© 1997 MX•COM, INC.

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

Doc.# 20480087.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

All trademarks and service marks are held by their respective companies

Low Voltage SPM Detector

6

MX631

Characteristics

See Note

Min.

Typ.

Max.

Unit

Supply Voltage (V

3.0

-

5.5

V

Supply Current

-

-

1.0

mA

Input Logic “1”

(High)

2.3

-

-

V

Input Logic “0”

(Low)

-

-

1.0

V

Output Logic “1”

(High)

2.9

-

-

V

Output Logic “0”

(Low)

-

-

0.4

V

Xtal/Clock or Clock In Frequency

3.558918

-

3.589368

MHz

“High” External Clock Pulse Width

0.1

-

-

µs

“Low” External Clock Pulse Width

0.1

-

-

µs

Input Amp

D.C. Gain

60.0

-

-

dB

Bandwidth (-3dB open loop)

-

100

-

Hz

Input Impedance

-

1.0

-

M

Ω

Logic Impedances

Input (System)

0.7

-

3.8

M

Ω

(Clock In)

10.0

-

-

M

Ω

Output

-

14.0

30.0

k

Ω

Overall Performance

12kHz Detect Bandwidth

1

11.820

12.180

kHz

12kHz Not-Detect Frequencies (below 12kHz)

1

-

-

11.520

kHz

12kHz Not-Detect Frequencies (above 12kHz) 1

12.480

-

-

kHz

16kHz Detect Bandwidth

1

15.760

16.240

kHz

16kHz Not-Detect Frequencies (below 16kHz)

1

-

-

15.360

kHz

16kHz Not-Detect Frequencies (above 12kHz) 1

16.640

-

-

kHz

Sensitivity

2

7.8

10.0

15.5

mVp-p

Tone Operation Characteristics

Signal-to-Noise Requirements (Amp Input)

3,4,5,6

22.0

20.0

-

dB

Signal-to-Voice Requirements (Amp Input)

3,4,5,7

-36.0

-40.0

-

dB

Signal-to-Voice Requirements (Amp Output)

5,6

-25.0

-

-29.0

dB

Tone Follower Output

Response and De-Response Times

1,8

-

-

10.0

ms

Packet Mode Output

Response and De-Response Times

1,8

40.0

-

48.0

ms

Specifications

Absolute Maximum Ratings

Exceeding the maximum rating can result in device

damage. Operation of the device outside the operat-

ing limits is not implied.

Supply voltage

-0.3 to 7.0V

Input voltage at any pin

(ref V

-0.3 to (V

Sink/source current (supply pins)

±30mA

(other pins)

±20mA

Total device dissipation

@ T

800mW Max.

Derating

10mW/°C

Operating Temperature

-40°C to +85°C

Storage temperature range

-40°C to +85°C

Operating Limits

All device characteristics are measured under the

following conditions unless otherwise specified:

V

T

Audio Level 0dB ref: = 775mVrms

Noise Bandwidth = 50kHz

Xtal/Clock or ‘Clock In’ Frequency = 3.579545MHz

12kHz or 16kHz System Setting