参数资料
型号: PEF80902
厂商: INFINEON TECHNOLOGIES AG
英文描述: 4B3T Second Gen. Modular ISDN NT(Ordinary)
中文描述: 4B3T二将军模块化综合业务数字网新台币(普通)
文件页数: 61/83页
文件大小: 1168K
代理商: PEF80902
PEF 80902
Operational Description
Data Sheet
53
2001-11-12
S-Transformer Parameters
The following
Table 21
lists parameters of a typical S-transformer:
Table 21
S-Transformer Parameters
Transmitter
The
transmitter
requires external resistors R
stx
= 47
in order to adjust the output
voltage to the pulse mask (nominal 750 mV according to ITU I.430, to be tested with the
test mode
TM1
) on the one hand and in order to meet the output impedance of
minimum 20
on the other hand (to be tested with the testmode
Continuous Pulses
)
on the other hand.
Note: The resistance of the S-transformer must be taken into account when
dimensioning the external resistors
R
stx
. If the transmit path contains additional
components (e.g. a choke), then the resistance of these additional components
must be taken into account, too.
Transformer Parameters
Transformer ratio;
Device side : Line side
Main inductance of windings on the line side
Leakage inductance of windings on the line side L
S
Coupling capacitance between the windings on
the device side and the windings on the line side
DC resistance of the windings on device side
DC resistance of the windings on line side
Symbol Value
n
Unit
2 : 1
L
H
typ. 30
typ. <3
typ. <100
mH
μH
pF
C
K
R
B
R
L
typ. 2.4
typ. 1.4
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