Tone Detector

12

MX105A PRELIMINARY INFORMATION

© 1997 MX•COM, INC.

www.mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054

Doc.# 20480133.003

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6.1.3 Operating Characteristics

For the following conditions unless otherwise specified:

Load resistance on decoder output = 20k

Ω.

Notes

Min.

Typ.

Max.

Units

Static Parameters

1.0

mA

Amplifier Input Impedance

160

200

k

Ω

Digital Output Impedance

500

1000

Ω

Analog Output Impedance

1000

1200

Ω

Dynamic Parameters

Input Signal

Frequency

40

20,000

Hz

Lowest Must Detect Level

1

30

Highest Will Not Detect Level

1

20

1, 2

30

790

dB

1, 2

20

250

dB

VCO

Frequency

3

120

120,000

Hz

Frequency Stability

100

ppm/°C

5000

ppm/V

BW Limiter

BW Range

2

10

Amplifier

Open Loop Gain

60

dB

GBWP

1.0

MHz

Closed Loop Gain

0

dB

Detect Commutating Filter

25

Operating Characteristics Notes:

mV

=

V

RMS

10

(dB/20)

TH

×

3. Observing pins 13, 14, or 15 (DW/J package) will cause a frequency shift due to additional loading. If tuning center

frequency by observing oscillator, design in a buffer amplifier between pin 15 and probe/calibration point and tune with

no input signal. Otherwise, tune by observing detect output band edges while sweeping input signal. VCO center