Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064A
PARAMETER
Output voltage (RMS value)
Noise output voltage (RMS value)
Noise output voltage (RMS value)
Gain adjustment input GAR (pin 6)
Receiving amplifier,
gain adjustment range
MUTE INPUT (pin 14)
Input voltage HIGH
Input voltage LOW
Input current
Change of microphone amplifier
gain at mute-ON
CONDITIONS
Ip = 0 mA;
THD = 10%;
sinewave drive;
R4 = 100 kΩ;
single-ended;
RT = 150 Ω;
Iline = 4 mA
Iline = 7 mA
Iline = 15 mA;
R4 = 100 kΩ;
psophometrically
weighted
(P53 curve);
pin IR open
single-ended;
RT = 300 Ω;
differential;
RT = 600 Ω
in circuit of Fig.23;
S1 in position 2;
200 Ω between
MIC+ and MIC−;
single-ended;
RT = 300 Ω
R7 = 68 kΩ
R7 = 24.9 kΩ
SYMBOL MIN. TYP. MAX. UNIT
Vo(rms)
Vo(rms)
−
25
−
mV
−
160 −
mV
Vno(rms)
Vno(rms)
−
45
−
µV
−
90
−
µV
Vno(rms)
Vno(rms)
−
100 −
µV
−
65
−
µV
MUTE = HIGH
∆Gv
VIH
VIL
Imute
−∆Gv
−11 −
+8
dB
1.5 +
VSLPE
−
0
−
−
11
VCC1
+ 0.4
V
0.3 +
VSLPE
V
20
µA
−
100 −
dB
March 1994
22