U4050B Datasheet, PDF (7/18 Pages) TEMIC Semiconductors – Speech Circuit with Line-Powered Loudspeaker Amplifier

U4050B
Parameters
Test Conditions / Pins Symbol Min.
Typ.
Max.
Unit
Supply voltage
see figure 4
Test conditions: V_MIC = 10 mV; T_amb = –10 to 60°C
Output voltage
I_L = 15 mA
I_D = 2 mA
V_D
2.9
V
RC = 68 kΩ
I_L = 15 mA
I_D = 2 mA
V_D
3.1
V
RC = 130 kΩ
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_L
I_L = 100 mA
I_D = 0 mA
T_amb = –10 to + 60°C
w ^{IM = 0.3 mA}
I_L 15 mA
RC = 130 kΩ
w ^{see figure 9}
I_L 15 mA
w I_L 15 mA
w ^{RGSA = 18 to 560 kΩ}
I_L 15 mA
w ^{RSQ = 100 kΩ}
I_L 15 mA
see figure 10
MUTE active
I_L > 15 mA
V_MUTE = V_D
Mute inactive
I_L > 15 mA
Mute active
I_L > 15 mA
see figure 10
PD active
I_L > 15 mA
V_PD = V_D
PD = active
PD = inactive
V_D = V_PD = 4.5 V
PD = active
I_L= 15 mA
I_L = 15 mA
PD = active
I_L=100 mA
PD = active
V_D
V_M
1.45
DG_S
8
DG_SA
7.5
V_mico
6.5
RSQ
0.5
I_MUTE
V_MUTE
V_MUTE
1.5
I_PD
V_PD
2
V_PD
I_DPD
V_L
V_L
6.1
V
3.3
V
10
12
dB
10
12.5
dB
10
mV
1
2
MΩ
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)