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参数资料
| 型号： | W671320P |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 模拟传输电路 |
| 英文描述： | TELECOM-SLIC, PQCC28 |
| 封装： | PLASTIC, LCC-28 |
| 文件页数： | 8/48页 |
| 文件大小： | 1344K |
| 代理商： | W671320P |
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W671300 SERIES
ZO
ZL 2RP
–
=
(EQ. 20)
ZL is the line impedance and RP is the external protection resistor. RS is defined as:
RS
133.33 ZL 2RP
–
(
)
=
(EQ. 21)
7.1.7.2 Complex Impedance Synthesis
Substituting the impedance programming resistor, RS, with a complex programming network provides
complex impedance synthesis.
2-WIRE
NETWORK
R
1
R
2
C
2
PROGRAMMING
NETWORK
R
Series
R
Parallel
C
Parallel
FIGURE 5: COMPLEX PROGRAMMING NETWORK
The reference designators in the programming network match the evaluation board. The component
RS has a different design equation than the RS used for resistive impedance synthesis. The design
equations for each component are provided below.
RSeries
133.3
R1 2 RP
(
)
(
)
×
=
(EQ. 22)
RParallel
133.3 R2
×
=
(EQ. 23)
CParallel C2 133.3
=
(EQ. 24)
Node Equation at AUX input, Figure 4.
I
X
AUX
R
------------- +
VTX
R
-----------
=
(EQ. 25)
Substituting equation [17] for VTX with AUX =0 and IM= -V2W/ZL gives us equation [26]. Note: AUX
input is not used.
Substituting equation [17] into equation [21]
IX
V
TX
R
-----------
V
IN
R
---------
R
S
RIN
----------
–
V
2w30
ZL
------------------
–
R
S
R8k
-----------
=
(EQ. 26)
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