TSH512(2001) Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
TSH512
(Rev.:2001)
(Rev.:2001)
STMicroelectronics
TSH512 Datasheet PDF : 19 Pages
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TSH512
APPLICATION SCHEMATIC
The Electret Condenser Microphone is biased with MIC-BIAS1 voltage. The audio signal is transmitted on
the left channel using a 2.8 MHz carrier. The VOX activates the transmitter TX1 when the audio signal is
present. The audio signal at line level is attenuated and is transmitted by the second transmitter TX2 at
2.3 MHz.
TX2 = 2.3MHz
INPUT LINE
TX2 (RIGHT)
RCA
R1
J7
10K
C4
100nF
R2
1K
VCC
A
J20
B
J20 TX2
B ON
A OFF
220nF
C16
R26
33K
1K
R24
MICRO
MIC1
1uF C20
1
2
470nF
VCC 3
C8
4
5
470nF
C9
470nF
C10
6
3K9
R25 7
8
VCC 9
10
11
C17
1uF
C5
100nF
C23
1uF
390
R37
C26
nc
C24
2nF2
P3
100K
R33
C6
100nF
R6
47K
C25
44770p0FpF
C11
470nF
470nF
C12
VCC
VCC
C45
D1
680pF
C49
12pF
L3
120uF
C37
C39
C43
56pF 56pF
C56
R43
22K
L5
IC?
56pF
C40 C52
Reject filter 2.8MHz
(optional)
C55
DEC2
MIC-BIAS2
LNA
GND
VCC
ALC
PEA
TSH512
SBY
VOX-INTS
VOX
VOX-SENS +-
VCC
Monostable
GND
MIC-BIAS1
DEC1
LNA ALC PEA
+
+
-
-
GND 33
BUF-IN2 32
BUF-OUT2 31
22nF
C57
10uF
GND
VOX-TIMER
VOX-INTN
VOX-MUTE
VCC
BUF-OUT1
BUF-IN1
GND
30
29
28
27
VCC
26
25
P5
220K
C58
100nF
C15
470nF
24
C53
23
22nF
C41
56pF
TSH512-B
C27
nc
R38
39k
C21
1uF
33K
C33
1uF
VCC
C13
470nF
470nF
VCC
C14
C28
470pF
R34
100K
P4
1K 50K
C7
100nF
47K
R9
C34
2nF2
R44
22K
C42
56pF
D2
L6
nc
C32
C59
nc
nc
C44
56pF
L4
Reject filter 2.3MHz
(optional)
C50
12pF
C46
82pF
TX1 = 2.8MHz
.
.
VCC-LED
D3
TSFP5400
Q1
BC847
VCC-LED
D4
TSFP5400
Q2
BC847
18/19
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