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TEA7088AFP Datasheet(PDF) 6 Page - STMicroelectronics

No. de pieza TEA7088AFP
Descripción Electrónicos  LOW-RANGE PHONE DEDICATED CHIP
Download  17 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TEA7088AFP Datasheet(HTML) 6 Page - STMicroelectronics

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ELECTRICAL SPECIFICATIONS (continued)
Receive Characteristics (Tamb =25
°C; RL = 660Ω ; f = 1kHz)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Eff
Sidetone
Eff = (Vear
+ - Vear -) /Vm
Test 3, Vm = -55dBV, IL = 22mA,
R14 = 10k
Ω, R17 = 15kΩ
22.5
dB
GRXl
GRXs
Gain in Symmetric Mode
Grx = (Vear
+ - Vear-)/ V
L
Test 6, VL = -14.5dBV, R14 = 10k
Ω,
R17 = 15k
Ω, R25 = 3.9kΩ
IL = 22mA
IL = 90mA
0.7
-6
1.7
-4
2.7
-2
dB
dB
Dr
Distortion
Test 4, Rear = 300
Ω,IL = 22mA
Vear = -12dBV
Vear = -8dBV
2
5
%
%
Nr
Noise
Test 4, IL = 22mA
-76
dBmp
Vear
(010010)
Earphone Mute
IL = 22mA, VL = -14.5dBV
60
dB
Zout
Output Impedance
20
Automatic Gain Control Inhibition (Tamb =25
°C; RL = 660Ω ; f = 1kHz no AGC mode selected)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Gtp
Grp
Transmit Gain
Receive Gain
Test 3 & Test 4, IL = 22 to 90mA
Code : 010100
Vm = -55dBV
VL = -14.5dBV
Gtxl -3
Grxl -3
Gtxl -2
Grxl -2
Gtxl -1
Grxl -1
dB
dB
Ring Characteristics (Tamb =25
°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VThri ON
VThri OFF
Ringing Threshold Voltage
Test 5 a/b
RI high (see Figure 4)
Rl low (see Figure 4)
15
5
20
9
V
V
ICRing
Internal Consumption in Ring
Mode
VRING = 10V
1
1.2
mA
VRMC
Microprocessor Supply Voltage
3.45
3.75
4.05
V
tRON
Rise Time
IRING = 10mA
100
ms
VRING
Internal Zener Voltage
27
V
Vbout
Buzzer Vout
Freq = 1312Hz
Freq. Code 001111
VRING = 27Vzener (see Figure 5)
Level Code (011111)
Level Code (011110)
Level Code (011101)
Level Code (011100)
12
4.4
2.2
1
13
5.6
2.8
1.4
13.5
6.7
3.4
1.8
VRMS
VRMS
VRMS
VRMS
V
bout
Figure 5 : Ringer Output Waveform
OFF
ON
Ringer
Status
V
OFF
V
ON
V
Ringer Threshold (V
THRI)
Figure 4 : Ringer Hysteresis Ringer
TEA7088A
6/17


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