PBL38611-2 Просмотр технического описания (PDF) - Ericsson
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PBL38611-2 Datasheet PDF : 18 Pages
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PBL 386 11/2
Electrical Characteristics
0 °C ≤ TAmb ≤ +70 °C, VCC = +5V ±5 %, VEE = -5V ± 5%, VBat = -58V to -40V, RLC=18.7kΩ, (IL = 27 mA), ZL = 600 Ω, RLD = 50 kΩ,
RF1, RF2 = 0 Ω, RRef = 15kΩ, CHP = 68nF, CLP=0.33 µF, RT = 120 kΩ, RSG = 24 kΩ, RRX = 120 kΩ, AOV and VBat2 -pin not connected,
unless otherwise specified. Current definition: current is positive if flowing into a pin. Active state includes active normal and active
reverse states unless otherwise specified.
Parameter
Two-wire port
Overload level, VTRO
Off-Hook, ILDC ≥ 10 mA
On-Hook, ILDC ≤ 5 mA
Metering ILDC ≥ 10 mA
Input impedance, ZTR
Longitudinal impedance, ZLoT, ZLoR
Longitudinal current limit, ILoT, ILoR
Longitudinal to metallic balance, BLM
Ref
fig
Conditions
Min
2
Active state
1% THD, Note 1
2.5
1.4
ZLM = 200 Ω, f = 16 kHz
Note 2
0 < f < 100 Hz
active state
12
IEEE standard 455-1985, ZTRX = 736 Ω
0.2 kHz < f < 1.0 kHz
53
1.0 kHz < f < 3.4 kHz
53
Typ
Max
Unit
2.3
ZT/200
20
35
VPeak
VPeak
VPeak
Ω/wire
mArms /wire
70
dB
70
dB
Longitudinal to metallic balance, BLME
3
active state
BLME = 20 • Log ELo
0.2 kHz ≤ f ≤ 1.0 kHz
53
70
dB
VTR
1.0 kHz < f < 3.4 kHz
53
70
dB
Longitudinal to four-wire balance, BLFE
3
active state
BLFE = 20 • Log ELo
0.2 kHz ≤ f ≤ 1.0 kHz
59
70
dB
VTX
1.0 kHz < f < 3.4 kHz
59
70
dB
Metallic to longitudinal balance, BMLE
4
active state
BMLE = 20 • Log VTR
VLo
;ERX = 0
0.2 kHz < f < 3.4 kHz
40
58
dB
C
TIPX
VTX
Figure 2. Overload level, VTRO, two-wire
port
1
ωC
<<
RL,
RL=
600
Ω
RL
VTRO
ILDC
PBL 386 11/2
RT
E RX
RINGX RSN
RRX
R
T
=
120
kΩ,
R
RX
=
120
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 = 120 kΩ
ELo C
TIPX
VTX
RLT
VTR PBL 386 11/2
RLR
RINGX
RSN
RT
V TX
RRX
3
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