Philips Semiconductors
Product specification
Low voltage versatile telephone
transmission circuit with dialler interface
TEA1067
R
I
handbook, full pagewidth
R1
line
line
I
+ 0.5 mA
I
SLPE
CC
I
p
LN
V
CC
TEA1067
R
exch
0.5 mA
DC
AC
peripheral
circuits
C1
V
exch
V
REG
STAB
SLPE
R9
EE
I
SLPE
C3
R5
MBH123
Fig.9 Supply arrangement.
MGR085
handbook, halfpage
2
a
I
P
(mA)
b
1
0
0
1
2
3
4
V
(V)
CC
Curve (a) is valid when the receiving amplifier is not driven or when MUTE = HIGH,
curve (b) is valid when MUTE = LOW and the receiving amplifier is driven;
Vo(rms) = 150 mV, RL = 150 Ω asymmetrical. The supply possibilities can be increased
simply by setting the voltage drop over the circuit VLN to a higher value by means of
resistor RVA connected between REG and SLPE.
(a) Ip = 1.8 mA
(b) Ip = 1.35 mA
Iline = 15 mA at VLN = 3.9 V
R1 = 620 Ω and R9 = 20 Ω.
Fig.10 Typical current Ip available from VCC for peripheral circuitry with VCC ≥ 2.2 V.
June 1990
15
NXP [ NXP ]
