PBL 3762A/2, /4
Electrical Characteristics
-40
°C ≤
T
Amb
≤
85
°C,
Note 10, V
CC
= +5V
±5
%, V
EE
= -5V
±5%,
V
Bat
= -48V, AGND = BGND, R
SG
= 20kΩ (for PBL 3762A/4 R
SG
=
0Ω), R
DC1
= R
DC2
= 20 kΩ. Z
L
= 600
Ω,
C
HP
= 10 nF, C
DC
= 3.3
µF
unless otherwise specified. All pin number references in the text
and figures refer to the 22-pin DIP unless otherwise specified.
Parameter
Ref
fig
Conditions
Min
Typ
Max
Unit
Two-wire port
Overload level, V
TRO
Input impedance, Z
TR
Longitudinal impedance, Z
LoT
, Z
LoR
Longitudinal current limit, I
LoT
, I
LoR
Longitudinal to metallic balance, B
LM
2
Z
L
= 600
Ω,
1% THD, Note 1
Note 2
0 < f < 100 Hz
active state
stand-by state
IEEE standard 455-1985
0.2 kHz
≤
f
≤
3.4 kHz
0°C
≤
T
Amb
≤
70°C
-40°C
≤
T
Amb
≤
85°C
0.2 kHz
≤
f
≤
3.4 kHz
E
Lo
B
LFE
= 20 • Log
V
TR
0°C
≤
T
Amb
≤
70°C
-40°C
≤
T
Amb
≤
85°C
0.2 kHz
≤
f
≤
3.4 kHz
E
Lo
B
LFE
= 20 • Log
V
TX
0°C
≤
T
Amb
≤
70°C
-40°C
≤
T
Amb
≤
85°C
0.2 kHz
≤
f
≤
3.4 kHz
E
B
MLE
= 20 • Log
TR
,E
RX
= 0
V
Lo
0.2 kHz
≤
f
≤
4.0 kHz
E
B
FLE
= 20 • Log
RX
V
Lo
E
TR
source removed
3.1
10
27
8,5
35
V
Peak
Ω/wire
mA
rms
/wire
mA
rms/
wire
63
55
70
70
dB
dB
Longitudinal to metallic balance, B
LME
3
63
55
70
70
dB
dB
Longitudinal to four-wire balance, B
LFE
3
63
55
50
70
70
55
dB
dB
dB
Metallic to longitudinal balance, B
MLE
4
Four-wire to longitudinal balance, B
FLE
4
50
55
dB
Figure 2. Overload level, V
TRO
, two-wire
port.
1
<< R
L
, R
L
= 600
Ω
ωC
R
T
= 600 kΩ, R
RX
= 300 kΩ
R
L
V
TRO
C
TIPX
5
VTX
21
I
Ldc
PBL 3762A/2
RINGX
6
RSN
19
R
T
E
RX
R
RX
Figure 3. Longitudinal to metallic (B
LME
)
and Longitudinal to four-wire (B
LFE
)
balance.
1
<< 150
Ω,
R
LR
= R
LT
= 300
Ω
ωC
R
T
= 600 kΩ, R
RX
= 300 kΩ
C
V
L
O
R
LT
E
TR
R
LR
TIPX
5
VTX
21
PBL 3762A/2
RINGX
6
RSN
19
R
T
E
RX
R
RX
3
ERICSSON [ ERICSSON ]
