TEA1066T Philips Semiconductors (Acquired by NXP), TEA1066T Datasheet - Page 4

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

Philips Semiconductors
PINNING
FUNCTIONAL DESCRIPTION
Supplies: V
Power for the TEA1066T and its peripheral circuits is
usually obtained from the telephone line. The TEA1066T
develops its own supply voltage at V
voltage drop. The supply voltage V
supply external peripheral circuits, e.g. dialling and control
circuits.
The supply has to be decoupled by connecting a
smoothing capacitor between V
voltage regulator has to be decoupled by a capacitor from
REG to V
resistor of 3.6 k between STAB and V
1996 Apr 04
SYMBOL
LN
GAS1
GAS2
QR
QR+
GAR
MICL
MICH
MICL+
MICH+
STAB
V
IR
PD
DTMF
MUTE
V
REG
AGC
SLPE
EE
CC
Versatile telephone transmission circuit
with dialler interface
EE
. An internal current stabilizer is set by a
CC
PIN
10
11
12
13
14
15
16
17
18
19
20
, LN, SLPE, REG and STAB
1
2
3
4
5
6
7
8
9
positive line terminal
gain adjustment transmitting
amplifier
gain adjustment transmitting
amplifier
inverting output receiving amplifier
non-inverting output receiving
amplifier
gain adjustment receiving amplifier
inverting microphone input, low
impedance
inverting microphone input, high
impedance
non-inverting microphone input, low
impedance
non-inverting microphone input,
high impedance
current stabilizer
negative line terminal
receiving amplifier input
power-down input
dual-tone multi-frequency input
mute input
supply voltage decoupling
voltage regulator decoupling
automatic gain control input
slope (DC resistance) adjustment
DESCRIPTION
CC
CC
and V
CC
may also be used to
and regulates its
EE
EE
.
; the internal
4
The DC current flowing into the set is determined by the
exchange supply voltage (V
resistance (R
(R
(see Fig.7).
If the line current I
required by the circuit itself (approximately 1 mA) plus the
current I
V
via LN.
handbook, halfpage
CC
line
, then the voltage regulator diverts the excess current
) and the DC voltage on the subscriber set
p
required by the peripheral circuits connected to
MICH
MICH
MICL
MICL
GAS1
GAS2
exch
GAR
QR
QR
LN
), the DC resistance of the telephone line
Fig.2 Pin configuration.
line
10
1
2
3
4
5
6
7
8
9
exceeds the current I
TEA1066T
exch
MBH120
), the feeding bridge
19
18
17
16
15
14
13
12
11
20
Product specification
REG
SLPE
AGC
V CC
MUTE
DTMF
PD
IR
V EE
STAB
TEA1066T
CC
+ 0.5 mA