Low Voltage SPM Detector
7
MX631
Characteristics Notes
1.
2.
3.
4.
5.
6.
With adherence to Signal-to-Voice and Signal-to Noise specifications.
With Input Amp gain setting: 15.5dB
MIN
/19.5dB
MAX
.
Common Mode SPM and balanced voice signal.
Immune to false responses.
Immune to false de-responses
With SPM and voice signal amplitudes balanced; To avoid false de-responses due to saturation, the
peak-to-peak voice+noise level at the output of the Input Amp (12/16kHz Filter Input) should be no
greater than the dynamic range of the device.
Maximum voice frequencies = 3.4kHz
Response, De-Response and Power-up Response Timing.
7.
8.
Application Information ......
12.00kHz
11.52kHz
11.82kHz
12.18kHz
12.48kHz
15.36kHz
16.00kHz
15.76kHz
16.24kHz
16.64kHz
WILL-NOT DECODE
FREQUENCIES
WILL-NOT DECODE
FREQUENCIES
WILL-NOT DECODE
FREQUENCIES
WILL-NOT DECODE
FREQUENCIES
FREQUENCIES
F
0
- 4%
F
0
- 1.5%
F
0
F
0
+ 1.5%
F
0
+ 4%
F
0
- 4%
F
0
- 1.5%
F
0
FREQUENCIES
F
0
+ 1.5%
WILL-DECODE
WILL-DECODE
F
0
+ 4%
Figure 5 - Will/Will-Not Decode Frequencies
System Timing
SIGNAL INPUT
TONE
NOTONE
TONE FOLLOWER OUTPUT
PACKET MODE OUTPUT
RESPONSE
DELAY
SIGNAL INPUT ......
TONE FOLLOWER OUTPUT ......
DERESPONSE
DELAY
PACKET MODE OUTPUT ......
Figure 6 - Examples of Input and Output Relationships
© 1997 MX•COM, INC.
www.mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
Doc.# 20480087.003
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