MX651P 查看數據表（PDF） - MX-COM Inc

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MX651P

Telephone Subscriber Pulse Metering & Anti Fraud Tone Processor

MX-COM Inc  

Telephone SPM and Anti Fraud Tone Processor

8

MX651 - PRELIMINARY INFORMATION

Note: A valid SPM input, in the range 11.82kHz - 12.18KHz, is met when; n = 1 and the nominal minus sign (-) detect

frequency is calculated. The other inputs represent false decodes. The response time and level sensitivity for a false

decode is the same as that for a valid decode, e.g. 42ms - 45ms of 5708Hz at 50mV could cause a false decode at the

"DETECT 12kHz" pin.

5.2.2 18kHz Channel

The 18kHz tone detector response frequencies are described by the following two equations:

sign

f 18kHz plus = [(n x 71.591kHz)

f 18kHz minus = [(n x 71.591kHz)

+ 18.0kHz]

− 18.0kHz]

± 1.08kHz

± 1.08kHz

nominal nominal

plus

minus

detect detect

frequency frequency

n

(kHz)

(kHz)

0

18

N/A

1

89.591 53.591

2

161.182 125.182

3

232.773 196.773

…

…

…

Note: A valid security tone input is met when, n = 0 and the nominal plus sign (+) detect frequency is calculated. The

other inputs represent false decodes. The response time and level sensitivity for a false decode is the same as that for a

valid decode, e.g. 5.8ms of 52.511kHz at 40mV could cause a false response at “DETECT18kHz” pin.

6. Performance Specifications

6.1 Electrical Performance

Absolute Maximum Ratings

Exceeding these maximum ratings can result in damage to the device. Correct operation of the device outside these

limits is not implied.

General

Supply (VDD - VSS)

Voltage on any pin (wrt VSS)

Current

VDD

VSS

Any other pins

DW / P Packages

Total Allowable Power Dissipation at TAMB = 25°C

Derating above 25°C

Operating Temperature

Storage Temperature

Min.

-0.3

-0.3

-30

-30

-20

-40

-55

Max.

7.0

VDD + 0.3

30

30

20

Units

V

V

mA

mA

mA

800

mW

13

mW/°C above 25°C

85

°C

125

°C

© 1997 MX•COM Inc.

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

Doc. # 20480137.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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