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M-980-02S

M-980-02S

  • 厂商:

    CLARE

  • 封装:

  • 描述:

    M-980-02S - 3V/5V General Purpose Call Progress Tone Detector - Clare, Inc.

  • 数据手册
  • 价格&库存
M-980-02S 数据手册
M-980-02 3V/5V General Purpose Call Progress Tone Detector Features • Covers the 315 to 640 Hz range (common call progress) • Sensitivity to -38 dBm • Dynamic range over 38 dB • 40 ms minimum detect • 8-pin DIP or 16-pin SOIC • Single supply CMOS (low power) • Supply range 2.8 to 5.5 VDC • Inexpensive 3.58 MHz time base • Low power consumption ( 1025 Hz, < 190 Hz. 4. Output current = 1 mA, VSS - VDD - 3.0V. 5. Input current - 10 mA max. 6. External clock. 7. Nominal = (VDD + VSS)/2. 8. Signal dropping from -38 to -65 dBm. 9. Signal dropping from -10 to -65 dBm. Pin Description Pin SIGIN DETECT ENABLE VDD VREF VSS XIN, XOUT Descriptions Signal input AC or DC coupled (see level limitations elsewhere). Active output indicating signal detection. Activated by ENABLE. Enables DETECT output. Used to mask signal activity. Most positive power supply pin. Internally generated reference voltage. (VSS + VDD) /2 volts. Most negative power supply pin. Crystal attachment pins. XIN may be used as the input for an external 3.58 MHz clock. 2 www.clare.com Rev. 3 M-980-02 Signal Timing Call Progress Tone Detection Call progress tones are audible tones sent from switching systems to calling parties to show the status of calls. Calling parties can identify the success of a call placed by what is heard after dialing. The type of tone used and its timing vary from system to system, and though intended for human ears these signals can provide valuable information for automated calling systems. The M-980-02 is a signal detector sensitive to the frequencies most often used for these progress tones. Electronic equipment monitoring the DETECT output of the M-980-02 can determine the nature of signals present by measuring their duty cycle. See Figure 4 for a diagram of a circuit that could be used to permit a microcomputer to directly monitor tones on the telephone line. Much of the character of the progress tones is in their duty cycle or cadence (sometimes referred to as interruption rate). This information, coupled with level and frequency indication from the M980-02, can be used to decide what progress tones have been encountered. Table 5 shows some call progress tones with on/off times; 0.25/0.25 being 250 ms on, 250 ms off on a repeating basis. For example, dial tones as shown in the table are usually “on” continuously and last until the first dial digit is received by the switching system. Line Busy, on the other hand, is turned off and on at a rate of 1 Hz with a 50% duty cycle, or an interruption rate of 60 times per minute (60 IPM). The tones can be distinguished in this way. It should be noted that while such techniques will usually be effective, there are some circumstances in which the M-980-02 cannot be accurately used. Examples include situations where ringback tone may be short or not even encountered. Ringback may be provided at ringing voltage frequency (20 or 30 Hz) with some harmonics and may not fall in the detect range, and speech or other strong noise may obscure tones making cadence measurement difficult. Detection of “answer” is most difficult for many reasons. One way to determine if a called party has answered is by looking for a short burst of DETECT indications without a cadence match (produced by a click and “hello” at the far end). Some applications will require special methods like speech detection, but most can be reliably handled with the M-980-02 and simple cadence measurement. As can be seen, the tones used for the same purposes in different systems may not be the same. Standards do exist and should be consulted for your particular application. In North America AT&Ts “Notes on the Network” or EIAs RS-464 PBX standard should be reviewed. In Europe