FX631 Datasheet, PDF (7/9 Pages) CML Microcircuits – Low-Voltage SPM Detector

Specification ......
Notes
1.
2.
3.
V_DD = 3.3V
V_DD = 5.0V
With adherence to Signal-to-Voice and Signal-to Noise specifications.
4. With Input Amp gain setting: 15.5dB /18.0dB .
MIN
MAX
5. Common Mode SPM and balanced voice signal.
6. Immune to false responses.
7. Immune to false de-responses
8. 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.
9. Maximum voice frequencies = 3.4kHz
10. Response, De-Response and Power-up Response Timing.
Application Information ......
11.52kHz
12.00kHz
11.82kHz
12.18kHz
12.48kHz
15.36kHz
16.00kHz
15.76kHz
16.24kHz
16.64kHz
F₀ - 4%
F₀ - 1.5% _F0 F₀ + 1.5%
F₀ + 4%
Fig.6 Will/Will-Not Decode Frequencies
System Timing
SIGNAL INPUT
TONE
NOTONE
F₀ - 4%
F₀ - 1.5% _F0 F₀ + 1.5%
F₀ + 4%
TONE FOLLOWER OUTPUT
PACKET MODE OUTPUT
RESPONSE
DELAY
SIGNAL INPUT ......
TONE FOLLOWER OUTPUT ......
PACKET MODE OUTPUT ......
Fig.7 Examples of Input and Output Relationships
7
DERESPONSE
DELAY