M-982-02 Precise Call Progress Tone Detector Features • Precise detection of call progress tones • Linear (analog) input • Digital (CMOS compatible), tri-state outputs • 22-pin DIP and 20-pin SOIC • Single supply 3 to 5 volt (low power CMOS) • Inexpensive 3.58 MHz crystal time base • Wide dynamic range (30 dB) • Lower power consumption (power-down mode) • 425 Hz detection Applications • Automatic dialers • Dialing modems • Traffic • Measurement equipment • Test equipment • Service evaluation • Billing systems Description The M-982-02 is an integrated circuit precise tone detector for special-purpose use in automatic following of switched telephone calls. The circuit uses lowpower CMOS techniques to provide the complete filtering and control required for this function. The basic timing of the M-982-02 is designed to permit operation with almost any progress tone system.The use of integrated circuit techniques allows the M-982-02 to pack the five filters for call progress following into a single 22-pin DIP or 20-pin SOIC. A 3.58 MHz crystal-controlled time base guarantees accuracy and repeatability. The M-982-02 is an enhanced drop-in replacement for the M-982-01. It has a wider operating voltage range (down to 3V). It has lower power consumption under normal operating conditions. In addition, a powerdown (PD) feature is provided to further reduce power consumption when inactive. It includes a 425 Hz detector to support common international call progress requirement. Pin Diagram Ordering Information Part # Description M-982-02P M-982-02S M-982-02T 22-pin plastic DIP 20-pin plastic SOIC 20-pin plastic SOIC,Tape and Reel Block Diagram DS-M982-02-R4 www.clare.com 1 M-982-02 Absolute Maximum Ratings Storage Temperature -40 to 150°C Operating Ambient Temperature -40 to 85°C VDD 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 these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability. 7V Input Voltage on SIGIN VSS - 6.5 to VDD + 0.3V Input Voltages (except SIGIN) VSS - 0.3 to VDD + 0.3 V Lead Soldering Temperature 260° C for 5 seconds Note: Exceeding these ratings may permanently damage the M-982-02. Specifications Operating Conditions Power VREF Signal Detection Parameter VDD Power supply noise Current drain (IDD) VREF Impedance Frequency range Level: VDD = 5.0V Conditions 0.1 - 5 kHz VREF open in-band signal XRANGE = open XRANGE = VSS Level: VDD = 3.0V Duration (tDD) Bridge time (tBB) Level skew between adjacent inband signals High level to low level signal for detection of both (tIL) Time to output (tDO) Signal Rejection Outputs Inputs for detection of both high = 0 dBm (775 mV) low = -30 dBm (24.5 mV) SIGIN ≈ -24 dBm SIGIN < -24 dBm Time from DET n to STROBE (tDS) Frequency range Level: VDD = 5.0V XRANGE = open XRANGE = VSS Level: VDD = 3.0V XRANGE= open XRANGE = VSS Interval duration (tID) Time to output (TIO) DET n, VOL ISINK = -1mA STROBE pins VOH ISOURCE=1mA DET n pins IOZ VO=VDD, VSS EN, OE, XRANGE, VIL MODE, PD pins VIH VDD = 5V VDD = 2.7V Pull-up and Pull-down MODE = VSS VDD = 5V currents VDD = 2.7V /Xrange = VSS PD =VDD 2 XRANGE = open XRANGE = VSS - - www.clare.com Min 2.7 48% of VDD 3.25 -1 -30 (24.5 mV) -40 (7.8 mV) -33 (17.4 mV) -43 (5.5 mV) 200 - Max 5.5 20 15 52% of VDD 8.25 +1 0 (775 mV) -10 (245 mV) -3 (549 mV) -13 (173.5 mV) 20 Units V mV p-p mA V kW % of fo dBm 1 6 - dB s -6 160 VDD -0.5 VDD - 2.0 VDD - 0.5 12.5 4 2 200 240 10 -6 -50(2.5 mV) -60 (0.8 mV) -53 (1.7 mV) -63 (.6 mV) 200 0.5 1 0.5 50 20 6 ms ms ms % of fo dBm dBm dBm dBm ms ms V V µA V V V µA µA µA 4 10 µA Notes 1 dBm dBm dBm ms ms - 1 - Rev. 4 M-982-02 Specifications (continued) Parameter SIGIN pin Clock Voltage range Input impedance Input spectrum External clock VIL connected to XIN pin VIH Duty cycle XIN, XOUT with crystal Capacitance osc. active Internal resistance Power up (TPU) X358 pin VOL VOH Tri-state Operation tEN,(High Z to Low Z) tDE,(Low Z to High )Z Duty cycle CL = 50 pF, RL = 100 kW Conditions Min Max Units f=500 Hz XOUT open XOUT open XOUT open PD hi to lo CL = 20 pF, ISINK = -1mA CL = 20 pF, ISOURCE =1mA CL = 20 pF - -6.5 80 VDD-0.2 40 20 - VDD 28 0.2 60 10 30 0.2 V kΩ kHz V V % pF MW ms V VDD - 0.2 40 250 250 60 ns ns V % Notes Unless otherwise noted, VDD - VSS = 5V, Ta = 25°C, PD at logical low state, and XRANGE at