Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064B
PINNING
SYMBOL
LN
GAS1
GAS2
QR−
QR+
GAR
DLS/MMUTE
MIC−
MIC+
STAB
VEE1
DTMF
IR
MUTE
PD
VCC
REG
AGC
VEE2
SLPE
PIN
DESCRIPTION
1 positive line terminal
2 gain adjustment; transmitting amplifier
3 gain adjustment; transmitting amplifier
4 inverting output; receiving amplifier
5 non-inverting output; receiving amplifier
6 gain adjustment; receiving amplifier
7 decoupling for transmit amplifier dynamic and microphone MUTE input
8 inverting microphone input
9 non-inverting microphone input
10 current stabilizer
11 negative line terminal
12 dual-tone multi-frequency input
13 receiving amplifier input
14 mute input
15 power-down input
16 internal supply decoupling
17 voltage regulator decoupling
18 automatic gain control input
19 reference for POWER-DOWN (PD), MUTE and DTMF
20 slope adjustment for DC curve/reference for peripheral circuits
March 1994
handbook, halfpage
LN 1
20 SLPE
GAS1 2
GAS2 3
19 VEE2
18 AGC
QR− 4
17 REG
QR+ 5
16 VCC
TEA1064B
GAR 6
15 PD
DLS/MMUTE 7
14 MUTE
MIC− 8
13 IR
MIC+ 9
12 DTMF
STAB 10
11 VEE1
MBA433
Fig.2 Pin configuration.
5