TEA1067/C2 Philips Semiconductors (Acquired by NXP), TEA1067/C2 Datasheet - Page 16

• Manufacturer Part Number: TEA1067/C2
• Description: TEA1067; Low Voltage Versatile Telephone Transmission Circuit With Dialler Interface;; Package: SOT102-1 (DIP18), SOT163 (SO20)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

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