi-line applications.
XE0046 Features
* Four Individual DAA's in a Single Package; * Each DAA supports 33,600 bps data transfer; * Each DAA provides a path for the Caller ID signal from the phone company central office; * Each DAA includes a 2/4 four wire convertor; * Each DAA passes network signaling up to 0 dBm without distortion. * Small Size: 2.5 inches long, 1.5 inches wide, and 0.6 inches high; * FCC Part 68 Compliant; * Individual Ring Detection for each line; * Each DAA integrates a Low-Distortion Telephone Line Transformer; * Each DAA provides a1500 volts isolation between the phone line and all other circuits; * Solid-State Hookswitch Control for each line;
XE0046 Block Diagram
(This Block Diagram represents each DAA within the XE0046)
Caller ID
TX RX
2/4 Wire Convertor
Line Transformer
Line Current Holding Circuit
Tip Ring
OH
Hookswitch
RI
Ring Detector
XECOM
XE0046
XE0046 Mechanical Specifications
A Dim A B B C D E F F D E F G H J C Notes: These dimensions reflect the module's maximum envelope. J I/O pins are .025 inch square, tin-plated. Warning: There are un-insulated electrical conductors on the underside of the XE0046. No exposed electrical conductors should be routed under the module Inches Min 2.480 0.580 1.480 0.090 1.890 0.280 1.390 0.040 0.125 Max 2.520 0.620 1.520 0.110 1.910 0.320 1.410 0.060 Millimeters Min 62.99 14.73 37.59 2.29 48.01 7.11 35.31 1.02 3.18 Max 64.01 15.75 38.61 2.79 48.51 8.13 35.81 1.52 -
H G
H
XE0046 Pin Configuration
Vcc Vdd Tip1 Ring1 Tip2 Ring2 Tip3 Ring3 Tip4 Ring4 Gnd 1 2 4 6 8 10 12 14 16 18 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 TX1 RX1 OH1 /RI1 N/C TX2 RX2 OH2 /RI2 N/C TX3 RX3 OH3 /RI3 N/C TX4 RX4 OH4 /RI4 N/C
XECOM
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XE0046
XE0046 Signal Descriptions Pin
1 2 4, 8, 10, 16
Name
VCC Vdd Tip(n)
Description
VCC provides the + 5 volt power source for the XE0046. Vdd provides the -5 volt power source to the XE0046 Tip provides the second connection to the telephone network (RJ11 Pin 3) on each of the four internal DAAs. Tip has 1500 volts isolation from the rest of the circuitry. This isolation must be preserved throughout the system. Ring is one of two signals which form the telephone network connection (RJ11 Pin 4) on each of the four internal DAAs. The XE1046 is not sensitive to the polarity of the battery voltage on the telephone line. Ring has 1500 volts isolation from the rest of the circuitry which must be preserved throughout the system. This signal is used as common reference for all of the control signals in the XE0046. Signals on Tip and Ring are not referenced to ground. No Connect Ring Indicate, output, active low, TTL, RI provides a half-wave representation of the Ring appearing on each telephone line. Hook-switch relay control an active high input. A high on OH closes the internal relay within each DAA and connects the equipment to that telephone line. RX is the analog output from each DAA. RX is referenced to ground. The level of RX will be within 1 dB of the received signal on the telephone line. TX is the analog input to each DAA. The signal level at TX will be within 1 dB of the level of the transmitted signal on Tip and Ring. TX is referenced to ground.
6, 10, 14, 18
Ring(n)
20
GND
21, 26, 31, 36 22, 27, 32, 37
N/C /RI(n)
23, 28, 33, 38
OH(n)
24, 29, 34, 39
RX(n)
25, 30, 35, 40
TX(n)
Note: The "n" designates the DAA with which the signal connects. Only power and ground signals are common to all DAA's.
XECOM
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XE0046
Electrical Specification (Vcc = +5 Volts 10%,
Parameter
Icc Idd Transmit Insertion loss Receive Insertion loss Line Impedance Ring Detect Sensitivity (on-hook) Ring Detect Peak Current Ring Detect Idle Current Ring Indicate Output Voltage Loop Current Switch Control Voltage Loop Current Switch Control Current Loop Current Total Harmonic Distortion Caller ID Insertion Loss Off-Hook current draw from Telephone Line 1800 Hz, -9 dBm signal level Hookswitch open
Vdd = -5 Volts 10%,Ta=0 to 70 deg C)
Conditions
Off Hook, Vcc = 5.0 Volts Vdd = -5.0 volts 600 Ohm Impedance, 1000 Hz 600 Ohm Impedance, 1000 Hz At 1000 Hz, 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 & Ring ON: (off-hook) OFF: (on-hook)
Min
Typ
10 3
Max
15 5 1.0 1.0 660 150
Units
mA mA dB dB Ohms Vrms uA
-1.0 -1.0 540 38 100
0 0 600
10 0.2 2.0 3.0 0.2 15 0 -85 -8.0 -6.0 -4.0 0.5
uA Volts Volts Volts mA mA dBm dBm
0.5 25 100
XECOM
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XE0046
Telephone Line Connection Information
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 Industry Canada. 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 XE0046 has been designed to meet FCC Part 68 requirements for hazardous voltage, surge protection and leakage current. If the system transmits data, or DTMF tones on the telephone line, the user must certify that these transmitted signals meet FCC requirements for maximum transmission levels of 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 to 3990Hz -9 dBm 3990Hz to 4005Hz -27 dBm 4005Hz to 16kHz -16 dBm 8kHz to 94kHz -47 dBm 86kHz to 270kHz -46 dBm 270kHz to 6MHz -6 dBm 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 XE0046 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 XE0046 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 isolation provided by the XE0046. This is generally accomplished through an independent testing lab which test the System and submits the proper paperwork to the FCC for approval. Since the XE0046 already complies with FCC Part 68 rules, this is a relatively simple process.
XECOM
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XE0046
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) 1998 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 -66 40 Fax: 408 - 942-1346 E-Mail info@xecom.com
XECOM
XE0046

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