IN9270 - DTMF RECEIVER

Integral

General Description

Early steering output.

Presents a logic high immediately when the digital algorithm detects a recognizable tone-pair (signal condition).

Any momentary loss of signal condition will cause ESt to return to a logic low.

Key Features

Test Conditions VOUT.

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IN9270 dtmf receiver by Integral - Datasheet Preview

Datasheet Details

Part number	IN9270
Manufacturer	Integral
File Size	394.32 KB
Description	DTMF RECEIVER
Datasheet	IN9270 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TECHNICAL DATA IN9270 DTMF RECEIVER High-Performance Silicon-Gate CMOS The IN9270 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high- and low-group filters and dialtone rejection. Digital counting techniques are employed in the decoder to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimized by on-chip provision of a differential input amplifier, clock-oscillator and latched 3-state bus interface. • Complete receiver in an 18-pin package. • Excellent performance. • CMOS, single 5 volt operation. • Minimum board area. • Central office quality. • Low power consumption.