1997 Sep 03 13
Philips Semiconductors Product specification
Low voltage transmission circuits with
dialler interface
TEA1062; TEA1062A
Reduction of gain
∆G
v
MIC+ or MIC− to LN
TEA1062 MUTE = HIGH − 70 − dB
TEA1062A
MUTE = LOW − 70 − dB
G
v
voltage gain from DTMF to QR R4 = 100 kΩ; R
L
= 300 Ω
TEA1062 MUTE = HIGH −−17 − dB
TEA1062A MUTE = LOW −−17 − dB
Automatic gain control input AGC (pin 15)
∆G
v
controlling the gain from IR to QR
and the gain from MIC+, MIC− to LN
R6 = 110 kΩ
(between AGC and V
EE
)
I
line
=70mA
gain control range −−5.8 − dB
I
lineH
highest line current for maximum gain − 23 − mA
I
lineL
lowest line current for minimum gain − 61 − mA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Fig.9 Supply arrangement.
handbook, full pagewidth
MBA357 - 1
SLPESTABREG
V
EE
V
CC
LN
I
line
SLPE
I
AC
DC
peripheral
circuits
C1
0.5 mA
0.5 mA
SLPE
I
R
exch
V
exch
R
line R1
I
CC
I
p
C3 R5 R9
TEA1062
TEA1062A
