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DATA BULLETIN

MX102

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 companies.

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

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

BIAS

AUTOCORRELATION

PROCESS

OUTPUT

SIGNAL

IN]

Output

CLOCKS

XTAL

XTAL/CLOCK

GENERATOR/

DIVIDER

DELAY

48-BIT

COMPARE

LOGIC

DELAY

48-BIT

INTERPOLATE

OUTPUT

LOGIC

DELAY

24-BIT

COMPARE

LOGIC

DELAY

24-BIT

XTAL/CLOCK

CLOCK

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

MX102

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 companies.

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

MX102

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 companies.

1. Block Diagram

SIGNAL

BIAS

AUTOCORRELATION

PROCESS

OUTPUT

SIGNAL

IN]

Output

CLOCKS

XTAL

XTAL/CLOCK

GENERATOR/

DIVIDER

DELAY

48-BIT

COMPARE

LOGIC

DELAY

48-BIT

INTERPOLATE

OUTPUT

LOGIC

DELAY

24-BIT

COMPARE

LOGIC

DELAY

24-BIT

XTAL/CLOCK

CLOCK

BUFCLK

Figure 1: Device Block Diagram

Autocorrelating Signal Processor

MX102

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 companies.

2. Signal List

Packages

Signal

Description

DW/J

Name

Type

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

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

Ω

. See Figure 2.

power

Positive supply rail. A single, stable power supply is required. Note that

this device has two V

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

pin.

BUFCLK

output

Buffered inverter oscillator digital output. May be used as test point to

align clock frequency or to drive other circuitry.

XTAL

output

The output of the on-chip clock oscillator inverter.

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

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.

power

Negative Supply

CLK ÷ 6

output

A squarewave output clock signal at the rate of Clock/6; provided for

peripheral and test purposes.

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).

power

Positive supply rail. A single, stable power supply is required.

Note that this device has two V

pins; either or both may be connected

to the host circuit's supply line. Do not attempt to draw current from either

pin.

The choice of V

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

MX102

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 companies.

(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

SIGNAL

BUFCLK

SIGNAL

INPUT

OUTPUT

SIGNAL

IN)

SIGNAL

BIAS

CLOCK

OUTPUT

MX102

XTAL

XTAL/CLOCK

XTAL

XTAL/CLOCK

Figure 2: Recommended External Components

2.2M

Ω

1.0M

Ω

0.01µF

Note 1

47.0pF -see below

Note 1

47.0pF -see below

Note 2

5 - 65pF -see below

1.0µF

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

2. C4 is suggested for frequency setting when using a resonator; when a Xtal is used C4 is omitted.

Autocorrelating Signal Processor

MX102

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 companies.

4. General Description

4.1 Signal

SIGNAL IN

OUT

= 4 x f

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.

105

100

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

MX102

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 companies.

2000

4000

6000

8000

10000

12000

14000

Maximum Input Frequency (Hz)

Minimum Input Frequency (Hz)

Input Signal Bandwidth (Hz)

Maximum Clock Limit

at V

= 2.5V

Maximum Clock Limit

at V

= 3.0V

For V

= 5.0V

Input

Signal

Frequency

(Hz)

Xtal/Clock Frequency (kHz)

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

= 5.0V

Input Signal-to-Noise Ratio (dB)

-6

-5

-4

-3

-2

-1

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

MX102

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 companies.

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

Input Voltage at any pin

-0.3

+0.3 volts)

Current

-30

Any other pins

-20

Maximum Device Dissipation

100

Operating Temperature

-40°

°C

Storage Temperature

-40°

125

°C

Operating Limits

Correct operation of the device outside these limits is not implied.

Min.

Typ.

Max.

Units

2.5

3.3/5.0

5.5

Xtal/Clock

2500

kHz

Operating Temperature

-40

°C

Autocorrelating Signal Processor

MX102

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 companies.

Operating Characteristics

For the following conditions unless otherwise specified:

= 5.0V, T

AMB

= 25°C

Xtal/Clock = 560kHz, Input Test Signal = 200mV

RMS

Notes

Min.

Typ.

Max

Units

Static Values

Supply Current

1.0

2.5

4.0

Logic ‘1’ Level

80%

Logic ‘0’ Level

20%

Digital Output Impedance

4.0

10.0

Ω

Dynamic Values

Signal Input

20.0

1000

RMS

Analog (Input) Amplifier Gain

20.0

9.0

10.0

Recommended Input Signal Duty Cycle Ratio

Frequency Out/Frequency In Ratio

4.0

Maximum Xtal/Clock Frequency

2.5

MHz

Minimum Xtal/Clock Frequency

20.0

kHz

Frequency Input Range

Xtal/Clock = 560kHz

500

3000

Table 4

1/1200

1/190

Xtal/Clock

Input to Output Delay

1.4

Output resolution

1/6

Xtal/Clock

Operating Characteristics Notes:

1. Maximum Xtal/clock frquency allowed varies with applied supply voltage (V

2. I

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

= 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

MX102

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 companies.

5.2 Packaging

PIN 1

ALTERNATIVE

PIN

LOCATION

MARKING

NOTE : All dimensions in inches (mm.)

Angles are in degrees

Package Tolerances

TYP.

MAX.

MIN.

DIM.

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)

5°

Figure 6: 16-pin SOIC Mechanical Outline:

Order as part no. MX102DW

PIN 1

Package Tolerances

NOTE : All dimensions in inches (mm.)

Angles are in degrees

TYP.

MAX.

MIN.

DIM.

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)

0.753 (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