U4084B TEMIC [TEMIC Semiconductors], U4084B Datasheet - Page 7

• Manufacturer Part Number: U4084B
• Description: Low-Voltage, Voice-Switched Circuit for Hands-Free Operation
• Manufacturer: TEMIC [TEMIC Semiconductors]

TELEFUNKEN Semiconductors
Rev. A1, 31-Jan-97
Attenuator control
C
C
C
C
C
resistance
VCI input current
Dial tone detector
threshold
Microphone amplifier V
Output offset
Open loop gain
Gain bandwidth
Output high voltage
Output low voltage
Input bias current (MIC)
Muting (
MUTE input resistance
MUTE input high
MUTE input low
Distortion
Level detectors and background-noise monitors
Transmit receive switching
threshold
Source current
Sink current
CPR, CPT output
resistance
CPR, CPT leakage current
System distortion
R mode
T mode
T
T
T
T
T
voltage
source current
sink current
slow idle current
fast idle internal
Parameters
D
gain)
MUTE
Pin 14 – V
R mode, V
Idle mode
T mode
R mode
T mode
V
Feedback R = 180 k
f < 100 Hz
I
I
f = 1.0 kHz, V
300 Hz < f < 10 kHz
V
300 Hz < f < 10 kHz
Ratio of current
at RLI1 + RLI2 to 20
at TLI1 + TLI2 to switch
from T to R
at RLO1, RLO2, TLO1,
TLO2
at RLO1, RLO2, TLO1,
TLO2
I
From RI to RECO
From MIC to TO includes
T attenuator
O
O
O
MICO –
S =
< 0.8 V, G
= –1.0 mA, V
= +1.0 mA
= 1.2 mA
Test Conditions / Pins
V
Preliminary Information
MUTE
V
B
CI
B
,
= 6.5 V
VCL
= V
MUTE
S
B
= 5.0 V
= 31 dB
W
= 2.0 V
m
A
MICO
V
V
V
V
Symbol
G
GBW
R
THD
I
MUTEH
MUTEL
I
MICOH
I
I
V
MICOL
I
I
V
I
VOLM
R
CPLK
I
MUTE
R
I
CTR
CTT
CTS
LSO
LSK
VCI
d
BM
d
G
G
TH
CT
DT
CP
FI
R
T
M
vos
M
–85.0
–50.0
–55.0
Min.
40.0
10.0
70.0
50.0
1.5
3.7
2.0
0.0
0.8
–240.0
240.0
–60.0
–60.0
–40.0
–68.0
Typ.
60.0
15.0
80.0
90.0
0.15
–2.0
–0.2
150
0.0
0.0
2.0
0.0
1.0
1.0
4.0
0.5
0.8
U4084B
+50.0
–40.0
200.0
Max.
85.0
20.0
3.6
0.8
1.2
3.0
3.0
V
S
MHz
Unit
mV
mV
mV
mV
mA
m
m
m
k
k
m
m
nA
dB
nA
dB
dB
V
V
V
%
W
%
%
7 (26)
W
W
A
A
A
A
A