data bulletin MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. autocorrelating si g nal processor features applications low signal level input of 10mvrms wide signal frequency range from 17hz to 13khz on-chip gain amplifier digital output signal (f in x 4) divided-down clock output low supply voltage operation of 2.5 v low current drain medical instruments sonar detection remote signaling pagers mobile radio slow data rate communication tone detection signal in signal bias autocorrelation process output [4 x signal in] output clocks xtal v dd v ss xtal/clock generator/ divider - + delay 48-bit compare logic delay 48-bit interpolate interpolate output logic delay 24-bit compare logic delay 24-bit xtal/clock clock 6 bufclk the MX102 is a single-chip device to extract single periodic signals from very high random-noise environments. using patented autocorrelation techniques the MX102 will enhance the input signal's signal-to-noise ratio by as much as 8.5db and provide a digital output signal centered at four times (x4) the input frequency. the amplitude of non-periodic components of the signal is substantially reduced. the patented autocorrelator compares the incoming signal to itself; the more elements of the waveform that are seen as periodic, the higher the energy at the microcircuit output. the MX102 cascades two autocorrelators, each one improving the signal-to-noise ratio with a random noise input the output will swing rail-to-rail at random (peak-limited). the input/output signal delay is fixed by the choice of clock frequency and the length of the internal register. the MX102 will operate at supply voltages of between 2.5 volts and 5.5 volts and with xtal/clock frequencies from 20khz to 2.5mhz. using various xtal/clock inputs the device can be set to accept input signal frequencies, in bands, from 17.0hz to 13.0khz. two uncommitted clock outputs are available: one to supply a 'divided-down' xtal/clock frequencies and the second is a buffered output for use in external and peripheral functions. this MX102 is available in the following package styles: 16-pin soic (MX102dw) and 16-pin cdip (MX102j).
autocorrelating signal processor 2 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. contents section page 1. block diagram ............................................................................................................... ................... 3 2. signal list ................................................................................................................. ........................ 4 3. external components ......................................................................................................... ............. 5 4. general description ......................................................................................................... ................ 6 4.1 signal ..................................................................................................................... ................................... 6 4.2 input frequency range...................................................................................................... ....................... 6 5. performance specification................................................................................................... ........... 8 5.1 electrical performance ..................................................................................................... ......................... 8 5.2 packaging .................................................................................................................. .............................. 10 mx?com, inc. reserves the right to change specifications at any time and without notice.
autocorrelating signal processor 3 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 1. block diagram signal in signal bias autocorrelation process output [4 x signal in] output clocks xtal v dd v ss xtal/clock generator/ divider - + delay 48-bit compare logic delay 48-bit interpolate interpolate output logic delay 24-bit compare logic delay 24-bit xtal/clock clock 6 bufclk figure 1: device block diagram
