PBL 386 21/2
Electrical Characteristics
-40 °C ≤ TAmb ≤ +85 °C, PTG = open (see pin description), VCC = +5V ±5 %, VBat = -58V to -40V, VBat2 = -17V, RLC=38.3 kΩ,
IL = 22 mA. RL = 600 Ω, RF1= RF2= RP1= RP2=0, RRef = 49.9 kΩ, CHP = 47 nF, CLP=0.15 µF, RT = 120 kΩ, RSG = 0 kΩ, RRX = 60 kΩ,
RR = 52.3 kΩ ROV = ∞ unless otherwise specified. Current definition: current is positive if flowing into a pin.
Ref
Parameter
fig
Conditions
Min
Typ
Max
Unit
Two-wire port
Overload level, VTRO
2
Active state
1% THD
1.0
1.0
VPeak
VPeak
On-Hook, ILdc < 5mA
Note 1, ROV = ∞
Input impedance, ZTR
Longitudinal impedance, ZLOT, ZLOR
Longitudinal current limit, ILOT, ILOR
Note 2
0 < f < 100 Hz
active state
ZT/200
20
35
Ω/wire
10
mArms /wire
Longitudinal to metallic balance, BLM
IEEE standard 455-1985, ZTRX=736Ω
0.2 kHz < f < 1.0 kHz
53
53
dB
dB
dB
1.0 kHz < f < 3.4 kHz
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
Longitudinal to metallic balance, BLME
ELo
3
3
4
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
53
53
75
70
68
dB
dB
dB
BLME =20 • Log
VTR
Longitudinal to four-wire balance, BLFE
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
53
53
75
70
68
dB
dB
dB
ELo
VTX
BLFE = 20 • Log
Metallic to longitudinal balance, BMLE
VTR
0.2 kHz < f < 3.4 kHz
40
50
dB
BMLE = 20 •
; ERX = 0
Log
VLo
C
TIPX
VTX
Figure 2. Overload level, VTRO, two-wire
port
RL
VTRO
ILDC
RT
PBL 386 21/2
ERX
1
<< RL, RL= 600 Ω
ωC
RINGX
RSN
RRX
RT = 120 kΩ, RRX = 60 kΩ
VTX
TIPX
Figure 3. Longitudinal to metallic (BLME
)
and Longitudinal to four-wire (BLFE
balance
)
ELo
RLT
C
RT
VTR
PBL 386 21/2
VTX
1
ωC
RLR
<< 150 Ω, RLR =RLT =RL /2=300Ω
RINGX
RSN
RRX
RT = 120 kΩ, RRX = 60 kΩ
3
ERICSSON [ ERICSSON ]
