TEA1085 Philips Semiconductors, TEA1085 Datasheet - Page 17

• Manufacturer Part Number: TEA1085
• Description: Listening-in circuit for line-powered telephone sets
• Manufacturer: Philips Semiconductors

Philips Semiconductors
March 1992
Loudspeaker outputs QLS1 and QLS2
V
THD
V
Dynamic limiter
THD
t
t
V
V
Logic gain control
SYMBOL
att
rel
G
o(p-p)
o(p-p)
BBO
no(RMS)
Listening-in circuit for line-powered
telephone sets
v
output voltage (peak-to-peak
value)
total harmonic distortion
output voltage (peak-to-peak
value)
total harmonic distortion
dynamic behaviour of limiter
attack time; V
10 mV(RMS) to 65 mV(RMS)
release time; V
65 mV(RMS) to 10 mV(RMS)
threshold V
which gain reduction starts
noise output voltage
reduction of voltage gain
single ended
bridge tied load
single ended
bridge tied load
single ended
single ended
bridge tied load
voltage limiter
current limiter
V
single ended
bridge tied load
GSC2 = 0, GSC1 = 1
GSC2 = 1, GSC1 = 0
GSC2 = 1, GSC1 = 1
BB
limiter
PARAMETER
BB
i
limiter below
jumps from
i
jumps from
V
I
I
I
I
V
I
I
I
V
I
V
V
I
I
I
single ended load
I
I
I
I
I
1 k between inputs
LSI1, LSI2;
psophometrically
weighted (P53 curve)
V
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
SUP
10 dB
i
i
i
SUP
i
i
= 22 mV(RMS)
= 22 mV(RMS)
= 22 mV(RMS)
= 22 mV(RMS)
= 1.8 mV(RMS)
= 9 mA; note 1
= 17 mA; note 2
= 23.5 mA; note 2
= 32 mA; note 3
= 9 mA
= 17 mA
= 23.5 mA
= 17 mA;
= 9 mA
= 17 mA
= 23.5 mA
= 17 mA
= 12 mA
= 9 mA
= 17 mA
= 9 mA
CONDITIONS
V
EE
= 1 V(RMS)
17
1.2
2.5
2.5
3.5
1.75
tbf
tbf
5.8
11.7
17
MIN.
TEA1085; TEA1085A
1.45
2.9
2.9
4.0
0.4
0.7
0.4
2.15
0.5
1.2
0.6
2
500
10
75
2.95
170
350
6.3
12.2
18
TYP.
Preliminary specification
2
2
2
10
10
10
5
tbf
tbf
tbf
6.8
12.7
19
MAX.
V
V
V
V
%
%
%
V
%
%
%
ms
ms
ms
ms
V
dB
dB
dB
V
V
UNIT