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Part: M-982-02
Category:
Communication
-> Telephony
-> Tone Decoder
Description: Precise Call Progress Tone Detector
Company: Clare, Inc.
Datasheet: Download M-982-02 datasheet File size : 875 kB
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Datasheet text preview:
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 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.
Applications · Automatic dialers · Dialing modems · Traffic · Measurement equipment · Test equipment · Service evaluation · Billing systems
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
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1
M-982-02
Absolute Maximum Ratings
Storage Temperature Operating Ambient Temperature VDD Input Voltage on SIGIN Input Voltages (except SIGIN) Lead Soldering Temperature -40 to 150°C -40 to 85°C 7V VSS - 6.5 to VDD + 0.3V VSS - 0.3 to VDD + 0.3 V 260° C for 5 seconds 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.
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) XRANGE = open XRANGE = VSS 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 1 -6 160 VDD -0.5 VDD - 2.0 VDD - 0.5 12.5 4 2 4 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 6 200 240 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 10 Units V mV p-p mA V kW % of fo dBm dBm dBm dBm ms ms dB s ms ms ms % of fo dBm dBm dBm dBm ms ms V V µA V V V µA µA µA µA
Rev. 4
Notes 1
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 -
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1
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2
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M-982-02
Specifications (continued)
Parameter 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 Duty cycle CL = 50 pF, RL = 100 kW SIGIN pin Conditions 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 Min -6.5 80 VDD-0.2 40 20 Max VDD 28 0.2 60 10 30 0.2 Units V k kHz V V % pF MW ms V Notes
Clock
Tri-state Operation
tEN,(High Z to Low Z) tDE,(Low Z to High )Z
VDD - 0.2 40 250 250
60 ns ns
V %
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.
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 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.
Call Progress Tones
Frequency (HZ) 1 350 400 440 440 440 480 480 350 620 941 425 2 440 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 Use
*
PD
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
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