TEA7092TQ 데이터 시트보기 (PDF) - STMicroelectronics
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TEA7092TQ Datasheet PDF : 24 Pages
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TEA7092
RECEIVE CHARACTERISTICS (Tamb = 25°C, f = 1kHz)
Symbol
Eff
Grl
Grs
Grs+6
Drx1
Drx2
Nrx
Mrx
ZIN
ZOUT
Parameter
Sidetone Efficiency
Gain
+6dB Code [0010110]
Distortion
Noise
Mute
Input Impedance
Output Impedance
Test Conditions
Test 3, Vem = -48dBV, IL = 20mA
Test 2
IL = 20mA
IL = 90mA
IL = 90mA
Test 2, IL = 20mA
Vear = -3dBV
Vear = 0dBV
Test 2, IL = 20mA
Test 2, IL = 20mA, VL = -9dBV
Between Pins SNSL & SNLL
Min .
5
-1.2
5
60
Typ.
6
0.8
6
-76
120
5
Max. Unit
26
dB
7
dB
2.8
dB
7
dB
3
%
5
%
dBmp
dB
150
kΩ
Ω
The sidetone of the TEA7092 uses two networks, these two networks are internally mixed between long line
length and short line length.
The following equation gives the sidetone impedance versus line current : ZAL = K x ZALL + (1 - K) x ZASL
K = 1 for IL = ILL ; K = 0 for IL = ISL, and K varies linearly between 1 and 0 when IL varies between ILL and ISL.
It is possible to use only the standard one sidetone concept by short-circuited Pins SNSL ans SNLL.
Gain Control Inhibition Facility For PABX Application
(Tamb = 25°C, IL = 20mA, f = 1kHz / No AGC mode selected 0010100)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
Gtp Transmit Gain
Test 2
Gtl - 3 Gtl - 2 Gtl -1 dB
Grp Receive Gain
Test 3
Grl - 3 Grl - 1.4 Grl - 0.5 dB
LOUDSPEAKER AMPLIFIER PART
Loudspeaker Amplifier Channel (Tamb = 25°C, f = 1kHz, RLS = 50Ω, Vem = 0)
The Loudspeakeramplifier channel has a maximum gain of 35dB between Pin LSIN and Pin LSOUT. This
gain is programmable through the serial bus interface, 7 steps of 4dB each.
To avoid distortion, the output level on the loudspeaker is controlled by a softclipping function, the time
constant of this feature is connected to LSSOF pin.
Symbol
GLS0
GLS1
GLS2
GLS3
GLS4
GLS5
GLS6
GLS7
Mls
lsin
PLS1
PLS2
Parameter
GAIN VHP/Vac
GMAX
GMAX-4dB
GMAX-8dB
GMAX-12dB
GMAX-16dB
GMAX-20db
GMAX-24dB
GMAX-28dB
Mute Loudspeaker
Input Impedance
Output Power
Test Conditions
Min. Typ. Max. Unit
Test 4 IL = 20mA
Code: (0 1 0 0 1 1 1)
33.5
35
36.5
dB
Code: (0 1 0 0 1 1 0)
29.5
31
32.5
dB
Code: (0 1 0 0 1 0 1)
25.5
27
28.5
dB
Code: (0 1 0 0 1 0 0)
21.5
23
24.5
dB
Code: (0 1 0 0 0 1 1)
17.5
19
20.5
dB
Code: (0 1 0 0 0 1 0)
13.5
15
16.5
dB
Code: (0 1 0 0 0 0 1)
9.5
11
12.5
dB
Code: (0 1 0 0 0 0 0)
5.5
7
8.5
dB
Test 4
-30
dB
30
40
50
kΩ
Test 4, Gain = GLS0, VIN = 0.15VRMS
IL = 20mA, D ≤ 2%
13
18
mW
IL = 90mA, D ≤ 2%
40
55
mW
8/24
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