PBL38621-2 Datasheet, PDF (4/16 Pages) Ericsson – Subscriber Line Interface Circuit

PBL 386 21/2
Parameter
Ref
fig Conditions
Min
Four-wire to longitudinal balance, B_FLE
4 0.2 kHz < f < 4.0 kHz
40
B_FLE = 20 • Log
E_RX
V_Lo
Two-wire return loss, r
r = 20 • Log ^{|ZTR + ZL|}
|Z_TR - Z_L|
TIPX idle voltage, V_Ti
RINGX idle voltage, V_Ri
V_TR
Four-wire transmit port (VTX)
Overload level, V_TXO
5
On-hook, I_L < 5mA
Output offset voltage ∆V_TX
Output impedance, z_TX
Four-wire receive port (RSN)
Receive summing node (RSN) DC voltage
Receive summing node (RSN) impedance
Receive summing node (RSN)
current (I_RSN) to metallic loop current (I_L)
gain,α_RSN
Frequency response
Two-wire to four-wire, g_2-4
6
0.2 kHz < f < 1.0 kHz
1.0 kHz < f < 3.4 kHz, Note 3
active, I_L = 0 mA
active, I_L = 0 mA
active, I_L = 0 mA
Load impedance > 20 kΩ,
1% THD, Note 4
0.2 kHz < f < 3.4 kHz
I_RSN = -55 µA
0.2 kHz < f < 3.4 kHz
0.3 kHz < f < 3.4 kHz
27
20
1.0
1.0
-100
1.15
relative to 0 dBm, 1.0 kHz. E_RX = 0 V
0.3 kHz < f < 3.4 kHz
-0.20
f = 8.0 kHz, 12 kHz, 16 kHz
-1.0
Typ
Max
50
35
22
- 1.1
V_Bat +2.5
V_Bat +3.6
0
100
15
50
1.25
1.35
8
20
200
0.10
0.1
Unit
dB
dB
dB
V
V
V
V_Peak
V_Peak
mV
Ω
V
Ω
ratio
dB
dB
C
VLo
R_LT
R_LR
TIPX
VTX
V_{TR PBL 386 21/2}
R_T
E _RX
RINGX RSN
R_RX
Figure 4. Metallic to longitudinal and
four-wire to longitudinal balance
1
ωC
<<
150
Ω, R_LT
=R_LR
=R_L
/2 =300Ω
R
T
=
120
kΩ,
R
RX
=
60
kΩ
C
TIPX
VTX
Figure 5. Overload level, V_TXO, four-wire
transmit port
R_L
I_LDC
PBL 386 21/2
R_T
V_TXO
1
ωC
<<
R,
L
R
L
=
600
Ω
E_L
RINGX RSN
R_T = 120 kΩ, R_RX = 60 kΩ
R_RX
4