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부품번호 | TEA7092 기능 |
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기능 | TELEPHONE ANALOG FRONT END | ||
제조업체 | ST Microelectronics | ||
로고 | |||
전체 30 페이지수
APPLICATION NOTE
TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
CONTENTS
Pages
I.
TEA7092 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
I.1. SETTING THE TEA7092 APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
I.2. PINOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
I.3. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.4. INPUT/OUPUT CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
6
II.
II.1.
II.1.1.
II.1.2.
II.1.3.
II.1.4.
II.2.
II.3.
II.3.1.
II.3.2.
II.3.3.
II.3.4.
II.3.5.
II.4.
II.4.1.
II.4.2.
II.4.3.
II.4.4.
II.5.
II.5.1.
II.5.2.
II.5.3.
II.5.4.
II.5.5.
II.6.
SPEECH FEATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEA7092 DC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Telephone Set DC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start Up Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Information (VCC/VREF/IREF/VMC/VRMC/VLS/VREFL) . . . . . . . . . . . . . . . . . . . . . . .
IMPEDANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMIT CHANNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information - Maximum Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Softclipping Threshold (Maximum Line Level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Loss Compensation A.G.C. Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.G.C. Inhibition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmit Squelch / Antiacoustic Feedback Stage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIDETONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
One Sidetone Network Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Tracking Sidetone Network Principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sidetone Programming for PABX Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVE CHANNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information - Maximum Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Output Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Loss Compensation / A.G.C. Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.G.C. Inhibition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+6dB Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HANDSFREE INTERFACE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
14
14
14
15
17
18
19
19
20
21
21
22
23
23
24
24
25
26
26
27
30
30
30
30
III.
III.1.
III.2.
III.3.
III.4.
III.5.
III.6.
III.7.
III.8.
CALL PROGRESS MONITOR AND GROUP LISTENING MODES . . . . . . . . . . . . . . .
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOUDSPEAKING PART SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOFTCLIPPING STAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANTIACOUSTIC FEEDBACK FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAXIMUM OUTPUT POWER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXTERNAL POWER SUPPLY FACILITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RING MELODY CONTROL MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BEEP ERROR GENERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
31
32
33
33
35
36
37
38
AN848/1096
1/57
TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
I - TEA7092 GENERAL INFORMATION (continued)
I.2 - Pinout
Pin N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Name
VLS
VMC
VL
VREFL
LSIN
LSSOF
DTMF1
VRMC
OSC
RI/VI
RESET
PON
CLK
DATA
SNSL
SNLL
ASQ
ASC
RECIN
REOUT
GTR
HFIN
MIC1
MIC2
VREF
VCC
TSOFT
SOFTL
IREF
VS
SLPE
AGND
ILL
ISL
EAR+
EAR-
GREC
VZP
SWP
RSU
RCO
DTMF2
GND
LSOUT
Function
Loudspeaker Power Supply
Unregulated Microcontroller Power Supply
Transmit Output Stage
Loudspeaker Reference Voltage (VLS/2)
Loudspeaker Amplifier Input
Loudspeaker Softclipping Time Constant
DTMF Filter 1
Stabilized Microcontroller Power Supply
Oscillator Input
Ring Indicator/Line Current Variation Indicator Output (*)
Microcontroller Reset Output (*)
Line Current Indicator Output (*)
Serial Bus Clock Input (*)
Serial Bus Data Input (*)
Short Line Sidetone Network
Long Line Sidetone Network
Anti-Acoustic Feedback and Squelch Time Constant
DC Offset Anti-Acoustic Feedback and Squelch Amplifier Suppression
Receive Input and Positive Line Voltage
Receive Output for Handfree Interface and Loudspeaker Input
Transmit Gain Adjustment
Handfree Microphone Input Referenced to VREF
Microphone Input 1 Referenced to VREF
Microphone Input 2 Referenced to VREF
Speech Reference Voltage (VCC/2)
Speech Power Supply
Transmit Softclipping Time Constant
Transmit Softclipping Level Adjustment
Resistor to Set Reference Current
Active Inductor and DC Characteristic Adjustment
DC Mask Slope Adjustment
Analog Ground and Negative Line Voltage
Long Line Speech Control Gain Adjustment (GMAX)
Short Line Speech Control Gain Adjustment (GMAX - 6dB)
Positive Earphone Output
Negative Earphone Output
Receive Gain Adjustment
Switch Mode Power Supply Internal Zener
Switch Mode Power Supply Output
Ring Start Up Level
Ring Power Output Control
DTMF Filter 2
Power Ground and Negative Line Voltage
Loudspeaker Output
* Logic Interface.
4/57
4페이지 TEA7092 - TELEPHONE SET INTEGRATED CIRCUIT
I - TEA7092 GENERAL INFORMATION (continued)
I.4 - Input / Output Configurations (continued)
Figure 3 : VLS (Pin 1) : Loudspeaker Part Power Supply
VMC (Pin 2) : Unregulated Microcontroller Power Supply
VRMC (Pin 8) : Stabilized Microcontroller Supply
3 VL
400Ω
10Ω
ITX/41
(see transmit
channel)
VLS 1
+ ISTART
C1
6V
3 VL
0.8mA (IL = 4mA)
2kΩ 50Ω to 3mA (IL > 20mA)
Switch ON if :
Reset low
& KIL
VRMC
8
+
C15
30 to 75µA
VMC 2
+
C10
6V
Info for
PON & RESET
470kΩ
VBANDGAP
Figure 4 : ILL (Pin 33) : Line Current Regulation Start-up Value
ISL (Pin 34) : Line Current Regulation Stop Value
VCC
300mV
For AGC Control
ILL (Pin 33) or
ISL (Pin 34)
R19 =
300
ISL - 5.6
R18 =
300
ILL - 5.6
R18 and R19 in kΩ ; ILL and ISL in mA
R18 and R19 should be connected
as close to the ground Pin (AGND)
as possible.
R18 or R19
7/57
7페이지 | |||
구 성 | 총 30 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
TEA7091 | TELEPHONE ANALOG FRONT END | ST Microelectronics |
TEA7092 | TELEPHONE ANALOG FRONT END | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |