TEA1068T Philips Semiconductors, TEA1068T Datasheet - Page 13

• Manufacturer Part Number: TEA1068T
• Description: Versatile telephone transmission circuit with dialler interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1996 Apr 23
Versatile telephone transmission circuit
with dialler interface
Curve (1) is valid when the receiving amplifier is not driven or when MUTE = HIGH. Curve (2) is valid when MUTE = LOW and the receiving amplifier
is driven; V
The supply possibilities can be increased simply by setting the voltage drop over the circuit V
between REG and SLPE.
(1) May be connected to decrease the terminating impedance.
handbook, full pagewidth
a. Magnetic or dynamic
o(rms)
microphone.
= 150 mV; R
Fig.10 Typical current I
(1)
MIC
MIC
L
= 150
handbook, halfpage
asymmetrical.
(mA)
Fig.11 Alternative microphone arrangements.
I p
3
2
1
0
0
p
available from V
b. Electret microphone.
(1)
(2)
(3)
(4)
1
13
CC
2
for peripheral circuitry with V
MIC
MIC
V CC
V EE
3
V CC (V)
LN
MBH124
to a higher value by means of resistor R
4
c. Piezoelectric microphone.
CC
2.2 V.
Product specification
MIC
MIC
MBH135
TEA1068
VA
connected