CMX631AP3 Consumer Microcircuits Limited, CMX631AP3 Datasheet
CMX631AP3
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CMX631AP3 Summary of contents
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... This system (12kHz/16kHz) selectable integrated circuit, requires a 2.7V to 5.5V power supply which may be line-powered, is available in the following packages: 24-pin SSOP (CMX631AD5), 16-pin SOIC (CMX631AD4), and 16-pin PDIP (CMX631AP3). Additional package styles may be available to meet specific design requirements. 1998 Consumer Microcircuits Limited ...
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... Applications....................................................................................................................... 9 5.1 Input Configurations............................................................................................................... 9 5.1.1 Protection Against High Voltages ................................................................................................. 9 5.1.2 Aliasing ....................................................................................................................................... 10 The ‘Clock-Out’ Pin.............................................................................................................................. 10 6 Performance Specification ............................................................................................. 11 6.1 Electrical Specifications ....................................................................................................... 11 6.1.1 Absolute Maximum Ratings........................................................................................................ 11 6.1.2 Operating Limits ......................................................................................................................... 11 6.1.3 Operating Characteristics ........................................................................................................... 12 6.2 Packages............................................................................................................................. 14 1998 Consumer Microcircuits Limited CONTENTS 2 CMX631A Page D/631A/1 ...
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... Low Voltage SPM Detector 1 Block Diagram 1998 Consumer Microcircuits Limited Figure 1: Block Diagram 3 CMX631A D/631A/1 ...
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... 10, 5,6,12 N/C 11, 14, 15, 16, 22, 23 1998 Consumer Microcircuits Limited Description Type I/P The input to the on-chip clock oscillator; for use with a 3.579545MHz Xtal in conjunction with the Xtal output; circuit components are on-chip. When using a Xtal input, the Clock Out pin should be connected directly to the Clock In pin clock pulse input is used at the Clock In pin, this (Xtal/Clock) pin must be connected directly to VDD ...
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... When using an external clock input, X1 should be removed, Pin 1 (Xtal/Clock) should be tied to V the Clock In and Clock Out jumper should be removed, and the external clock signal applied to Clock In. 1998 Consumer Microcircuits Limited C1 C2 ...
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... Minimum tone detection, NOTONE indication or transient avoidance. SIGNAL INPUT TONE FOLLOWER OUTPUT PACKET MODE OUTPUT SIGNAL INPUT ...... TONE FOLLOWER OUTPUT ...... PACKET MODE OUTPUT ...... Figure 3: Tone Follower and Packet Mode Outputs 1998 Consumer Microcircuits Limited TONE NOTONE 6 RESPONSE DELAY DERESPONSE DELAY ...
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... X-axis. The point where the vertical line meets the X-axis will indicate the maximum allowable Input Amp gain. Input signals at or below the ‘Must-Not’ decode level will not be detected as long as the amplifier gain is no higher than this level. 1998 Consumer Microcircuits Limited 7 CMX631A ...
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... MUST NOT DECODE LEVEL -30 -35 -40 -45 -50 -25 -20 -15 Figure 5: Input Gain Calculation Graph for V 1998 Consumer Microcircuits Limited AMPLIFIER GAIN (dB 3.0V (±0.1) T AMB = -40°C to 85°C MINIMUM AMPLIFIER GAIN MAXIMUM AMPLIFIER GAIN - AMPLIFIER GAIN (dB 5.0 (±0.5) TEMP = -40°C to 85° ...
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... CMX631A will require protection diodes at its signal inputs (+ and -). The breakdown voltage of the capacitors and the peak inverse voltage of the diodes must be sufficient to withstand the sum of the DC voltages plus all expected signal peaks. 1998 Consumer Microcircuits Limited DD Figure 7: Input Configurations +0 ...
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... When anti-alias capacitors are used, an allowance must be made for reduced gain at the SPM frequency (12kHz or 16kHz). The ‘Clock-Out’ Pin The Clock-Out pin is intended to drive the CMX631A Clock-In pin only not recommended that it be used to clock other devices within the host equipment. 1998 Consumer Microcircuits Limited 12kHz Mode = 52kHz 16kHz Mode = 69kHz ...
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... Total allowable device dissipation at T Derating above AMB Operating Temperature Storage Temperature 6.1.2 Operating Limits Correct Operation of the device outside these limits is not implied. Parameter Supply Voltage ( Operating Temperature Xtal/Clock Frequency 1998 Consumer Microcircuits Limited Min. Typ. Max. -0.3 7.0 -0.3 (V -30 30 -30 30 -20 20 Min. ...
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... 5.0V 0.5V DD Tone Operating Characteristics Signal-to-Noise Requirements Signal-to-Voice Requirements Signal-to-Voice Requirements Tone Follower Mode Response and De-Response Time Packet Mode Response and De-Response Time 1998 Consumer Microcircuits Limited , Noise Bandwidth = 50kHz RMS Notes 1 (below 12kHz) 1 (above 12kHz (below 16kHz) 1 (above 16kHz) ...
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... With SPM and voice signal amplitudes balanced. To avoid false de-responses due to saturation, the peak to peak voice+noise level at the output of the Input Amp (12/16kHz Filter Input) should be no greater than the dynamic range of the device. 7. Maximum voice frequencies = 3.4kHz. 8. Response, De-Response and Power-up Response timing. 1998 Consumer Microcircuits Limited 13 CMX631A D/631A/1 ...
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... Low Voltage SPM Detector 6.2 Packages The CMX631A is available in the following packages. Additional package styles may be available to meet specific design requirements. Figure 8: 24-pin SSOP Mechanical Outline: order as part no. CMX631AD5 Figure 9: 16-pin SOIC Mechanical Outline: order as part no. CMX631AD4 1998 Consumer Microcircuits Limited 14 CMX631A D/631A/1 ...
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... Low Voltage SPM Detector Figure 10: 16-pin PDIP Mechanical Outline: order as part no. CMX631AP3 Handling precautions: This product includes input protection, however, precautions should be taken to prevent device damage from electro-static discharge. CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied ...
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... CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. ...