- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382703 > U4050B-AFL Speech Circuit with Line-Powered Loudspeaker Amplifier PDF資料下載
參數(shù)資料
| 型號： | U4050B-AFL |
| 英文描述： | Speech Circuit with Line-Powered Loudspeaker Amplifier |
| 中文描述： | 語音電路線供電揚聲器放大器 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 253K |
| 代理商： | U4050B-AFL |
U4050B
Rev. A2, 05-Mar-98
3 (18)
Pin Description
1
2
3
4
5
6
7
8
10
9
27
22
21
20
18
19
17
12
11
28
25
26
23
24
CK
MICO
DTMF
GS
MIC1
MIC2
ST
CLIM
LEVSQ
RECO1
GR
RECO2
VL
GND
SAO
VD
RDC
SWAMP
PD
VC
CLISA
GSA
AGA
IREF
16
15
14
13
14052
CSQ
VM
MUTE
TIN
Figure 3. Pinning S028
Pin
1
3
2
Symbol
RECO2,
RECO1
GR
Function
Symmetrical outputs of receiving
amplifier
A resistor connected from this pin to
V
M
(AC coupled) sets the receiving
amplification at the circuit
Input of sidetone amplifier
Time constant of anticlipping in trans-
mit patch
Input of receiving path
Output of microphone preamplifier
Input for DTMF signals (ac coupled).
In Mute condition a small portion of
the signal at this pin is monitored to
the receiver output.
A resistor from this pin to V
M
sets the
amplification of microphone and
DTMF signals.
Inverting input of microphone ampli-
fier
4
5
ST
CLIM
6
7
8
CK
MICO
DTMF
9
GS
10
MIC1
Pin
11
Symbol
MIC2
Function
Non-inverting input of microphone
amplifier
Input for setting the switching level of
the squelch circuit
Time constant of the squelch function
Reference node for microphone, ear-
phone and loudspeaker amplifier.
Supply for electret microphone set to
V
D
/2.
Input of intermediate transmit stage
Active high input to switch the circuit
into DTMF condition.
Time constant of anticlipping of
speaker amplifier.
A resistor connected from this pin to
ground converts the excess line cur-
rent into heat in order to prevent the
IC from thermal destruction at high
line currents
A small resistor connected from this
pin to V
L
sets the slope of the charac-
teristic and also affects the line length
equalization characteristics and the
line current at which the loudspeaker
amplifier is switched on.
Unregulated supply voltage for pe-
ripheral circuits (dialers, microproces-
sors, etc.). Output current capability
and output voltage increase with line
current.
Output of loudspeaker amplifier.
Reference point for DC and AC out-
put signals
Line voltage
The internal equivalent inductance of
the circuit is proportional to the value
of the capacitor at this pin. A resistor
connected to ground may be used to
reduce the line voltage.
Active high input for reducing the
current consumption of the circuit.
Simultaneously V
L
is shorted by an
internal switch.
Current input for setting the gain of
the speaker amplifier
Automatic gain adjustment with line
current. A resistor connected from this
pin to V
L
sets the starting point.
Maximum gain change is 6 dB.
Internal reference current generation
12
13
14
CSQ
VM
15
16
TIN
MUTE
17
CLISA
18
SWAMP
19
RDC
20
VD
21
22
SAO
GND
23
24
VL
VC
25
PD
26
GSA
27
AGA
28
IREF
相關PDF資料 |
PDF描述 |
|---|---|
| U4050B-AFLG3 | Speech Circuit with Line-Powered Loudspeaker Amplifier |
| U4055B | Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4055B1 | Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4070B-FP | Tone Ringer Interface |
| U4074B | Tone Ringer Interface |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| U4050B-AFLG3 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Speech Circuit with Line-Powered Loudspeaker Amplifier |
| U4055B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4055B1 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Low-Voltage Electronic Speech Circuit with Dialer Interface |
| U4056B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
| U4058B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
發(fā)布緊急采購，3分鐘左右您將得到回復。