tone plans may vary with locale, in which case the CEPT administration in each country must be consulted. Outside these areas, national PTT organizations can provide information on the systems within their borders. Device Timing Time tMD tID tB Value 40 ms 40 ms @ -38 dBm 85 ms @ -10 dBm 18 ms Significance A valid tone will always be detected if it is at least 40 ms long. Inter-tone gaps must be detected if greater than this duration. Drop-outs of valid tone of up to 18 ms will be ignored. Note: Application or removal of high level signals outside the must detect range may cause momentary detection, which may be filtered by time guarding the output. Rev. 3 www.clare.com 3 M-980-02 Call Progress Tones Frequency 1 350 425 600 400 480 600 480 600 440 500 440 Frequency 2 +440 X 120 +620 X 120 +620 X 120 + 480 X 40 On/Off Continuous 0.5/0.5s 0.25/0.25s 2.0/4.0s 0.5s burst Use Dial tones Line Busy Tones Reorder Tones Audible Ringing Various Telephone Line Circuit Application Detect Range Input Signal Configuration 4 www.clare.com Rev. 3 M-980-02 Mechanical Dimensions Tolerances Inches A A1 b b2 C D E E1 e ec L Min .015 .014 .045 .008 .355 .300 .240 .100 BSC 0° .115 15° .150 Max .210 .022 .070 .014 .400 .325 .280 Metric (mm) Min Max 5.33 .38 .36 .56 1.1 1.8 .20 .36 9.02 10.16 7.6 8.3 6.1 7.1 2.54 BSC 0° 15° 2.9 4.1 Tolerances Inches A A1 b D E e H L Min Max .0926 .1043 .0040 .0118 .013 .020 .3977 .4133 .2914 .2992 .050 BSC .394 .419 .016 .050 Metric (mm) Min Max 2.35 2.65 .10 .30 .33 .51 10.10 10.50 7.4 7.6 1.27 BSC 10.00 10.65 .40 1.27 Dimensions mm (inches) Rev. 3 www.clare.com 5 Worldwide Sales Offices CLARE LOCATIONS Clare Headquarters 78 Cherry Hill Drive Beverly, MA 01915 Tel: 1-978-524-6700 Fax: 1-978-524-4900 Toll Free: 1-800-27-CLARE Clare Switch Division 4315 N. Earth City Expressway Earth City, MO 63045 Tel: 1-314-770-1832 Fax: 1-314-770-1812 Clare Micronix Division 145 Columbia Aliso Viejo, CA 92656-1490 Tel: 1-949-831-4622 Fax: 1-949-831-4628 EUROPE European Headquarters CP Clare nv Bampslaan 17 B-3500 Hasselt (Belgium) Tel: 32-11-300868 Fax: 32-11-300890 France Clare France Sales Lead Rep 99 route de Versailles 91160 Champlan France Tel: 33 1 69 79 93 50 Fax: 33 1 69 79 93 59 Germany Clare Germany Sales ActiveComp Electronic GmbH Mitterstrasse 12 85077 Manching Germany Tel: 49 8459 3214 10 Fax: 49 8459 3214 29 Italy C.L.A.R.E.s.a.s. Via C. Colombo 10/A I-20066 Melzo (Milano) Tel: 39-02-95737160 Fax: 39-02-95738829 Sweden Clare Sales Comptronic AB Box 167 S-16329 Spånga Tel: 46-862-10370 Fax: 46-862-10371 United Kingdom Clare UK Sales Marco Polo House Cook Way Bindon Road Taunton UK-Somerset TA2 6BG Tel: 44-1-823 352541 Fax: 44-1-823 352797 ASIA/PACIFIC Asian Headquarters Clare Room N1016, Chia-Hsin, Bldg II, 10F, No. 96, Sec. 2 Chung Shan North Road Taipei, Taiwan R.O.C. Tel: 886-2-2523-6368 Fax: 886-2-2523-6369 SALES OFFICES AMERICAS Americas Headquarters Clare 78 Cherry Hill Drive Beverly, MA 01915 Tel: 1-978-524-6700 Fax: 1-978-524-4900 Toll Free: 1-800-27-CLARE Eastern Region Clare 603 Apache Court Mahwah, NJ 07430 Tel: 1-201-236-0101 Fax: 1-201-236-8685 Toll Free: 1-800-27-CLARE Central Region Clare Canada Ltd. 3425 Harvester Road, Suite 202 Burlington, Ontario L7N 3N1 Tel: 1-905-333-9066 Fax: 1-905-333-1824 Western Region Clare 1852 West 11th Street, #348 Tracy, CA 95376 Tel: 1-209-832-4367 Fax: 1-209-832-4732 Toll Free: 1-800-27-CLARE Canada Clare Canada Ltd. 3425 Harvester Road, Suite 202 Burlington, Ontario L7N 3N1 Tel: 1-905-333-9066 Fax: 1-905-333-1824 http://www.clare.com Clare, Inc. 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 Clare’s Standard Terms and Conditions of Sale, Clare, Inc. 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 Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Specification: DS-M980-02-R3 ©Copyright 2001, Clare, Inc. All rights reserved. Printed in USA. 7/20/01
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