tea1085t NXP Semiconductors, tea1085t Datasheet - Page 16

• Manufacturer Part Number: tea1085t
• Description: Listening-in Circuit For Line-powered Telephone Sets
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS
V
OFF (listening-in mode); MUTE (TEA1085A) = HIGH (listening-in mode); GSC1 = GSC2 = LOW; 50
no R38; test circuit Fig.14; unless otherwise specified
March 1992
Supplies
V
V
V
I
THD
V
I
I
Loudspeaker amplifier inputs LSI1 and LSI2
G
SYMBOL
Z
SUP
SUP
BB
SREF
V
V
G
G
G
SUP
SUP-SREF
BB
no(RMS)
Listening-in circuit for line-powered
telephone sets
v
i
BB
BB
v
v
v
/ T
= 4.2 V; V
minimum DC input voltage
internal reference voltage
stabilized supply voltage
minimum operating current
distortion of AC signal on SUP V
noise between SUP and V
current consumption in
power-down condition
input impedance
voltage gain with 50
variation with signal level
variation with frequency
referred to 1 kHz
variation with temperature
referred to 25 C
variation from
I
variation with temperature
SUP
SS
= 0 V; I
= 15 to 120 mA
PARAMETER
SUP
= 15 mA; V
load
EE
SUP
no R38; I
R38 = 39.2 k between
pins V
V
I
no R38; I
PD = HIGH
V
V
single ended
differential
I
V
single ended
BTL output
I
V
14 mV(RMS)
single ended
BTL output
f = 300 Hz and 3400 Hz;
V
single ended
BTL output
T
single ended
BTL output
SUP
SUP
SUP
= 0 V(RMS); f = 800 Hz; T
amb
SREF
SUP(RMS)
SUP
BB
i
i
i
= 1.8 mV(RMS)
= 1.8 mV(RMS) and
= 1.8 mV(RMS)
= 3.6 V
= 15 mA
= 15 mA;
= 50 mA;
= 25 to 75 C
CONDITIONS
= 4.5 V
SS
= 5.2 V;
SUP
and VA;
SUP
= 1 V
16
= 15 mA
= 15 mA
275
3.4
4.2
tbf
7.5
15
34
39.9
amb
MIN.
= 25 C; PD = LOW; MUTE (TEA1085) =
TEA1085; TEA1085A
V
315
3.6
10
4.45
4.2
0.3
55
400
9.5
19
35
40.9
0.2
72
0.1
0.2
BB
0.1
0.1
0.4
0.5
TYP.
0.7
Preliminary specification
355
3.8
4.7
tbf
5.5
75
550
11.5
23
36
41.9
0.4
0.6
MAX.
loudspeaker;
V
mV
V
mV
V
V
mA
%
dBmp
k
k
dB
dB
dB
dB
dB
dB
dB
dB
A
A
UNIT