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參數(shù)資料
| 型號： | TEA1085AT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Listening-in circuit for line-powered telephone sets |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| 封裝： | PLASTIC, SO-24 |
| 文件頁數(shù)： | 16/32頁 |
| 文件大?。?/td> | 199K |
| 代理商： | TEA1085AT |
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March 1992
16
Philips Semiconductors
Preliminary specification
Listening-in circuit for line-powered
telephone sets
TEA1085; TEA1085A
CHARACTERISTICS
V
SREF
= 4.2 V; V
SS
= 0 V; I
SUP
= 15 mA; V
SUP
= 0 V(RMS); f = 800 Hz; T
amb
= 25
°
C; PD = LOW; MUTE (TEA1085) =
OFF (listening-in mode); MUTE (TEA1085A) = HIGH (listening-in mode); GSC1 = GSC2 = LOW; 50
loudspeaker;
no R38; test circuit Fig.14; unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies
V
SUP
V
SUP-SREF
internal reference voltage
V
BB
stabilized supply voltage
V
BB
variation from
I
SUP
= 15 to 120 mA
minimum DC input voltage
275
3.4
V
BB
+
0.7
315
3.6
10
355
3.8
V
mV
V
mV
no R38; I
SUP
= 15 mA
R38 = 39.2 k
between
pins V
SS
and VA;
V
SREF
= 5.2 V;
I
SUP
= 15 mA
no R38; I
SUP
= 15 mA
4.2
4.45
4.7
V
V
BB
/
T
I
SUP
THD
V
no(RMS)
variation with temperature
minimum operating current
distortion of AC signal on SUP V
SUP(RMS)
= 1 V
noise between SUP and V
EE
current consumption in
power-down condition
tbf
0.2
4.2
0.3
72
tbf
5.5
V
mA
%
dBmp
PD = HIGH
I
SUP
I
BB
V
SUP
= 4.5 V
V
BB
= 3.6 V
55
400
75
550
μ
A
μ
A
Loudspeaker amplifier inputs LSI1 and LSI2
|
Z
i
|
input impedance
single ended
differential
I
SUP
= 15 mA;
V
i
= 1.8 mV(RMS)
single ended
BTL output
I
SUP
= 50 mA;
V
i
= 1.8 mV(RMS) and
14 mV(RMS)
single ended
BTL output
f = 300 Hz and 3400 Hz;
V
i
= 1.8 mV(RMS)
single ended
BTL output
T
amb
=
25 to
+
75
°
C
7.5
15
9.5
19
11.5
23
k
k
G
v
voltage gain with 50
load
34
39.9
35
40.9
36
41.9
dB
dB
G
v
variation with signal level
+
0.1
+
0.2
0.4
0.6
dB
dB
G
v
variation with frequency
referred to 1 kHz
±
0.1
±
0.1
dB
dB
G
v
variation with temperature
referred to 25
°
C
single ended
BTL output
±
0.4
±
0.5
dB
dB
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