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

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Autocorrelating

Signal 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

• 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).