autocorrelating signal processor 4 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 2. signal list packages signal description dw/j name type 1 signal in input the inverting input to the analog amplifier/comparator. used with the signal bias pin; external coupling components are required. see figure 2 3 signal bias output the output of the analogue amplifier/comparator. do not load this pin with peripheral circuitry; there is no drive capacity for off-chip signaling. the feedback resistor should be not less than 200k w . see figure 2. 4v dd power positive supply rail. a single, stable power supply is required. note that this device has two v dd pins; this input is positioned to prevent cross-talk, either or both may be connected to the host circuit's supply line. do not attempt to draw current from either v dd pin. 5 bufclk output buffered inverter oscillator digital output. may be used as test point to align clock frequency or to drive other circuitry. 6 xtal output the output of the on-chip clock oscillator inverter. 8 xtal/clock input the input to the on-chip clock oscillator inverter; this may be a xtal, resonator or clock pulse input. the selection of this frequency will affect the operational input signal bandwidth (and output frequency) of this device; refer to table 4. note that the choice of v dd will determine the maximum xtal/clock frequency and hence the maximum useable signal input frequency. operation of this microcircuit without an active xtal or clock input may cause device damage. a clock pulse input is fed directly into this pin; xtal/clock components are not required. see table 2. 9v ss power negative supply 11 clk 6 output a squarewave output clock signal at the rate of clock/6; provided for peripheral and test purposes. 13 output output (fout = 4 x fsignal in). the auto-correlated output signal at four times (x 4) the input signal (see figure 3). there is a time delay between input and output signals (see specifications). 16 v dd power positive supply rail. a single, stable power supply is required. note that this device has two v dd pins; either or both may be connected to the host circuit's supply line. do not attempt to draw current from either v dd pin. the choice of v dd will determine the maximum xtal/clock frequency and hence the maximum useable signal input frequency (see figure 4). 2, 7, 10, 12, 14, 15 n/c no internal connection. leave open circuit table 1: signal list
autocorrelating signal processor 5 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. v dd (v) max. xtal/clock freq. (mhz) 2.5 0.625 3.0 1.0 5.0 2.5 table 2: maximum usable xtal/clock frequencies 3. external components v dd v v dd v dd c5 r1 c1 v ss 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 signal in bufclk signal input output (f = 4 x signal in) x x x x x x signal bias clock output 6 MX102 xtal xtal/clock 6 8 c3 c2 c4 x 1 r2 xtal xtal/clock figure 2: recommended external components r1 2.2m w r2 1.0m w c1 0.01f c2 note 1 47.0pf -see below c3 note 1 47.0pf -see below c4 note 2 5 - 65pf -see below c5 1.0f x1 560khz resonator x1 range 20khz to 2.5mhz table 3: recommended external components recommended external component notes: 1. values of capacitors c2 and c3 should be reduced for higher xtal frequencies and/or lower supply voltages (v dd ). 2. c4 is suggested for frequency setting when using a resonator; when a xtal is used c4 is omitted.
autocorrelating signal processor 6 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 4. general description 4.1 signal f signal in f out =4xf signal in signal out frequency level signal in figure 3: MX102 input/output relationships note: 1. the frequency of the output signal is four times (x4) that of the input signal. 4.2 input frequency range the MX102 has a wide frequency range, but care must be taken to choose the xtal frequency appropriate for your application. xtal/clock frequency (khz) input freq. (hz) bw (hz) min. max. 20 17 105 88 100 88 526 443 200 166 1052 886 300 250 1579 1329 400 333 2105 1772 500 416 2632 2216 560 467 2947 2480 600 500 3158 2658 700 583 3684 3101 800 667 4210 3543 900 750 4737 3987 1000 833 5263 4430 2000 1667 10526 8859 2500 2083 13157 11074 table 4: input signal ranges vs xtal/clock frequency
autocorrelating signal processor 7 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 0 2000 4000 6000 8000 10000 12000 14000 maximum input frequency (hz) minimum input frequency (hz) input signal bandwidth (hz) maximum clock limit at v dd =2.5v maximum clock limit at v dd =3.0v for v dd =5.0v input signal frequency (hz) xtal/clock frequency (khz) 0 500 1000 1500 2000 2500 minimum input frequency = xtal/clock frequency (hz) 1200 maximum input frequency = xtal/clock frequency (hz) 190 figure 4: input signal ranges vs xtal/clock frequency effective output signal-to-noise ratio (db) input signal = 2.7khz 20mvrms xtal/clock frequency 500khz v dd =5.0v input signal-to-noise ratio (db) 1 2 3 4 5 6 7 8 9 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 figure 5: enhancement of signal-to-noise ratio note: 1. the graph shown in figure 5 illustrates the signal-to-noise enhancement that can be obtained, under varying input conditions, from the MX102.
