PBL38661-2 Просмотр технического описания (PDF) - Ericsson
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PBL38661-2 Datasheet PDF : 18 Pages
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PBL 386 61/2
Preliminary
Parameter
Ref
fig
Four-wire to longitudinal balance, BFLE
4
Two-wire return loss, r
TIPX idle voltage, VTi
RINGX idle voltage, VRi
VTR
Four-wire transmit port (VTX)
Overload level, ILDC ≥ 10 mA
5
On hook ILDC ≤ 5 mA
Output offset voltage, ∆VTX
Output impedance, zTX
Four-wire receive port (RSN)
Receive summing node (RSN) dc voltage
Receive summing node (RSN) impedance
Receive summing node (RSN)
current (IRSN) to metallic loop current (IL)
gain,αRSN
Frequency response
Two-wire to four-wire, g2-4
6
Conditions
active state
BFLE
=
20
•
Log
ERX
VLo
0.2 kHz < f < 3.4 kHz
r = 20 • Log |ZTR + ZL|
|ZTR - ZL|
0.2 kHz < f < 0.5 kHz
0.5 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz, Note 3
active, IL = 0
active, IL = 0
active, IL = 0
Load impedance > 20 kΩ,
1% THD, Note 4
0.2 kHz < f < 3.4 kHz
IRSN = 0 mA
0.2 kHz < f < 3.4 kHz
0.3 kHz < f < 3.4 kHz
relative to 0 dBm, 1.0 kHz. ERX = 0 V
0.3 kHz < f < 3.4 kHz
f = 8.0 kHz, 12 kHz, 16 kHz
Min
40
25
27
23
1.55
0.7
-60
-0.15
-0.5
Typ
Max
- 1.5
VBat+ 2.7
VBat +4.2
60
5
20
GND +25
10
50
400
0.15
-0.1
0
Unit
dB
dB
dB
dB
V
V
V
VPeak
VPeak
mV
Ω
mV
Ω
ratio
dB
dB
C
RLT
VLo
RLR
TIPX
VTX
VTR PBL 386 61/2
RT
E RX
RINGX RSN
RRX
Figure 4. Metallic to longitudinal and
four-wire to longitudinal balance
1
ωC
<<
150
Ω,
RLT
= RLR = RL
/2 =300Ω
RT = 120 kΩ, RRX = 120 kΩ
C
TIPX
VTX
Figure 5. Overload level, VTXO, four-wire
transmit port
RL
ILDC
PBL 386 61/2
RT
VTXO
1
ωC
<<
R,
L
R
L
=
600
Ω
EL
RINGX RSN
RT = 120 kΩ, RRX = 120 kΩ
RRX
4
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