PBL386212QNT Просмотр технического описания (PDF) - Ericsson
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PBL386212QNT Datasheet PDF : 16 Pages
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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
Two-wire port
fig Conditions
Min
Typ
Max
Unit
Overload level, VTRO
2 Active state
1% THD
1.0
On-Hook, ILdc < 5mA
Note 1, ROV = ∞
1.0
VPeak
VPeak
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
dB
1.0 kHz < f < 3.4 kHz
53
dB
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
dB
Longitudinal to metallic balance, BLME
3
0.2 kHz < f < 1.0 kHz
53
75
dB
BLME =20 • Log ELo
VTR
1.0 kHz < f < 3.4 kHz
53
70
dB
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
68
dB
Longitudinal to four-wire balance, BLFE
3
0.2 kHz < f < 1.0 kHz
53
75
dB
BLFE = 20 • Log
ELo
VTX
1.0 kHz < f < 3.4 kHz
53
70
dB
Reverse polarity 0.2 kHz < f < 3.4 kHz 53
68
dB
Metallic to longitudinal balance, BMLE
BMLE = 20 • Log
VTR
VLo
;
ERX
=
0
4 0.2 kHz < f < 3.4 kHz
40
50
dB
C
TIPX
VTX
Figure 2. Overload level, VTRO, two-wire
port
RL
VTRO
ILDC
PBL 386 21/2
RT
E RX
1
ωC
<<
RL,
RL=
600
Ω
RINGX RSN
RRX
R
T
=
120
kΩ,
R
RX
=
60
kΩ
Figure 3. Longitudinal to metallic (BLME)
and Longitudinal to four-wire (BLFE)
balance
1
ωC
<< 150 Ω, RLR =RLT =RL /2=300Ω
RT = 120 kΩ, RRX = 60 kΩ
ELo C
TIPX
VTX
RLT
VTR PBL 386 21/2
RLR
RINGX
RSN
RT
V TX
RRX
3
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