MT88L70AS1 datasheet(7/16 Pages) ZARLINK

Part #	MT88L70AS1

Description	3 Volt Integrated DTMF Receiver

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Manufacturer	ZARLINK [Zarlink Semiconductor Inc]

Direct Link	http://www.zarlink.com

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MT88L70

Data Sheet

7

Zarlink Semiconductor Inc.

Applications

A single-ended input configuration is shown in Figure 6. For applications with differential signal inputs the circuit

shown in Figure 5 may be used.

Figure 6 - Single-Ended Input Configuration

IN+

IN-

GS

VRef

INH

PDWN

OSC1

OSC2

VSS

VDD

St/GT

ESt

StD

Q4

Q3

Q2

Q1

TOE

DTMF

Input

C1

VDD

R1

R2

X-tal

MT88L70

C2

R3

NOTES:

R1, R2 = 100 kΩ ±1%

R3 = 300 kΩ ±1%

C1,C2 = 100 nF ±5%

X-tal = 3.579545 MHz

±0.1%

VDD = 3.0V + 20% / -10%

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