PBL 3764A/4, /6
Electrical Characteristics
-40 °C ≤ TAmb ≤ 85 °C, Note 10, VCC = +5V ±5 %, VEE = -5V ±5%, VBat = -48V, AGND = BGND, RDC1=RDC2 =41.7kΩ, CHP=10nF,
DC = 1.5 µF, ZL =600Ω unless otherwise specified. All pin number references in the text and figures refer to the 22-pin DIP unless
C
otherwise indicated.
Ref
fig
Parameter
Conditions
Min
Typ
Max
Unit
Two-wire port
Overload level, VTRO
Input impedance, ZTR
2
ZL = 600 Ω, 1% THD Note 1
Note 2
3.1
VPeak
Longitudinal impedance, ZLoT, ZLoR
Longitudinal current limit, ILoT, ILoR
0 < f < 100 Hz
active state
stand-by state
10
35
Ω/wire
mArms/wire
mArms/wire
27
8.5
Longitudinal to metallic balance, BLM
Longitudinal to metallic balance, BLME
IEEE standard 455-1985
0.2 kHz ≤ f ≤ 3.4 kHz
0 °C ≤ TAmb ≤ 70 °C
-40 °C ≤ TAmb ≤ 85 °C
63
58
70
70
dB
dB
3
3
0.2 kHz ≤ f ≤ 3.4 kHz
ELo
BLME = 20 • Log
VTR
0 °C ≤ TAmb ≤ 70 °C
-40 °C ≤ TAmb ≤ 85 °C
63
58
70
70
dB
dB
Longitudinal to four-wire balance, BLFE
0.2 kHz ≤ f ≤ 3.4 kHz
ELo
BLFE = 20 • Log
VTX
0 °C ≤ TAmb ≤ 70 °C
-40 °C ≤ TAmb ≤ 85 °C
63
58
70
70
dB
dB
Metallic to longitudinal balance, BMLE
4
0.2 kHz < f < 3.4 kHz
ETR
50
55
dB
BMLE = 20 • Log
,ERX = 0
VLo
C
TIPX
5
VTX
21
Figure 2. Overload level, VTRO, two-wire
port
R
V
R
I
L
TRO
PBL 3764A/4
T
Ldc
E
RX
1
RINGX
6
RSN
19
<< RL, RL= 600 Ω
ωC
R
RX
RT = 600 kΩ, RRX = 300 kΩ
TIPX
5
VTX
21
Figure 3. Longitudinal to metallic (BLME
)
E
R
R
LO
LT
and Longitudinal to four-wire (BLFE
balance
)
C
V
V
R
T
TX
TR
PBL 3764A/4
LR
1
RINGX
6
RSN
19
<< 150 Ω, RLT = RLR = 300 Ω
ωC
R
RX
RT = 600 kΩ, RRX = 300 kΩ
3
ERICSSON [ ERICSSON ]
