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IL9270

IK Semiconductor
Part Number IL9270
Manufacturer IK Semiconductor
Description DTMF Receiver
Published Dec 20, 2005
Detailed Description TECHNICAL DATA DTMF RECEIVER High-Performance Silicon-Gate CMOS IL9270 The IL9270N/D is a complete DTMF receiver inte...
Datasheet PDF File IL9270 PDF File

IL9270
IL9270

Overview
TECHNICAL DATA DTMF RECEIVER High-Performance Silicon-Gate CMOS IL9270 The IL9270N/D 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.
D SUFFIX SOIC ORDERING INFORMATION IL9270N/D TA = -10° to 70° C LOGIC DIAGRAM PIN ASSIGNMENT PIN 9 = GND PIN 18 = VCC PINS 5,6 = NO CONNECTION * Connect to GND IL9270 PIN DESCRIPTIONS NAME PIN ESt 16 GS IC IN+ INC1 C2 Q1-Q4 StD 3 5,6 1 2 7 8...


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