U4050B TEMIC Semiconductors, U4050B Datasheet - Page 4

• Manufacturer Part Number: U4050B
• Description: Speech Circuit
• Manufacturer: TEMIC Semiconductors

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Absolute Maximum Ratings
Thermal Resistance
Electrical Characteristics
Test conditions unless otherwise specified: f = 1 kHz, 0 dBm = 775 V
T
U4050B
Line current
Line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation (T
Junction ambient SO28
DC characteristics
DC oltage drop
DC voltage drop
over circuit
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
4 (18)
amb
= 25 C, R
Parameters
GSA
= 560 k , Z
Parameters
Parameters
amb
= 60 C, SO28)
I
I
I
I
I
I
I
I
f = 300 to 3400 Hz
Pin AGA open
I
T
I
I
V
I
V
I
G
V
C = 470 nF
Each 3 dB overdrive
L
L
L
L
L
L
L
L
L
L
L
L
L
H
amb
L
mic
S
mic
= 15 mA
> 19 mA d < 5%
> 15 mA
= 2 mA
= 15 mA
= 19 mA
= 30 mA
= 100 mA
= 15 mA
= 15 mA
w
= 15 to 100 mA
> 15 mA
= Z
Test Conditions / Pins
= 48 dB
= 775 mV2rms
= – 10 to + 60 C
= 10 m
= 20 mV
15 A, C
M
= 68 nF, Pin AGA open
see figure 4
see figures 5 and 11
L
= 4.7 nF
Symbol
CMRR
V
D
Symbol
Symbol
D
D
V
V
V
V
V
G
G
R
1max
R
n
T
d
G
G
G
T
P
V
o
L
L
L
L
L
S
S
s
I
T
amb
thJA
i
stg
S
tot
L
S
S
L
j
rms
, I
M
47.75
Min.
4.8
1.8
40
60
45
= 0.3 mA, I
–55 to +150
–25 to +75
Value
Value
48.25
Typ.
– 80
140
150
750
120
1.9
5.2
5.4
6.0
9.5
0.5
15
48
80
60
D
3
9
= 2 mA, RC = 130 k ,
"
"
"
Rev. A2, 05-Mar-98
48.75
Max.
–72
5.6
4.2
56
80
2
0.5
0.5
0.5
K/W
Unit
Unit
mW
mA
dBmp
V
dBm
Unit
C
C
C
k
dB
dB
dB
dB
dB
dB
ms
ms
%
V
V
V
V
V