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| U4050B Datasheet, PDF (4/18 Pages) TEMIC Semiconductors – Speech Circuit with Line-Powered Loudspeaker Amplifier | |||
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U4050B
Absolute Maximum Ratings
Parameters
Line current
Line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation (Tamb = 60°C, SO28)
Symbol
Value
Unit
IL
140
mA
VL
15
V
Tj
150
°C
Tamb
â25 to +75
°C
Tstg
â55 to +150
°C
Ptot
750
mW
Thermal Resistance
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 kâ¦,
Tamb = 25°C, RGSA = 560 kâ¦, 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
w IL 15 A, CL = 4.7 nF
f = 300 to 3400 Hz
Pin AGA open
IL = 15 to 100 mA
Tamb = â 10 to + 60°C
IL = 15 mA
GS
GS
DGS
DGS
DGS
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
â 80
0.5
9
Max.
5.6
56
"48.75
0.5
" 0.5
" 0.5
80
2
4.2
â72
Unit
V
V
V
V
V
dB
dB
dB
dB
dB
dB
kâ¦
%
dBm
dBmp
ms
ms
4 (18)
Rev. A2, 05-Mar-98
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