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U4050B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4050B
기능 Speech Circuit
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U4050B 데이터시트, 핀배열, 회로
U4050B
Speech Circuit with Line-Powered Loudspeaker Amplifier
Description
The electronic speech circuit U4050B is a linear
integrated circuit for use in telephone sets. It replaces the
hybrid transformer, sidetone equivalent and ear
protection rectifiers.
The circuit is line powered and contains all components
necessary for amplification of signals and adaptation to
the line. An integrated loudspeaker amplifier allows
loudhearing operation.
Features
www.DataSheet4U.cDomIntegrated amplifier for loudhearing operation
D Anticlipping for loudspeaker amplifier
D Supply voltages for all functional blocks of a
subscriber set
D Adjustable DC characteristics
D Adjustable sending and receiving amplification
D Automatic line loss compensation
D Symmetrical output of earpiece amplifier
D Built-in ear protection
D Symmetrical input of microphone amplifier
D Adjustable sidetone suppression independent
of sending and receiving amplification
D DTMF and MUTE inputs
D Anticlipping in transmit direction
D Squelch
D Integrated transistor for short circuiting the line
voltage
D Power down
D Operation possible at line currents above 10 mA
Benefits
D Independent adjustment of transmit gain, receive gain
and sidetone suppression
D Low number of external components
Block Diagram
GS MICO TIN ST GR RECO1
RECO2
8
DTMF
MIC1
MIC2
10
11
9 7 15 4
+
––
+
23
+
SAI
1
26 GSA
SA
21 SAO
12
LEVSQ
CSQ 13 SQUELCH
TXA
AGA
LIMSA
REC. ATT.
17 CLISA
AGA
27
6 CK
LIMITER
5
CLIM
MUTE
16
MUTE
Power supply
NSA U4050B
25 22 28 18 14
PD GND IREF SWAMP VM
Figure 1. Block diagram
20
VD
23 VL
19 RDC
24 VC
Ordering Information
Extended Type Number
U4050B-AFL
U4050B-AFLG3
Package
SO28
SO28
Remarks
Taped and reeled
Rev. A2, 05-Mar-98
1 (18)




U4050B pdf, 반도체, 판매, 대치품
U4050B
Absolute Maximum Ratings
Parameters
Line current
Line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation (Tamb = 60°C, SO28)
Symbol
IL
VL
Tj
Tamb
Tstg
Ptot
Value
140
15
150
–25 to +75
–55 to +150
750
Unit
mA
V
°C
°C
°C
mW
Thermal Resistance
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Parameters
Junction ambient SO28
Symbol
RthJA
Value
120
Unit
K/W
Electrical Characteristics
Test conditions unless otherwise specified: f = 1 kHz, 0 dBm = 775 Vrms, IM = 0.3 mA, ID = 2 mA, RC = 130 k,
Tamb = 25°C, RGSA = 560 k, ZH = ZM = 68 nF, Pin AGA open
Parameters
DC characteristics
DC voltage drop
over circuit
Transmission amplifier
Adjustment
range of transmit gain
Transmitting
amplification
Frequency response
Gain change with current
Gain deviation
CMRR of microphone
amplifier
Input resistance of MIC
amplifier
Distortion at line
Maximum output voltage
Noise at line
psophometrically weighted
Anticlipping
attack time
Release time
Test Conditions / Pins Symbol
see figure 4
IL = 2 mA
VL
IL = 15 mA
VL
IL = 19 mA
VL
IL = 30 mA
VL
IL = 100 mA
VL
see figures 5 and 11
IL = 15 mA
IL = 15 mA
wIL 15 A, CL = 4.7 nF
f = 300 to 3400 Hz
Pin AGA open
IL = 15 to 100 mA
Tamb = – 10 to + 60°C
IL = 15 mA
GS
GS
D GS
D GS
D GS
CMRR
IL > 15 mA
VL = 775 mV2rms
IL > 19 mA d < 5%
Vmic = 10 m
IL > 15 mA
GS = 48 dB
Vmic = 20 mV
C = 470 nF
Each 3 dB overdrive
Ri
ds
V1max
no
Min.
4.8
40
47.75
60
45
1.8
Typ.
1.9
5.2
5.4
6.0
9.5
48
48.25
80
60
3
– 80
0.5
9
Max.
5.6
56
48.75
" 0.5
" 0.5
" 0.5
80
2
4.2
–72
Unit
V
V
V
V
V
dB
dB
dB
dB
dB
dB
k
%
dBm
dBmp
ms
ms
4 (18)
Rev. A2, 05-Mar-98

4페이지










U4050B 전자부품, 판매, 대치품
U4050B
Parameters
Test Conditions / Pins Symbol Min. Typ. Max. Unit
Supply voltage
see figure 4
Test conditions: VMIC = 10 mV; Tamb = –10 to 60°C
Output voltage
IL = 15 mA
ID = 2 mA
RC = 68 k
VD 2.9
V
IL = 15 mA
ID = 2 mA
RC = 130 k
VD 3.1
V
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Supply voltage for an
electret microphone
Squelch
Attenuation of
transmit gain
Attenuation of
speaker amplifier
Switching level
of squelch
Squelch disable
MUTE input
MUTE input current
MUTE input voltage
PD input
PD input current
Input voltage
Current consumption
Voltage drop at VL
IL = 100 mA
ID = 0 mA
Tamb = –10 to + 60°C
wIM = 0.3 mA
IL 15 mA
RC = 130 k
see figure 9
wIL 15 mA
wIL 15 mA
wRGSA = 18 to 560 k
IL 15 mA
RSQ = 100 k
wIL 15 mA
see figure 10
MUTE active
IL > 15 mA
VMUTE = VD
Mute inactive
IL > 15 mA
Mute active
IL > 15 mA
see figure 10
PD active
IL > 15 mA
VPD = VD
PD = active
PD = inactive
VD = VPD = 4.5 V
PD = active
IL= 15 mA
IL = 15 mA
PD = active
IL=100 mA
PD = active
VD
VM 1.45
D GS
D GSA
Vmico
RSQ
IMUTE
8
7.5
6.5
0.5
VMUTE
VMUTE
1.5
IPD
VPD
VPD
IDPD
VL
VL
2
6.1 V
3.3 V
10 12 dB
10 12.5 dB
10 mV
1 2 M
20 30 µA
0,3 V
0,3 V
20 50 µA
V
0.3 V
– 40 – 100 µA
1.5 V
1.7 V
Rev. A2, 05-Mar-98
7 (18)

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부품번호상세설명 및 기능제조사
U4050B

Speech Circuit

TEMIC Semiconductors
TEMIC Semiconductors

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