TECHNICAL DATA
DTMF RECEIVER
High-Performance Silicon-Gate CMOS
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 dial-
tone 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.
IL9270
D SUFFIX
SOIC
ORDERING INFORMATION
IL9270N/D
T
A
= -10° to 70° C
LOGIC DIAGRAM
PIN ASSIGNMENT
*
Connect to GND
PIN 9 = GND
PIN 18 = V
CC
PINS 5,6 = NO CONNECTION
INTEGRAL [ INTEGRAL CORP. ]