autocorrelating signal processor 8 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 5. performance specification 5.1 electrical performance absolute maximum ratings exceeding these maximum ratings can result in damage to the device. general min. max. units supply voltage -0.3 7.0 volts v input voltage at any pin -0.3 (v dd +0.3 volts) v current v dd -30 30 ma v ss -30 30 ma any other pins -20 20 ma maximum device dissipation 100 mw operating temperature -40 85 c storage temperature -40 125 c operating limits correct operation of the device outside these limits is not implied. min. typ. max. units v dd 2.5 3.3/5.0 5.5 v xtal/clock 20 2500 khz operating temperature -40 85 c
autocorrelating signal processor 9 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. operating characteristics for the following conditions unless otherwise specified: v dd = 5.0v, t amb = 25c xtal/clock = 560khz, input test signal = 200mv rms notes min. typ. max units static values supply current - 1.0 2.5 ma 2 - 4.0 - ma logic 1 level 80% - - v logic 0 level - - 20% v digital output impedance - 4.0 10.0 k w dynamic values signal input 3 20.0 - 1000 mv rms analog (input) amplifier gain 4 20.0 - - db 5 9.0 - - db 6 10.0 - - db recommended input signal duty cycle ratio 35 50 - % frequency out/frequency in ratio 4.0 - 4.0 % maximum xtal/clock frequency 1 2.5 - - mhz minimum xtal/clock frequency 20.0 khz frequency input range xtal/clock = 560khz 7 500 - 3000 hz table 4 1/1200 1/190 xtal/clock input to output delay 8 - 1.4 ms output resolution - 1/6 - xtal/clock operating characteristics notes: 1. maximum xtal/clock frquency allowed varies with applied supply voltage (v dd ). 2. i dd requirement for xtal/clock frequency of 2.24mhz. 3. signal input level required to provide a constant autocorrelated output. 4. measured with a 6.0khz sinewave at the signal input. 5. measured with v dd = 2.5 volts. 6. measured with a 12khz input signal. 7. recommended input signal frequency range to correlation circuits. 8. input (signal in) to output (output) time with a 2.24mhz xtal/clock input.
autocorrelating signal processor 10 MX102 ? 1997 mx?com,inc. www.mxcom.com tele: 800 638 5577 910 744 5050 fax: 910 744 5054 doc.# 20480095.003 4800 bethania station road, winston-salem, nc 27105-1201 usa all trademarks and service marks are held by their respective comp anies. 5.2 packaging pin 1 a b alternative pin location marking x p j y c k h e l t w z note : all dimensions in inches (mm.) angles are in degrees package tolerances a b c e h typ. max. min. dim. j p x w t y k l 0.105 (2.67) 0.093 (2.36) 0.419 (10.64) 45 7 0 10 0.050 (1.27) 0.041 (1.04) 0.413 (10.49) 0.299 (7.59) 0.050 (1.27) 0.016 (0.41) 0.390 (9.90) 0.020 (0.51) 0.003 (0.08) 0.009 (0.23) 0.0125 (0.32) 0.013 (0.33) 0.020 (0.51) 0.395 (10.03) 0.286 (7.26) z 5 5 figure 6: 16-pin soic mechanical outline: order as part no. MX102dw b a pin 1 e1 t e k h f j1 j p l c k1 package tolerances note : all dimensions in inches (mm.) angles are in degrees typ. max. min. a b c e e1 f h dim. j j1 p t k1 k l 0.230 (5.84) 0.291 (7.39) 0.415 (10.53) 0.200 (5.08) 0.767 (19.48) 0.165 (4.19) 0.100 (2.54) 0.115 (2.92) 0.370 (9.40) 0.300 (7.61) 0.317 (8.04) 0.70 (17.78) 0.018 (0.46) 0.053 (1.33) 0.075 (1.91) 0.080 (2.03) 0.080 (2.03) 0.753 (19.13) 0.285 (7.24) 0.0102 (0.259) 0.020 (0.51) 0.055 (1.39) 0.0098 (0.249) figure 7: 16-pin cdip mechanical outline: order as part no. MX102j
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