TEA1066T Philips Semiconductors (Acquired by NXP), TEA1066T Datasheet - Page 13

• Manufacturer Part Number: TEA1066T
• Description: Versatile Telephone Transmission Circuit With Dialer Interface
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
1996 Apr 04
handbook, full pagewidth
Versatile telephone transmission circuit
with dialler interface
Curves (1) and (3) are valid when the receiving amplifier is not driven or when MUTE = HIGH. Curves (2) and (4) are valid when MUTE = LOW and the
receiving amplifier is driven, V
(1) I
(2) I
(3) I
(4) I
(1) May be connected to lower the terminating impedance.
a. Magnetic or dynamic
Fig.8 Typical current I
p
p
p
p
= 2.55 mA.
= 2.1 mA.
= 1.2 mA.
= 0.75 mA.
microphone.
(1)
9
7
MICL
MICL
o(rms)
p
available from V
= 150 mV, R
handbook, halfpage
(mA)
I p
Fig.9 Alternative microphone arrangements.
3
2
1
0
L
0
= 150
b. Electret microphone.
CC
(1)
(2)
(3)
(4)
(asymmetrical). I
for external (peripheral) circuitry with V
1
10
13
8
2
line
MICH
MICH
= 15 mA; V
V CC
V EE
17
12
3
LN
V CC (V)
= 4.45 V; R1 = 620
MBH124
4
c. piezoelectric microphone.
CC
and R9 = 20 .
> 2.2 V and V
10
8
MICH
MICH
Product specification
MBH121
TEA1066T
CC
> 3 V.