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TEA1067/C2 View Datasheet(PDF) - Philips Electronics

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Description
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TEA1067/C2 Datasheet PDF : 28 Pages
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Philips Semiconductors
Low voltage versatile telephone
transmission circuit with dialler interface
Product specification
TEA1067
handbook, full pagewidth
MIC+
(1)
MIC
(a)
MICVCC
MIC+
VEE
(b)
(a) Magnetic or dynamic microphone. The resistor marked (1) may be connected to decrease
the terminating impedance.
(b) Electret microphone.
(c) Piezoelectric microphone.
Fig.11 Alternative microphone arrangements.
MIC+
MIC
MGR086
(c)
handbook, full pagewidth
QR+
QR
VEE
(a)
QR+
QR
(b)
(1)
QR+
QR
(c)
(2)
QR+
QR
(d)
MGR087
(a) Dynamic earpiece with less than 450 impedance.
(b) Dynamic earpiece with more than 450 impedance.
(c) Magnetic earpiece with more than 450 impedance. The resistor marked (1) may be connected
to prevent distortion (inductive load).
(d) Piezoelectric earpiece. The resistor marked (2) is required to increase the phase margin
(capacitive load).
Fig.12 Alternative receiver arrangements.
June 1990
16
 

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