MX651P 查看數據表（PDF） - MX-COM Inc
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MX651P Datasheet PDF : 13 Pages
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Telephone SPM and Anti Fraud Tone Processor
10
MX651 - PRELIMINARY INFORMATION
18kHz (Security Tone) Channel Performance
With Interfering Speech & SPM Tone
Input Signal Level
Decode Min Signal Level
No Decode Max Signal Level
Response/De-response Times
Detect Bandwidth
Not Detect Frequencies (below 18kHz)
Not Detect Frequencies (above 18kHz)
Notes
14
15
15
15
15
15, 16
15
15
15
Min.
10
16.92
19.75
Typ.
Max.
1.2
40
8
19.08
16.25
Units
V
mV
mV
ms
kHz
kHz
kHz
Operating Characteristics Notes:
1. At VDD = 5.0V only, IDD specification does not include any current drawn from the device pins by external circuitry.
2. At VDD = 3.3V only, IDD specification does not include any current drawn from the device pins by external circuitry.
3. CLKIN input signal may be sinusoidal.
4. Small signal impedance.
5. At output of smoothing network.
6. VDD = 5.0V.
7. VDD = 3.3V.
8. The time between a logic 1 - 0 transition at NRZ data input and the tone amplitude at TXOUT reaching 10% of its
full value or between a 0 - 1 transition at NRZ data input and the tone amplitude falling to 90% of its full value.
9. The time for the 18kHz tone amplitude at TXOUT to rise from 10% to 90% or to fall from 90% to 10% of its full
value.
10. Input amplifier signal gain set to -10dB for VDD = 5.0V, -13dB for VDD = 3.3V.
11. Maximum 10% distortion for incoming SPM tone, not including interfering speech or security tone (16kHz - 20kHz).
Minimum SNR 22dB for incoming SPM tone before the input capacitor.
12. Signal levels at the amplifier input, i.e. before the input capacitor. 12kHz channel performance specified in the
presence of the following interfering signals:
(a) A 1.2V continuous tone in the frequency range 16kHz - 20kHz
(b) An ordinary speech signal containing frequencies in the range 300Hz - 3400Hz of maximum instantaneous
amplitude 8.0VP-P
13. The device responds after 40-50ms of continuous valid tone and de-responds after: a 40-50ms period of no-tone,
tones less than 25mV or an out of band tone.
14. Maximum 10% distortion for incoming security tone, not including interfering SPM tone (11kHz - 13kHz). Minimum
20dB SNR for incoming security tone.
15. Signal level specified at the amplifier input, i.e. before the input capacitor. Performance specified in the presence
of an interfering 800mV continuous tone in the frequency range 11kHz - 13kHz.
16. The device responds after 8ms of continuous valid tone and de-responds after any of: an 8ms period of no-tone,
tone of 10mV or less, or an out of band tone.
© 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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