TEA1068T Philips Semiconductors, TEA1068T Datasheet - Page 10

• Manufacturer Part Number: TEA1068T
• Description: Versatile telephone transmission circuit with dialler interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
CHARACTERISTICS
I
1996 Apr 23
line
Supplies: LN and V
V
V
I
V
Microphone inputs MIC+ and MIC
CMRR
G
Dual-tone multi-frequency input DTMF
G
Gain adjustment connections GAS1 and GAS2
CC
SYMBOL
Z
Z
V
G
G
G
G
G
LN
LN
CC
Versatile telephone transmission circuit
with dialler interface
v
v
i
i
LN
= 10 to 140 mA; V
vf
vT
vf
vT
v
/ T
voltage drop over circuit between
LN and V
voltage drop variation with
temperature
voltage drop over circuit, between
LN and V
R
supply current
supply voltage available for
peripheral circuitry
input impedance
common mode rejection ratio
voltage gain from MIC+/MIC to LN I
gain variation with frequency at
f = 300 Hz and f = 3400 Hz
gain variation with temperature at
input impedance
voltage gain from DTMF to LN
gain variation with frequency at
f = 300 Hz and f = 3400 Hz
gain variation with temperature at
T
gain variation with R7, transmitting
amplifier
25 C and +75 C
amb
VA
CC
25 C and +75 C
EE
EE
EE
PARAMETER
= 0 V; f = 800 Hz; T
with external resistor
amb
= 25 C; unless otherwise specified.
microphone inputs open
I
I
V
I
differential between
MIC+ and MIC
single-ended MIC+ or
MIC to V
with respect to 800 Hz
I
with respect to 25 C; without
R6
I
with respect to 800 Hz
I
with respect to 25 C
line
line
line
line
line
line
line
CC
I
I
I
I
R
R
PD = LOW
PD = HIGH
I
I
line
line
line
line
p
p
= 15 mA
= 15 mA
VA
VA
= 15 mA; MUTE = HIGH
= 15 mA; R7 = 68 k ;
= 50 mA;
= 15 mA; R7 = 68 k
= 50 mA;
= 1.2 mA
= 0 mA
= 2.8 V
= 5 mA
= 15 mA
= 100 mA
= 140 mA
(LN to REG) = 68 k
(REG to SLPE) = 39 k
10
CONDITIONS
EE
3.95
4.2
5.4
3.45
4.65
2.8
3.5
51
25.5
51
16.8
24.5
4
0.5
0.5
8
MIN.
4.25
4.45
6.1
3.8
5
0.96
55
3.05
3.75
64
32
82
52
20.7
25.5
TYP.
2
0.2
0.2
0.2
0.5
Product specification
TEA1068
4.55
4.7
6.7
7.5
0
4.1
5.35
1.3
82
77
38.5
53
+0.5
24.6
26.5
+0.5
+8
MAX.
V
V
V
V
mV/K
V
V
mA
V
V
k
k
dB
dB
dB
dB
k
dB
dB
dB
dB
UNIT
A