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PDF FX633 Data sheet ( Hoja de datos )
| Número de pieza | FX633 | |
| Descripción | Call Progress Tone Detector | |
| Fabricantes | ETC | |
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1.0 Features
CML Semiconductor Products
Call Progress Tone Detector FX633
D/633/3 March 1996
Provisional Issue
• Worldwide Tone Compatibility
• Single and Dual Tones Detected
• Special US Busy-Detect Output
• Special Voice-Detect Output
• Wide Dynamic Signal Range
• Low Voltage Operation
• Standard 8-Pin DIP Package
• Standard 3.58MHz Xtal
1.1 Brief Description
The FX633 detects the audible tone signals used by most of the world's Telecom Systems to indicate
Dial, Ringing, Busy and other conditions found when placing a call. Detection of these call progress
stages is essential to the proper operation of automatic calling products.
The FX633 adds new features to Call Progress monitoring. It detects and indicates separately the "US
Busy" tones, reducing the need to measure "tone cadence" to identify "US Busy". It detects and
separately indicates "Voice" and other signals from Call Progress tones, reducing voice-falsing and
adding voice-answer as a connection prompt.
The FX633 uses the latest signal processing techniques to provide these advantages. It is a low cost,
low power product with superior performance. It is available in the industry standard package.
© 1996 Consumer Microcircuits Limited
1 page  
Call Progress Tone Detector
1.4 External Components
FX633
Typical Values:
R1 1MΩ ± 10%
C1 33pF ± 20%
C2 33pF ± 20%
C3 1nF ± 20% at 5V, 560pF ± 20% at 3.3V.
C4 0.1µF ± 20%
X1 3.579545MHz (refer to Section 1.7.1)
Figure 2 Recommended External Components
© 1996 Consumer Microcircuits Limited
5
D/633/3
5 Page 
Call Progress Tone Detector
1.7.1 Electrical Performance (continued)
FX633
Figure 5 Timing Diagram: Call Progress Tone(s) to Non Call Progress Signal
For the following conditions unless otherwise specified:
Xtal Frequency = 3.579545MHz, VDD = 3.3V to 5.0V, Tamb = - 40°C to +85°C, S/N = 20dB.
Signal Timings (ref. Figures 3, 4 and 5)
tI Burst Length Ignored
tL Burst Length Detected
tGI Call Progress Tone Gap Length Ignored
tGD Call Progress Tone Gap Length Detected
tRP
tDRP
tGDR
tNG
Call Progress Tone Response Time
Call Progress Tone De-response Time
Gap Detected Recorded
Non Call Progress Signal Gap Length Ignored
tNRP
tDNRP
tCH
Non Call Progress Signal Response Time
Non Call Progress signal De-response Time
State Change
Notes Min. Typ. Max. Units
70 ms
145 ms
7 20 ms
7 40
ms
145 ms
145 ms
86
ms
9 80 ms
145 ms
80 ms
0 ms
Notes:
7. Only applies to bursts of the same frequency.
8. To acknowledge a short tone gap ≥ 40 ms, No Signal is indicated for a minimum of 6ms.
9. If the gap > 90 ms, a No Signal state will be decoded.
© 1996 Consumer Microcircuits Limited
11
D/633/3
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FX633.PDF ] | |
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