NE5900 Philipss, NE5900 Datasheet
NE5900
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NE5900 Summary of contents
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... Philips Semiconductors Call progress decoder DESCRIPTION The NE5900 call progress decoder (CPD low cost, low power CMOS integrated circuit designed to interface with a microprocessor-controlled smart telephone capable of making preprogrammed telephone calls. The call progress decoder information to permit microprocessor decisions whether to initiate, continue, or terminate calls ...
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... Includes Pin 3 — Ext Clock In 1986 May 8 ANALOG OUT 0V V REF 10k 10k DETECTOR DECODER TEST CLEAR COUNT IN DATA IN IN PROGRESS VALID Figure 2. NE5900 Block Diagram PARAMETER 2 Product specification NE5900 5V TRI-STATE ENABLE ENVELOPE BIT 1 TRI-STATE BIT 2 BIT 3 SR01143 RATING UNITS 9 V -0 ...
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... NOTE: 1. 0dB = 0.775V RMS 2. By design; not tested. The NE5900 uses the signal in the call progress tone passband and the cadence of interrupt rate of the signal to determine which call progress tone is present. Figure 3 shows a detailed block diagram of the NE5900. The signal input from the phone line is coupled through a 470k resistor which, together with two internal capacitors and an internal resistor, form an anti-aliasing filter ...
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... In such situations it is possible clear the NE5900 by application of the DTMF signal or dial pulses to the clear pin (Pin 6). When dialing is complete, the device is cleared 1 0 and ready to respond to the next call progress unit. ...
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... Figure 5. Typical Two-Wire Application 5 Product specification NE5900 ENVELOPE NE5900 5 12 BIT BIT BIT INTERRUPT START CLEAR SR01145 ENABLE 4 13 ENVELOPE NE5900 5 12 DECODED 6 11 OUTPUTS TO PROCESSOR INTERRUPT START CLEAR SR01146 ...
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... BIT 3 É É É É É É É É É É É É É É É COUNT IN PROGRESS É É É É É 1986 May 8 38ms TYPICAL 2.27 SECONDS 1.1 SECONDS 42ms TYPICAL Figure 6. 6 Product specification NE5900 SR01147 ...
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... DD 0 -20 -40 -60 5 SR01149 Figure 11. Filter Frequency Response -20 -25 -30 -35 -40 -45 -50 5 300 SR01150 Figure 12. Typical Threshold 7 Product specification NE5900 OUTPUT VOLTAGE (Pin 13) SR01151 100 1000 FREQUENCY (40 TO 4000Hz) SR01152 350 400 450 500 550 600 650 FREQUENCY (Hz) SR01153 ...