cf8224c Nippon Precision Circuits Inc, (NPC), cf8224c Datasheet
cf8224c
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cf8224c Summary of contents
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... Adapters for pre- and mid-conversation informa- I tion service functions Telephone answering machines I Facsimile machines I Computer peripheral equipment I ORDERING INFORMATION Device SM8224CM CF8224C PINOUT (Top view) AGND OSCIN OSCOUT MODE DOUT PACKAGE DIMENSIONS (Unit: mm) Package 20-pin SSOP Chip form 0.68 ± ...
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PAD LAYOUT (Unit: µ m) OSCIN OSCOUT MODE PAD NAME and DIMENSIONS Pad number SM8224C TIP AGND DT1 DT2 2 ...
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BLOCK DIAGRAM TIP RING TRQ DT1 DT2 DTQ Filter AGND Bias Circuit Crystal Oscillator Circuit OSCIN OSCOUT SM8224C FSK Filter Demodulator Carrier Detector Detector Filter Circuit (2130Hz) (2130Hz) Level Detector Detector Filter Circuit (2750Hz) (2750Hz) Level Detector Power-down Circuit MODE ...
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PIN DESCRIPTION Number Name I/O 1 AGND O Reference voltage output. Internal reference voltage (V 2 TIP I Tip input. Connected to the telephone line through a protection circuit 3 RING I Ring input. Connected to the telephone line through ...
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SPECIFICATIONS Absolute Maximum Ratings GND = 0V Parameter Symbol Supply voltage range V DD Input voltage range V IN Power dissipation P Storage temperature range T stg Recommended Operating Conditions GND = 0V Parameter Symbol Supply voltage V DD Clock ...
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AC Electrical Characteristics Measurement conditions 430k Ω 34k Ω 390k Ω , C1= 0.22 µ F FSK decoder V = 2.7 to 5.5V, GND = 0V CLK Parameter Input sensitivity ...
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Timing Characteristics FSK decoder V = 2.7 to 5.5V, GND = 0V CLK Parameter Power-down release to start-up time Carrier detection ON time Final data to carrier detection OFF time Output timing V = 2.7 to 5.5V, GND ...
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TIMING DIAGRAMS FSK demodulator timing 1st Ring L1/L2 PDWN CDET DOUT OSCOUT PDWN is an internal signal (set by S0, S1, MODE) Output timing DOUT DOUT STR STR Data timing STOP TIP/RING IDD DOUT b4 b5 ...
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FUNCTIONAL DESCRIPTION The SM8224C receiver with caller ID service conforms to the Bellcore standards. It incorporates FSK demod- ulator and dual-tone detection functions in a single chip. It has a dedicated dual-tone signal input so that the FSK signal input ...
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TYPICAL APPLICATION CIRCUIT Speech Network Circuit VDD Protection Circuit VDD Circuit values are preliminary. SM8224C ...
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Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on ...