a logical high state. Power levels are in dBm referenced to 600 ohm. DC voltages are referenced to VSS. Notes: 1. Per tone. Call Progress Tones Pin Functions Pin DET 1 DET 2 DET 3 DET 4 DET 5 EN OE SIGIN STROBE VDD VREF VSS X358 XIN XOUT XRANGE MODE PD Funtion Active high tri-state output, detect for 350 Hz. Active high tir-state ooutput, detect for 400/620 Hz. (See Note.) Active high tri-state output, detect for 440 Hz. Active high tri-state output, detect for 480 Hz. Active high tri-state output, detect for 425 Hz. Active high enabled, when low drives STROBE low. Active high input. When low tri-state DET n pins. Analog signal input (internally capacitive coupled). Active high output, indicates valid DET n. Most positive power supply input pin. Internally generated mid-power supply voltage (output). Most negative power supply input pin. Buffered oscillator output (3.58 MHz). Crystal oscillator or digital clock input. Crystal oscillator output. Used only with a crystal. Use X358 when clock output signal is required. Active low input. Adds 10 dB of gain to input stage. Compatibility selection. Connection to VSS selects 400 Hz detection. (M-981-02 emulation.) Connection to VDD or no connection selects 620 Hz detection. Power-down operation, logic high inhibits internal clock. Internal pulldown resistor. Frequency (HZ) Use 1 2 350 400 440 440 440 480 480 350 620 941 425 440 Off Off 480 620 Off 620 Off Off 1209 Off Dial Tone Special Alert Tone Audible Ring Pre-empt Bell High Tone Reorder (Bell Low) Special Special DTMF “ ” European * Note: This output indicates 400 Hz detect when MODE is connected to VSS and 620 Hz detect when open, or connected to VDD. Rev. 4 www.clare.com 3 M-982-02 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-982-02 contains five signal detectors sensitive to the frequencies often used for these progress tones. Electronic equipment monitoring the DET n outputs of the M-982-02 can determine the nature of signals present by measuring their duty cycle. See the TriState Timing Diagram on page 5 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 M-982-02, can be used to decide what progress tones have been encountered. For example,dial tones as shown in the Call Progress Tone tabel on page 3 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 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-982-02 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. 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. Truth Table Signal Present (fo) 350 Hz 400 Hz (Note) 620 Hz (Note) 440 Hz 480 Hz 425 Hz Other (no detect) Any Any Any Any Any 4 Mode X 0 1/open X X X X X X X X X Det 1 1 X X X X X 0 0 0 Det 2 X 1 1 X X X 0 0 0 Det 3 Det 4 X X X X X X 1 X X 1 X X 0 0 0 0 0 0 High Impedance High Impedance High Impedance www.clare.com Det 5 X X X X X 1 0 0 0 Strobe 1 1 1 1 1 1 0 0 0 X 0 X PD 0 0 0 0 0 0 0 1 0 0 0 1 OE 1 1 1 1 1 1 1 1 1 0 0 0 EN 1 1 1 1 1 1 1 X 0 1 0 X Rev. 4 M-982-02 Signal Timing Tri-State Timing Power-Down Timing Typical Application Rev. 4 www.clare.com 5 M-982-02 Package Dimensions Tolerances (inches) Metric Approximation (mm) Min Nom Max Min Nom Max A - - .210 - - 5.33 A1 .015 - - .38 - - b .014 - .022 .36 - .56 b2 .045 .060 .065 1.1 1.5 1.7 C .009 - .015 .23 - .38 D 1.065 1.085 1.120 27.1 27.6 28.4 E .390 .415 .425 9.9 10.5 10.8 E1 .330 .360 .390 8.4 9.1 9.9 e .100 BSC 2.54 BSC ec 0° 15° 15° 0° L .115 .130 .160 2.9 Tolerances (mm) 15° 3.3 4.1 SAE approximation(inches) Min Max Min Max A 2.35 2.65 .0926 .1043 A1 .10 .30 .0040 .0118 b .33 .51 .013 .020 D 12.60 13.00 .4961 .5118 E 7.4 7.6 .2914 .2992 e 1.27 BSC .050 BSC H 10.00 10.65 .394 .419 L .40 1.27 .016 .050 Dimensions mm (inches) 6 www.clare.com Rev. 4 Worldwide Sales Offices CLARE LOCATIONS EUROPE ASIA/PACIFIC 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 European Headquarters CP Clare nv Bampslaan 17 B-3500 Hasselt (Belgium) Tel: 32-11-300868 Fax: 32-11-300890 Clare Switch Division 4315 N. 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Colombo 10/A I-20066 Melzo (Milano) Tel: 39-02-95737160 Fax: 39-02-95738829 http://www.clare.com 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 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-M982-02-R4 ©Copyright 2001, Clare, Inc. All rights reserved. Printed in USA. 7/24/01