U4092B Datasheet, PDF (18/32 Pages) TEMIC Semiconductors – Monolithic Integrated Feature Phone Circuit

U4092
TELEFUNKEN Semiconductors
Parameters
Test conditions / Pin Symbol Min. Typ.
PD input
PD input current
Input voltage
Voltage drop at V_L
PD active, I_L > 14 mA Ipd
V_PD = V_MP
PD = active
V_pd
PD = inactive
V_pd
I_L = 14 mA,
V_L
PD = active
I_L = 100 mA,
V_L
PD = active
9
2
1.5
1.9
w ^{Input characteristics of IMPSEL}
Input current
I_L 14 mA
V_IMPSEL = V_MP
V_IMPSEL = GND
Input voltage
Input high
Input low
MUTX input
I_IMPSEL
18
I_IMPSEL
– 18
V_IMPSEL ^VMP-0.3V
V_IMPSEL
Input current
Input voltage
V_MUTX = V_MP
V_MUTX = GND
Input high
Input low
I_MUTX
20
I_MUTX
– 20
V_MUTX ^VMP-0.3V
V_MUTX
Max.
0.3
0.3
30
– 30
0.3
Unit Figure
uA
28
V
28
V
28
mmAA
28
V
28
V
28
mmAA
28
V
28
V
28
U4092B – control
0
0 to Z
1 to Z
1
IMPSEL
W Line-impedance = 600
TXA = on
ES = off
W Line-impedance = 600
TXA = off
ES = on
W Line-impedance = 900
TXA = off
ES = on
W Line-impedance = 900
TXA = on
ES = off
MODE
Speech
0
Transmit-mute
Z
Transmit-mute
Speech
1
MUTX
MIC 1/2 transmit enabled
receive enable
AFS = on
AGA = on
TXACL = on
DTMF transmit enabled
receive enable
AFS = on
AGA = on
TXACL = on
DTMF transmit enabled
DTMF to receive enable
AFS = off
AGA = off
TXACL = off
MODE
Speech
For answering
machine
DTMF dialling
Logic-level
0 = < (0.3 V)
Z = > (1 V) < (VMP – 1 V) or (open input)
1 = > (VMP – 0.3 V)
RECATT =
STI =
ES =
AFS =
AGA =
TXACL =
Receive attenuation
Input of sidetone balancing amplifier
External supply
Acoustical feedback supression control
Automatic gain adjustment
Transmit anticlipping control
18
Preliminary Information
Rev. A1: 24.01.1995