PBL 386 50/2
Electrical Characteristics
0 °C ≤ TAmb ≤ +70 °C, PTG = Open (see pin description), ROV = ∞, VCC= +5V ±5 %, VBat= -58V to -40V, VBat2 = -32V, RLC=32.4 kΩ, IL
= 27 mA. RL = 600 Ω, RF1= RF2= RP1= RP2=0, RRef = 49.9 kΩ, CHP = 47 nF, CLP=0.15 µF, RT = 60 kΩ, RSG = 0 kΩ, RRX = 60 kΩ, RR =
11 kΩ unless otherwise specified. Current definition: current is positive if flowing into a pin.
Ref
Parameter
fig
Conditions
Min
Typ
Max
Unit
Two-wire port
Overhead voltage, VTRO ,ILdc > 18mA
2
Active state, ROV = ∞
0.2 kHz < f < 3.4 kHz
1% THD, Note 1
f≤16kHz, ZLAC =200Ω, Adj. by ROV
Note 2
0 < f < 100 Hz
active state
Normal polarity:
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
Reverse polarity:
0.2 kHz < f < 3.4 kHz
2.7
1.1
VPeak
On-Hook, ILdc < 5mA
Over load level, metering
Input impedance, ZTR
Longitudinal impedance, ZLOT, ZLOR
Longitudinal current limit, ILOT, ILOR
Longitudinal to metallic balance, BLM
(IEEE standard 455-1985, ZTRX=736Ω)
Longitudinal to metallic balance, BLME
ELo
VPeak
VPeak
5.0
35
ZT/200
20
Ω/wire
mArms /wire
18
55
55
dB
dB
3
3
BLME = 20 · Log
55
dB
VTR
Longitudinal to four-wire balance, BLFE
Normal polarity:
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
Reverse polarity:
61
61
75
70
dB
dB
ELo
BLFE = 20 · Log
VTX
0.2 kHz < f < 3.4 kHz
0.2 kHz < f < 3.4 kHz
61
40
68
50
dB
dB
Metallic to longitudinal balance, BMLE
VTR
4
BMLE = 20 · Log
; ERX = 0
VLo
C
TIPX
VTX
Figure 2. Overhead voltage, VTRO, two-
wire port
RL
VTRO
ILDC
RT
PBL 386 50/2
ERX
RINGX
RSN
1
<< RL, RL= 600 Ω
ωC
RRX
RT = 60 kΩ, RRX = 60 kΩ
VTX
TIPX
ELo
RLT
C
Figure 3. Longitudinal to metallic (BLME
)
RT
VTR
PBL 386 50/2
VTX
and Longitudinal to four-wire (BLFE
)
balance
RLR
1
RINGX
RSN
<< 150 Ω, RLR =RLT =RL /2=300Ω
ωC
RRX
RT = 60 kΩ, RRX = 60 kΩ
3
ERICSSON [ ERICSSON ]
