Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064B
CHARACTERISTICS
Iline = 11 to 140 mA; VEE1 = 0 V; f = 800 Hz; Tamb = 25 °C; RL = 600 Ω; tested in the circuits of Fig.20 or Fig.21; VEE2
connected to SLPE; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supplies LN and VCC (pins 1 and 16)
VLN
∆VLN/∆T
VLN
DC line voltage: voltage drop
between LN and VEE1
variation with temperature
voltage drop over circuit with RVA
connected between REG and SLPE
MIC−, MIC+ inputs
open-circuit;
without RVA
Iline = 2 mA
Iline = 4 mA
Iline = 7 mA
Iline = 11 mA
Iline = 15 mA
Iline = 100 mA
Iline = 140 mA
Iline = 15 mA
RVA = 33 kΩ
RVA = 20 kΩ
ICC
internal supply current into pin 16 VCC = 2.8 V
PD = LOW
PD = HIGH
VCC
supply voltage available for
peripheral circuitry
VEE2 connected to VEE1
Vp
supply voltage available for
peripheral circuitry
Iline = 15 mA;
MUTE = HIGH;
see Fig.5
Ip = 0.54 mA
Ip = 0 mA
Iline = 15 mA
Ip = 1.4 mA
Ip = 2.7 mA;
RREG-SLPE = 20 kΩ
Microphone inputs MIC− and MIC+ (pins 8 and 9)
Zi
input impedance
differential
single-ended
CMRR
common mode rejection ratio
Gv
voltage gain (see Fig.20)
Iline = 15 mA;
R7 = 68 kΩ
∆Gvf
variation of Gv with frequency
referred to 0.8 kHz
f = 300 and 3400 Hz
−
−
−
−
3.25
−
−
−3
3.8
4.05
−
−
2.2
2.5
2.5
2.9
51
25.5
−
51
−0.5
1.8
−
2.2
−
3.2
−
3.4
−
3.5
3.75
5.25
6.05
6.1
7.0
−1
+1
4.1
4.4
4.4
4.75
1.3
1.6
60
82
2.4
−
2.7
−
2.7
−
3.1
−
64
77
32.0
38.5
82
−
52
53
±0.1
+0.5
V
V
V
V
V
V
V
mV/K
V
V
mA
µA
V
V
V
V
kΩ
kΩ
dB
dB
dB
March 1994
19