PBL 386 21/2
Electrical Characteristics
-40
°C ≤
T
Amb
≤
+85
°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, 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
Note 1, R
OV
=
∞
Note 2
0 < f < 100 Hz
active state
1.0
1.0
Z
T
/200
20
10
35
V
Peak
V
Peak
Ω/wire
mA
rms
/wire
dB
dB
dB
75
70
68
75
70
68
50
dB
dB
dB
dB
dB
dB
dB
IEEE standard 455-1985, Z
TRX
=736Ω
0.2 kHz < f < 1.0 kHz
53
1.0 kHz < f < 3.4 kHz
53
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
3
0.2 kHz < f < 1.0 kHz
53
1.0 kHz < f < 3.4 kHz
53
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
3
0.2 kHz < f < 1.0 kHz
53
1.0 kHz < f < 3.4 kHz
53
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
4
0.2 kHz < f < 3.4 kHz
40
Longitudinal to metallic balance, B
LME
B
LME
=20 • Log E
Lo
V
TR
Longitudinal to four-wire balance, B
LFE
B
LFE
= 20 • Log E
Lo
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
1
<< R
L
, R
L
= 600
Ω
ωC
R
T
= 120 kΩ, R
RX
= 60 kΩ
R
L
V
TRO
I
LDC
PBL 386 21/2
RINGX
RSN
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
=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 21/2
RSN
R
T
V
TX
R
RX
3
ERICSSON [ ERICSSON ]
