PBL 386 20/2
Electrical Characteristics
0
°C ≤
T
Amb
≤
+70
°C,
PTG = open (see pin description), V
CC
= +5V
±5
%, V
Bat
= -58V to -40V, V
BAT2
= -17V, R
LC
=38.3 kΩ, I
L
= 22 mA.
R
L
= 600
Ω,
R
F1
= R
F2
=R
P1
= R
P2
=0
Ω,
R
Ref
= 49.9 kΩ, C
HP
= 47 nF, C
LP
=0.15
µF,
R
T
= 120 kΩ, R
SG
= 0 kΩ, R
RX
= 60 kΩ, R
R
= 52.3 kΩ,
R
OV
=∞ unless otherwise specified. Current definition: current is positive if flowing into a pin.
Parameter
Ref
fig
Conditions
Min
Typ
Max
Unit
Two-wire port
Overload level, V
TRO
On-Hook, I
Ldc
< 5mA
Input impedance, Z
TR
Longitudinal impedance, Z
LOT
, Z
LOR
Longitudinal current limit, I
LOT
, I
LOR
Longitudinal to metallic balance, B
LM
2
Active state
1% THD, R
OV
=
∞
Note 1
Note 2
0 < f < 100 Hz
active state
IEEE standard 455-1984
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
3
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
4
0.2 kHz < f < 3.4 kHz
53
53
40
75
70
50
dB
dB
dB
1.0
1.0
Z
T
/200
20
10
53
53
53
53
75
70
35
V
Peak
V
Peak
Ω/wire
mA
rms
/wire
dB
dB
dB
dB
Longitudinal to metallic balance, B
LME
B
LME
= 20 · Log
E
Lo
V
TR
3
Longitudinal to four-wire balance, B
LFE
E
Lo
B
LFE
= 20 · Log
V
TX
Metallic to longitudinal balance, B
MLE
V
B
MLE
= 20 · Log
TR
; E
RX
= 0
V
Lo
C
TIPX
VTX
Figure 2. Overload level, V
TRO
, two-wire
port
R
L
V
TRO
I
LDC
PBL 386 20/2
RINGX
RSN
R
T
1
<< R
L
, R
L
= 600
Ω
ωC
R
T
= 120 kΩ, R
RX
= 60 kΩ
E
RX
R
RX
Figure 3. Longitudinal to metallic (B
LME
)
and Longitudinal to four-wire (B
LFE
) bal-
ance
1
<< 150
Ω,
R
LR
=R
LT
=R
L
/2=300Ω
ωC
R
T
= 120 kΩ, R
RX
= 60 kΩ
TIPX
E
Lo
C
R
LT
V
TR
R
LR
RINGX
VTX
PBL 386 20/2
RSN
R
T
V
TX
R
RX
3
ERICSSON [ ERICSSON ]
