U4050B TEMIC Semiconductors, U4050B Datasheet - Page 7

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

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Rev. A2, 05-Mar-98
Supply voltage
Test conditions: V
Output voltage
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 V
Parameters
L
MIC
= 10 mV; T
I
I
RC = 68 k
I
I
RC = 130 k
I
I
T
I
I
RC = 130 k
I
I
R
I
RSQ = 100 k
I
MUTE active
I
V
Mute inactive
I
Mute active
I
PD active
I
V
PD = active
PD = inactive
V
PD = active
I
I
PD = active
I
PD = active
L
D
L
D
L
D
M
L
L
L
L
L
L
L
L
L
L
L
L
amb
GSA
MUTE
PD
D
= 15 mA
=100 mA
w
= 15 mA
= 15 mA
= 100 mA
w
w
w
w
> 15 mA
> 15 mA
> 15 mA
> 15 mA
= 15 mA
= 2 mA
= 2 mA
= 0 mA
Test Conditions / Pins
= 0.3 mA
amb
= V
= V
= –10 to + 60 C
15 mA
15 mA
15 mA
15 mA
15 mA
= 18 to 560 k
= –10 to 60 C
PD
= V
D
= 4.5 V
D
see figure 4
see figure 9
see figure 10
see figure 10
Symbol
V
V
I
D
V
RSQ
MUTE
I
D
V
V
MUTE
MUTE
V
V
V
V
I
DPD
V
V
G
mico
PD
G
PD
PD
M
D
D
D
L
L
SA
S
Min.
1.45
2.9
3.1
7.5
6.5
0.5
1.5
8
2
Typ.
– 40
1.5
1.7
10
10
20
20
1
U4050B
– 100
Max.
12.5
6.1
3.3
0,3
0,3
0.3
12
10
30
50
2
Unit
M
mV
dB
dB
V
V
V
V
V
V
V
V
V
V
7 (18)
A
A
A